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1. Organ system level of organisation is observed i, (a) chordates (b) annelids “i, , (c) molluscs (d) All of these, , 2. In tissue level of organisation the k, (a) cells are arranged as loose cell aggregate |, (b) tissues are grouped to form organs :, {c) cells performing the same function are arranged into, groups, , (d) tissues are Srouped to form systems, , 3. Body cavity lined by mesoderm is called, (a) coelenteron : (b) pscudocoel, (c) coclom (d) blastocoel ., , 4. Which one of the following figures shows coclomate, condition?, , , , {a) A (b) B, , (c) C (d) None of these, , 5. A coclom is a |, , (a) cavity between body wall and gut wall, (b) body cavity lined by mesoderm, (c) body cavity not lined by mesoderm, (d) body cavity lined by endoderm :, 6, Fill in the blanks with the correct options., L. .. A... have cellular level of organisation., ll. Coelomisnotscenin...B..-.., I. Radial symmetry is seen in phylum-Coelenterata,, Ctenophora and ...C...+IV. Notochord is lacking in Dow, V, ...£... are bilaterally symmetrical., Here A to E refers to, (a) A-Platyhelminthes, B-Echinodermata, C-Arthropoda,, D-Mollusca, E-Porifers a, (b) A-Porifera, B-Platyhelminthes, C-Echinodermata,, D-Mollusca, E-A' ~_, (c) A-Porifera, B-Echinodermata, C-Mollusca,, D-Arthropoda, E-Platyhelminthes ‘ j, (d) A-Echinodermata, B-Arthropoda, C-Platyhelminthes,, D-Mollusca, E-Porifera, , “15. The response to external stimulus is maximally, , 7. The pseudocoelomate among these is», , (a) Porifera (b) Annelida, (c) Aschelminthes (d) Mollusca ", 8. Tube-within-tube body plan is found in which:, animal?, (2) Euspongia (b) Fasciola, (c) Hydra {d) None of these if, , 9. When the circulatory system lacks arteries, veins and, , capillaries, it is called as, {a) closed type, {b) mixed type, (c) inappropriate information, (d) open type, , 10. Radial symmetry is seen in, (a) Echinodermata, Ctenopbora and Cnidaria, (b) Mollusca, Porifera and Echinodermata, (©) Porifera, Annelida and Arthropoda, (d) None of the above, , 11. The term ‘bilateral symmetry’ refers, (a) when the body can be divided into two unequal halves, on passing central axis through it ., (b) to any plane passing through centre, which does not, divide the body into equal halves a, (c) when the body can be divided into identical left and, right halves only in one plane, (d) any plane passing through the central axis of the body, dividing the organism into two equal halves, 12. Phylum that exhibit radial or radial-like symmetry, is/are, , (a) Coclenterata (b) Echinodermata - “ey, , (c) Ctenophora (d) Allofthese | \') (t+, 13. Diploblastic animals belong to the phylum , (a) Protista (b) Protozoa, , (c) Coelenterata ({d) Platyhetminthes'’, , 14. Higher phylum like echinoderms are ., (a) triploblastic animals, (b) quadroblastic animals, (©) diploblastic animats, (d) uniblastic animals n, , quicker and more precise in which of the following, , symmetry?, (a) Radial (b) Bilateral (c) Spherical (d) Biradial, , Scanned with CamScanner

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16. Choose the false option., (4) Amoeba - Asyrnmetrical, (b) Coctenterates - Diploblastic, radial symmmesry,, non-chordates, (€) Chordates ~ Petromyzon, Ornitharitpnchwr, Equus, (d) Annelid ~ Pseudoccelomate, , 17. True segmentation is also called, , (a) metagenesis (b) metamorphosis, (©) metamerisen (d) metastasis, 18. The notochord is derived from which of the following, layers?, (a) Ectoderm (b) Mesoderm, (c) Endodern (d) Placedern, , 19, Which of the following isvare correct?, , (a) Notochord is ectodennal in origin present in soene, animals, , (b) Notochoed is 2 mesodermally derived rod-like structure, formed on the dorsel side in embryonic developencat in, some enimals, , (c) Arthropoda are noe-chordates, , (d) Both (b) and (c), , 20. Triploblastic, unsegmented, acoelomate exhibiting, , bilatera] symmetry and reproducing both asexually, . and sexually, with some parasitic forms., , The above description is the characteristic of phylum, (a) Annelida (b) Cenopbora, (c) Caidaris (d) Plaryhelminches, , 21. The cross-section of the body of an invertebrate is, given below. Identify the animal, which has this body, plan., , , , (a) Cockroach j ‘, , (b) Roundworm ‘ i, , (c) Planaria, , (d) Earthworm ;, 22, The animal with bilateral symmetry in young, , and radial pentamerous symmetry in the adult st, , belongs to the phylum, , (a) Annelide, , (b) Mollasca, , (c) Cnidaria, , (d) Echinodermata, , 28, Which one of the following sets of animals belong, a single taxonomic group? 5, (a) Cuttlefish, jellyfish, silverfish, dogfish starfish, (b) Bat, pigeon, butterfly, (c) Monkey, chimpanzee, mar, (d) Silkworm, tapeworm, earthworm, 24, Which one of the following statements is totally, wrong about the occurrence of notochord, while, other three ere correct?, (a) It is present only in larval tail in ascidian, (>) It is replaced by a veriebral column in adult frog, (¢) Itis absent throughout life in humans from the very,, beginning, (@) Itispresent throughout life in Amphionus, 25, In some chordates, the notochord is modified as, vertebral column. Such animals are called, Which one of these statements makes sense?, (a) All chordates are vertebrates, but all vertebrates are, chordates, , , , , , , , , , , , , (0) All vertebeates are chordates and all chardates are, Vertebrates, , (c) All vertebrates are chordates, but all chordates are, vertebrates, , (d) chordates are not vertebrates and vertebrates are not, , Scanned with CanScanner

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The skeletons of animal ;, 1 porifera are made up nals belonging to phylum, , (a) spicules () Spitacles (c) spines, , (d) Spongocytes, ,_ Asexual reproduction i, Ms (a) binary Bai" tby teams Puace by, (c) fragmentation (a) seed, , which of the following i, © coclenterata? 0. ht ue regarding phylum, , (a) bo oe animals, (b) They have cellular level of organisation, (c) They have nematocyte cells present on the tentacles, (d) The gastrovascular opening is called the hypostome, 3, The animal(s) that never perform locomotion, voluntarily is/are, (a) Ascaris th (b) Leucosolenia, (c) Both (a) and (6) (@) Hydra, A. Cnidarians are divided into the following classes., (a) Hydrozoa, Desmospongia and Scyphozoa, (b) Actinozoa, Scyphozoa and Anthozoa, (c) Scyphozoa, Anthozoa and Hydrozoa, (d) None of the above, , 5, Body forms present in cnidarians are, (a) cylindrical and umbrella-shaped, (b) corals and coral reefs, (c) polyp and medusa, (d) enidoblasts and nematocysts, , ‘6. Medusa is the sexually reproductive structure of, (a) Hydra (b) Obelia, (c) Sea anemone (d) None of these, 37. Metagenesis is scen in, (a) Hydra (b) Aurelia (c) Obelia (d) Adamsia, 38. Alternation of generation is also called, (a) metamorphosis (b) metastasis, (c) metazoan - (d) metagenesis, 19. The skeleton of corals is composed of, (a) siliceous spicules (®) calcium sulphate, (c) calcium carbonate —(d) potassium sulphate, , 10. The type of asexual reproduction found in Hydra is, (a) multiple fission (b) budding ;, (c) sporulation (d) binary fission, , 11. Which of the following statements is true?, (a) Phylum-Porifera — Presence of choanocytes and, , (b) Phylum-Coelenterata ~ Meandrina belongs to this, , (c) Fae sieeaphons _- All exhibit bilateral symunetry, , only, (a) Phylum-Platyhe, phylum, , Iminthes ~ Wuchereria belongs to this, , Scanned with CamScanner