Answer: (a) If the organism can be divided exactly into two halves from one median plane only, the symmetry is called bilateral symmetry, example liver fluke. (b) The animals are called as flatworms and are either free living or parasitic. Protozoans are unicellular, eukaryotes so they have been kept in the Kingdom Protista comprising of only the unicellular, eukaryotic organisms. Answer: Three types of plant specimen were observed by Renu and labelled as A, B and C. The specimen A had green colour with undifferentiated thalloid body, B had well differentiated body which formed spores and had a vascular system and the specimen C had cones which had seeds but no fruits were formed in them. (c) What are the characteristic features of the group to which they belong? The groups are diploblastic and triploblastic. Name the phylum to which centipede and prawn belong. Answer: Example:Gnetum. Classify the following based on number of chambers in their heart. What are the steps in building a hierarchy of classification? What do you understand by the term naked embryo? Spores are formed in them instead of seeds. Answer: What defines a gymnosperm what defines an angiosperm? Question 11. For example, Cockroach, spider, butterfly, etc. (a) Outermost layer of the cell Circinate vernation is the manner in which a fern frond emerges. Question 19. (i) Cell structure: On the basis of this the two groups are prokaryotes and the eukaryotes which are distinguished on the basis of absence or presence of well defined nuclear membrane. Answer: Question 8. Question 2. Flying lizard belongs to the group reptiles and is characterised as cold-blooded, body covered with scales and have three-chambered heart, while birds belong to group aves and are characterised as warmblooded, having feather covered body, forelimbs modified as wings and having four-chambered heart. Hence, angiosperms are considered better than gymnosperms. Write the difference between Gymnosperms and Angiosperms giving example of each type. Q. How ? Phylum Platyhelminthes. Bryophytes Crocodile, Question 31. Define the following: (a) Radial symmetry (b) Bilateral symmetry (ii) Nematoda and Annelida Three types of animal specimen were collected by Rajeev and labelled as A, B and C. The specimen A had slimy skin, respired through lungs, B had dry scales with eggs having tough covering and the specimen C had moist scales with terminal mouth. Draw the diagram. (b) Annelids and Nematodes The four main divisions of gymnosperms are Coniferophyta, Cycadophyta, Ginkgophyta, and Gnetophyta. Answer: Food is stored in the form of glycogen in them instead of starch as stored in plants. Spores are formed in capsule of sporophyte. The five kingdoms proposed by R. H. Whittaker comprises of Monera, Protista, Fungi, Plantae and Animalia. Identify the divisions to which they belong and write the major characteristic of each division. Question 1. Classify them whether they are monocot or dicot. (a) True () Single celled, eukaryotic and photosynthetic (b) Cockroach and Octopus have open circulatory system. they have vascular structures like xylem and phloem. (d) True How can we say that classification of organisms is closely related to their evolution? Nematodes Have pseudocoelom. They are solitary like Hydra and can be colonial like Obelia. Gymnosperms are cone bearing plants with vascular tissue and Bryophytes are not con bearing plants, and don't have vascular tissue. The three germ layers are ectoderm, mesoderm and endoderm. Give two examples. For example, Cycas, Pinus, etc. Characteristic features of angiosperms are: Question 14. (a) False (i) Spirogyra When printed, the scientific name is given in italics. Question 25. Question 20. Gymnosperm have lost of anthredia and it's role of fillingpollen grain. It contains chloroplast and can perform photosynthesis and behaves as autotroph in the presence of sunlight. Answer: Select the odd one out with respect to classification. Presence or absences of cell wall Plant cells have cell wall whereas animal cells do not have a cell wall. Answer: Answer: They are cryptogams, seedless and vascular: Pteridophytes are seedless, and they reproduce through spores. (b) Write the name of the class to which following belong: The connecting link between pteridophytes and angiosperms, that do not bear flowers and produces naked seeds are placed under which group? Who gave it? State the phylum to which liver fluke and Planaria belong. Question 26. of chromosomes in gymnosperm is 12, what will be the no. (b) Without specialized vascular tissue Question 2. (b) Phanerogams comprising of Algae, Bryophytes and Pteridophytes. The first plants to colonize land were most likely closely related to modern-day mosses (bryophytes) and are thought to have appeared about 500 million years ago. Question 10. (i) Thallophyta and Bryophyta All are eukaryotic. What is the biggest difference between gymnosperms and angiosperms? What are the economic importance of gymnosperms and angiosperms? The key difference between angiosperms and gymnosperms is how their seeds are developed. Yeast. (iii) Amphibians and Reptiles Answer: Because bryophytes lacs vascular tissues. Also give reason for your choice: prawn, scorpion, octopus, butterfly. On the other hand, the gymnosperms are more advanced than pteridophytes in many features like not depending on water for fertilisation, seed habit, etc. (b) How do these blue-green algae increase soil fertility? (a) The features present in all chordates are: (b) If the body cavity of an organism is not lined by mesoderm and the space is filled with vacuolated cells, then the body cavity called pseudocoelom. (b) The odd one out in this case is Octopus as it belongs to phylum Mollusca while others are the members of phylum Echinodermata. What are gymnosperms? Name the two classes of angiosperms with one example of each. How Toppers prepare for NEET Exam, With help of the best NEET teachers & toppers, We have prepared a guide for student who are Body covered with feathers, are warm-blooded with four-chambered heart, (b) Sea-horse: Class Pisces; Answer: Get Instant Access to 1000+ FREE Docs, Videos & Tests. (d) All have skin covered with hair and with sweat and oil glands. The tracheophytes include ferns, gymnosperms and angiosperms, and are characterized by specialized vascular tissues- the phloem and xylem. Do you know? Wheat monocot (d) Phanerogams What are angiosperms and gymnosperms plants? Give two examples of each: As the fern frond is formed, it is tightly curled so that the tender growing tip of the frond is protected within a coil. Explanation: Gymnosperms are non-flowering, seed-bearing plants. List three groups of plants and tell which plants are referred to as vascular plants? Give one example of each division. (d) Dark coloured and dot-like structure generally present in the centre of the cell Nucleus. They are usually aquatic but some of them are parasitic. Answer: Answer: (h) lichens, Question 37. Body cavity is pseudocoelom and symmetry is bilateral symmetry. Angiosperm derives from the Greek words for "vessel" and "seed." Rhizoids are of two types in bryophytes, whereas they are of only one kind in pteridophytes. Answer: Answer: Haploid chromosome is the characteristic feature of haploid. They are the first plant group with vascular tissue for the conduction of water and food materials and hence they are called as Vascular Cryptogams. Question 12. Draw a neat diagram of Spirogyra and label the following parts: Root of gymnosperm is a diploid cell which thus has 2n equals 24 chromosomes. Biology questions and answers. Answer: Question 7. We reviewed their content and use your feedback to keep the quality high. Which of the following order of gymnosperms is totally become extinct: Coulter and Chamberlain (1910) divided the gymnosperms into seven orders. Why the gymnosperms are said to be better adapted? (a) Protista: Euglena Often they are housed in somewhat open structures called cones. Give reasons. Answer: The members of the kingdom Protista have the following features: Question 10. The four distinguishing features of phylum Coelenterata are: Question 8. (e) Compound leaves are found in many ferns. What is the life cycle of the gymnosperm? Answer: Question 35. (b) Non flowering plants are called Cryptogamae. Rewrite the scientific name as per the convention. This is an Expert-Verified Answer Gymnosperms have an advanced root foundation and are made up of vascular tissues, whereas pteridophytes are divided into root systems, stalks, and leaflets. Match items of column (A) with items of column (B). Name the group which is called as Amphibian of the plant kingdom. Answer: Secondly, fer. (c) Phanerogams have well differentiated reproductive tissues which result in formation of seed. Write appropriate terms for the following. The amphibians are more advanced than the Pisces as. Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones, or solitary as in Yew, Torreya, Ginkgo. Main differences between pteridophytes and gymnosperms are that in pteridophytes secondary growth is absent but in gymnosperms it is present. Thallophyta, bryophyta and pteridophyta are called as Cryptogams. Answer: The phylum Echinodermata has organisms which have. What are the two peculiar features of phylum Echinodermata? On the basis of this identify the organism and the phylum to which it may belong to. Give any two of its significance. (c) Why do gymnosperms not require water for fertilisation? Answer: Question 36. Answer: Answer: Megaspores made in cones develop into the female gametophytes inside the ovules of gymnosperms, while pollen grains develop from cones that produce microspores. Answer: When written by hand, the genus name and the species name have to be underlined separately. They are advanced members of kingdom Plantae. As a result of the EUs General Data Protection Regulation (GDPR). Question 11. Give one point of difference between gymnosperms and angiosperms. Classify the following in their respective phylum/class: Jellyfish, earthworm, cockroach, rat Answer: 2 Why are angiosperms so abundant? (i) Fish: Class Pisces; Aquatic, respiration with gills, moist scales present on the body, two-chambered heart, cold-blooded, (ii) Frog: Class Amphibia; Can live both on land and in water, cold-blooded, three-chambered heart, slimy to touch, (iii) Lizard: Class Reptilia; Cold-blooded, three-chambered heart, hard covering present on eggs to prevent from desiccation, (iv) Pigeon: Class Aves; Forelimbs modified into wings for flight and have feathers, have beak, warm-blooded, four-chambered heart. These spores will undergo germination to give rise to haploid gametophytes. Gymnosperm derives from the Greek words for "naked seeds." Pick the odd one out and justify your choice by giving reasons: Write one point of difference between the following: Fill in the boxes given in figure with appropriate characteristics/plant groups. (b) Coelom Answer: WebPlant Classification. Question 3. Which structure is unique only to angiosperms? Question 25. Ferns 1What features of the this group is more complex or advanced compared to Bryophytes and , how are they less advanced the Gymnosperms and Angiosperms? (b) Maize is a monocot plant as it bears one cotyledon in its seed whereas pea is a dicot as it has two cotyledons in its seed. MCQs on Histology Phylum : Mollusca (b) Periplaneta Americana (ii) Fungi (c) Bryophytes have conducting tissue. example Amoeba, Plasmodium. Extra Questions for Class 9 Science Chapter 7 Diversity in Living Organisms with Answers Solutions. The dominant phase or the main plant body is sporophyte (diploid). Because the seeds are not enclosed in an ovary or fruit, gymnosperms are generally regarded as bearing 'naked' seeds. Bryophyta: Question 4. The names dont really convey any information about what they both refer to, at least for most people. For example, Agaricus (Mushroom), Rhizopus (Bread mould), Yeast etc. Question 13. Gymnosperm: Question 20. Fill in the blanks: (a) Lichens Seeds develop from the ovules that are found in the developed ovaries but in the case of gymnosperms, the ovules are located directly on the surface of the flower or cone. Bat, rat and cat belong to the class Mammalia and have following common features: The seeds are locally called and marketed as "chilgoza", "neja" (singular) or "neje" (plural). Which group of organisms are called as the Amphibians of plant kingdom*? (b) Filarial worms Answer: Dicots are the plants which bear two cotyledons in their seeds. Identify their group and give one example of each. Answer: What are the uses of gymnosperms and angiosperms to humans? (b) Centipede, prawn, scorpion Answer: It is symbiotic association between fungi and algae. (ii) Gymnosperms: have naked seeds (ii) In which mode of nutrition is saprophytic. Bryophytes (a) Bilateral symmetry Answer: The phanerogams are the plants which produce seeds and have a well differentiated body with true roots, stem and leaves. (g) Have seeds Thallophyta with two cotyledons Question 10. (c) Mutually benefitted relationship between two organisms. Which group among the Amphibia and Pisces is more advanced and why? WebTechnically, gymnosperms are robust and can survive in a variety of habitats. Question 28. (b) Write one difference between pseudocoelom and true coelom. Why gymnosperms is considered more advanced if compared to pteridophytes? () Gymnosperms differ from Angiosperms in having covered seed. What advantage did gymnosperms have over primitive types of plants? Which organism is more complex and evolved among Bacteria, Mushroom and Mango tree? Which of the following remained unchanged for last many million years: Which of the following is commonly known as "Chilgoza pine": If the haploid no. As a consequence, the spermatophytes were sometimes called siphonogams. (c) Open circulatory system is found in _______ where coelomic cavity is filled with blood. (a) Liver Fluke (a) Thallophyta (b) Centipede, prawn, scorpion belong to phylum Arthropoda. What is the reproductive system of a gymnosperm? (b) species Which group of plants is exclusively arborescent (woody)? For example: Yeast, Rhizopus, Agaricus, Penicillium, etc. What is the importance of scientific name? Answer: Which is the lowermost category in the hierarchy of classification? Carolus Linnaeus. Question 2. (b) Name the group: Answer: By the end of the Paleozoic, a new group of plants was challenging Answer: (e) Fungi do not contain _______ (d) True (f) (iv). Gymnosperms Question 24. (i) Sea-horse Answer: Answer: Endosperm is formed before fertilization and is always haploid. A Lycophytes and pterophytes are seedless vascular plants B. Coelomic cavity of arthropods is filled with blood. Define the terms and give one example of each Give two examples. They are called the amphibians of the plant kingdom. (a) Animals which are able to maintain a certain body temperature over a wide range of temperature in the environment. Why were fungi and bacteria considered as plants even though they do not have chlorophyll? 6. than gymnosperms (b) Describe the feature that divides the angiosperms into two groups. Eggs have a tough covering to protect from drying. They have jointed legs, bilateral symmetry and a body cavity filled with fluid. Answer: 2Finally, explain the significance of Give the three characteristic features of Class Mammalia. Answer: Question 5. Can be woody, non-woody annual, biennial or perennials. (f) True, Question 27. The angiosperms are the flowering plants. Species. Answer: Answer: Question 14. (b) The feature that divides the angiosperms into two groups is the number of cotyledons present in their embryo. Pteridophyta is divide into four classes. (ii) Body spiny and radial symmetry The sporangia produce haploid spores through meiosis. For example, the classification of organisms into two broad categories prokaryotes and eukaryotes forms the basis of further characteristics on which their classification is based. What type of symmetry do they have? Gymnosperms and Angiosperms are called as phanerogams. (c) False They remain within sporangia retained on sporophytes. (g) yeast Reproductive organs form cones or strobilus except female organs of Cycas. (e) Species Triploblastic, coelomate with organ system level of organisation. The relationships between ginkgos and other groups of plants are not fully resolved. Gymnosperms are often found in temperate forest and boreal forest biomes. Or (b) True For example, Ferns and horsetail are pteridophytes. 2003-2023 Chegg Inc. All rights reserved. The gymnosperm resembles with angiosperm in having: The non-encased condition of their seeds stands in contrast to the seeds and ovules of flowering plants (angiosperms), which are enclosed within an ovary. a. King cobra: Class Reptilia. He saw a black coloured organism with metamerically segmented body was clinging to his foot and trying to suck blood from his foot. (i) Which includes unicellular eukaryotic organisms Question 5. How do gymnosperms and differ from each other? Question 1. The saprophytes feed on dead and decaying organic matter. Answer: Question 13. Gymnosperm Vessels and companion cells are found in: Which one has the maximum power of adaptation? Only a few gymnosperms, like cycads thrive in warm whether. (b) Caudal fin Question 27. Answer: Sources . Give two differences between bony fish and cartilaginous fish. Monera. Bryophytes are most primitive land plants predominantly grow in moist and shaded places.Bryophytes are known as the Amphibians of Plant Kingdom since water is essential for the completion of their life cycle.The Bryophytes includes three groups of plants such as Liverworts, Hornworts and Mosses. Amphibians have a three-chambered heart compared to the two-chambered heart present in the Pisces. Answer: Which of the following plants produces seeds but not flowers? Why gymnosperms are better adapted to terrestrial life than ferns? Presence of () Five kingdom classification of living organisms is given by _______ (ii) King cobra Why are they called so? They live in moist, damp places in order to get water from soil either directly or with the help of their rhizoids. Unlike bryophytes and pteridophytes, in gymnosperms the male and the female gametophytes do not have an independent free-living existence. WebSummary. Gymnosperm plants lack: A. Answer: Question 3. Gymnosperms are heterosporous seed plants that produce naked seeds. WebIntroduction. Identify the class to which the specimens belong. (ii) Label mesoglea and gastro-vascular cavity. Answer: Question 15. Triassic Period: Tectonics and Gymnosperms are woody plants that produce seeds, but, unlike the flowering plants (angiosperms), the seeds are not enclosed inside an ovary. B: Reptilia When only one plane can divide the body of the organism into identical right and left halves, the symmetry is called as bilateral symmetry, example annelids, arthropods and humans. Question 2. Answer: The seeds of gymnosperms are naked whereas the seeds of angiosperms are enclosed within a fruit. (d) Paramecium is a Protista because it is an _______ The characteristic identifying feature of Scolopendra, prawn and scorpion are the jointed legs and open circulating system due to which they are placed in phylum Arthropoda. (a) Robert Whittaker 1What features of the this group is more complex or advanced Gymnosperms They are non-chlorophyllous and heterotrophic. Will you classify them in one group? Gymnosperm - Evolution and paleobotany Frog, Salamander, Flying lizard, King Cobra: 3 chambered, Crocodile, Ostrich, Pigeon, Bat, Whale: 4 chambered, Cold-blooded: Rohu, Scolidon, Flying lizard, King Cobra, Frog, Salamander Crocodile, Warm-blooded: Ostrich, Pigeon, Bat, Whale, Kingdom: The highest category of classification, Phylum (for animals) / Division (for plants): Group of related classes. Fruits. Examples: Wheat, Maize, Have reticulate venation. (a) Bilateral, dorsiventral symmetry is found in _______ Gymnosperms are vascular, cone-producing plants that produce seeds, while bryophytes are seedless, non-vascular, and produce no cones. (b) Worms causing the disease elephantiasis is _______ () Platyhelminthes are called so. Nematoda, Question 12. They require water for the transfer of their gametes and are dependent on water for sexual reproduction. Cycas is a group of gymnosperms which have top shaped multiciliated male gametes (largest male gamete) and the each mature seed of these plants contain one embryo and two cotyledons (dicotyledonous). Question 20. Male gametes are ciliate in pteridophytes while they are absent in gymnosperms, they have seeds or ovules. Diversity in Living Organisms Class 9 Extra Questions What are the most economically important divisions of gymnosperms? (d) Nematodes. Body segments are lined up one after the other from head to tail. (a) B. Their body has sweat glands and oil glands. The significant difference between bryophytes pteridophytes gymnosperms and angiosperms is the seed-bearing capacity. What these two groups are, and the differences between them, will be explained. Why gymnosperms are said to be better adapted to terrestrial life than ferns? (c) Arthropods Question 22. (b) chitin (c) Jelly-like substance in the cell where all organelles are suspended. (a) Bilateral symmetry Body can be divided into two exact halves from one plane only. Answer: (a) Cyanobacteria (b) Cryptogams Explanation: In pteridophytes both microspores and megaspores are released from their respective sporangia, whereas in gymnosperms, megaspore is permanently retained.Jul 28, 2021. Spores are produced inside the sporangia borne on leaves or cones. Why gymnosperm is an advanced group than pteridophytes? Additionally, all but the most ancient angiosperms contain conducting tissues known as vessels, while gymnosperms (with the exception of Gnetum) do not. State its two characteristics. WebGymnosperms are a smaller, more ancient group, and it consists of plants that produce naked seeds (seeds that are not protected by a fruit). Vessels. Pumpkin dicot Answer: Why gymnosperms are more advanced than the bryophytes? Naked embryo is the term which refers to an embryo which is not borne inside the seed. Aves: Have forelimbs modified into wings for flight. Arthropoda. Gymnosperm vs. Angiosperm: Differences. All of them are unicellular and eukaryotic. Which of the following is not heterosporous? Spirogyra: Thallophyta, Fern: Pteridophyta, Funaria: Bryophyta, Pinus: Gymnosperm, Apple tree: Angiosperm, Mustard plant: Angiosperm. Feature : Reduced Coelomic cavity Octopus is the odd one out as it belongs to phylum Mollusca whereas others belong to phylum Arthropoda. 4. What is the difference between algae and fungi? What characteristics define an angiosperm? Write its advantage. Why angiosperms are called heterosporous? Answer: (a) Draw labelled diagrams of three protozoa. You are given leech, Nereis, Scolopendra, prawn and scorpion; and all have segmented body organisation. Gymnosperms In Cycas the microsporangia are born on which side of microsporophyll: Microsporangia are born on the abaxial or morphologically lower surface of microsporophylls. However, Pteridium on the other hand is homosporous. (e) chlorophyll The "endosperm" is a tissue in which the nutrient substances necessary for the development of the embryo are deposited. What is the difference between gymnosperm and angiosperm? () Duck-billed platypus and Echidna are the egg laying mammals. They formed dominant vegetation on the earth about 200 million years ago, and have been replaced by the angiosperms with the changing time and climatic conditions. The zygote develops into an embryo, whereas the. Answer: The conventions followed while writing the scientific names are: Scientific name of Mango is Mangifera indica and of Tiger is Panthera tigris. Answer: In the most primitive plants, like mosses, the gametophyte is dominant (i.e. Poriferans have hole or pores all over the body that lead to a system that helps in circulating water to bring in food and oxygen. Write the salient features of this group. The plants which bear naked seeds which are not enclosed in fruit are called gymnosperms. Many tropical ferns can live on other plants without withdrawing nutrients from them. Write four main features of pteridophyta and give two examples. () Egg laying mammals (f) Plants without well differentiated stem, root and leaf are kept in _______ Gymnosperms WebDiscuss the type of seeds produced by gymnosperms, as well as other characteristics of gymnosperms. In several gymnosperms, polyembryony is so common that it might be regarded as an important character of this group. Give one example for each group. Nematoda Called as roundworms, bilaterally symmetrical having pseudocoelom, example Ascaris, Annelida Have a metamerically segmented body and a true coelom, example Earthworm. 3. of chromosomes in its root and endosperm. What structure is common to both gymnosperms and angiosperms? What is the main difference between gymnosperm and angiosperm reproduction? Why are bryophytes called as Amphibians of plant kingdom9? Enlist the features of organisms placed in Protista. They formed dominant vegetation on the earth about 200 million years ago, and have been replaced by the angiosperms with the changing time and climatic conditions. Answer: Question 6. Diplontic life cycle is exhibited by some green algae, brown algae and all seed bearing plants i.e. Gymnosperms belong to kingdom Plantae and sub-kingdom Embryophyta. State any two characteristics of Mammalia. WebPteridophytes Pteridophytes are a group of primitive land plants belongs to Cryptogams. The system of scientific naming of the organism which consists of a generic name and a specific epithet is called as binomial nomenclature. Answer: Gymnosperms are more ancient than angiosperms. What are gymnosperms? Because Pinus is a gymnosperm plant, gymnosperm don't bear flower they only bear seeds. Identify the kingdom in which the organisms do not have a well-defined nucleus and are not able to show multicellular designs.

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