NEET Biology Animal Kingdom MCQs Set 21

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Chapter-wise Objective Questions: Animal Kingdom

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Multiple Choice Questions

Question 1: Tube feet are the characteristic structures of
(a) Star fish
(b) Jelly fish
(c) Devil fish
(d) Cuttle fish
Show Answer & Explanation

Answer: (a) Star fish

Explanation:
1. Tube feet of the water vascular system characterise echinoderms like starfish.

Teacher's Note:
1. Jelly fish are cnidarians.

Question 2: Which of the following is not a character of phylum Hemichordata?
(a) Presence of stomochord which is mesodermal in origin
(b) Excretory organ is proboscis gland
(c) Circulatory system is open
(d) Respiration takes place through gills
Show Answer & Explanation

Answer: (a) Presence of stomochord which is mesodermal in origin

Explanation:
1. The stomochord of hemichordates is endodermal, not mesodermal, in origin.

Teacher's Note:
1. Stomochord resembles notochord.

Question 3: Which of the following statements are correct about the life cycle of Ascaris lumbricoides?
A. Infective agent - Embryonated egg with II Juvenile
B. Fertilised eggs containing the unsegmented ovum are passed with faeces
C. Four moultings of the larva occur two outside in soil within the egg-shell, one in lungs and one in intestine
D. Site of location of worm - small intestine.
(a) A and B
(b) A only
(c) A, B & D
(d) A, B, C & D
Show Answer & Explanation

Answer: (c) A, B & D

Explanation:
1. Embryonated eggs with second juvenile infect, fertilised eggs with an unsegmented ovum pass in faeces, and the adult worm lives in the small intestine. Statement C about moulting positions is incorrect.

Teacher's Note:
1. Eggs are ingested with contaminated food.

Question 4: Which of the following animals does not undergo metamorphosis?
(a) Earthworm
(b) Tunicate
(c) Starfish
(d) Moth
Show Answer & Explanation

Answer: (a) Earthworm

Explanation:
1. Earthworm shows direct development without a larval stage, so it has no metamorphosis; tunicates, starfish and moths do.

Teacher's Note:
1. Metamorphosis needs a larva.

Question 5: In case of poriferans the spongocoel is lined with flagellated cells called
(a) Ostia
(b) Oscula
(c) Choanocytes
(d) Mesenchymal cells
Show Answer & Explanation

Answer: (c) Choanocytes

Explanation:
1. The spongocoel of sponges is lined by flagellated choanocytes (collar cells).

Teacher's Note:
1. Choanocytes create water current.

Question 6: An important characteristic that Hemichordates share with Chordates is
(a) Absence of notochord
(b) Ventral tubular nerve cord
(c) Pharynx with gill slits
(d) Pharynx without gill slits
Show Answer & Explanation

Answer: (c) Pharynx with gill slits

Explanation:
1. Hemichordates and chordates both have a pharynx with gill slits.

Teacher's Note:
1. Notochord is absent in hemichordates.

Question 7: Match Column-I with Column-II for housefly classification and select the correct option using the codes given below: Column-I Column-II
a. Family (i) Diptera
b. Order (ii) Arthropoda
c. Class (iii) Muscidae
d. Phylum (iv) Insecta Codes: a b c d
(a) (iii) (i) (iv) (ii)
(b) (iii) (ii) (iv) (i)
(c) (iv) (iii) (ii) (i)
(d) (iv) (ii) (i) (iii)
Show Answer & Explanation

Answer: (a) (iii) (i) (iv) (ii)

Explanation:
1. The housefly is classified as Family Muscidae, Order Diptera, Class Insecta, Phylum Arthropoda.

Teacher's Note:
1. Climb from family to phylum.

Question 8: Which of the following features is not present in the Phylum-Arthropoda?
(a) Jointed appendages
(b) Chitinous exoskeleton
(c) Metameric segmentation
(d) Parapodia
Show Answer & Explanation

Answer: (d) Parapodia

Explanation:
1. Parapodia occur in aquatic annelids like Nereis, not in arthropods.

Teacher's Note:
1. Arthropods have jointed appendages.

Question 9: Metagenesis refers to:
(a) Presence of a segmented body and parthenogenetic mode of reproduction
(b) Presence of different morphic forms
(c) Alternation of generation between asexual and sexual phases of an organism
(d) Occurrence of a drastic change in form during post-embryonic development
Show Answer & Explanation

Answer: (c) Alternation of generation between asexual and sexual phases of an organism

Explanation:
1. Metagenesis is alternation of generations between asexual (polyp) and sexual (medusa) phases.

Teacher's Note:
1. Seen in Obelia.

Question 10: Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of phylum:
(a) Protozoa
(b) Coelenterata
(c) Porifera
(d) Mollusca
Show Answer & Explanation

Answer: (c) Porifera

Explanation:
1. A body with a meshwork of cells, internal cavities lined with flagellated filtering cells and indirect development describes Porifera.

Teacher's Note:
1. Sponges.

Question 11: Which of the following characteristics is mainly responsible for diversification of insects on land?
(a) Eyes
(b) Segmentation
(c) Bilateral symmetry
(d) Exoskeleton
Show Answer & Explanation

Answer: (d) Exoskeleton

Explanation:
1. The exoskeleton prevents water loss and protects the body, which let insects colonise land.

Teacher's Note:
1. Chitin.

Question 12: Which of the following endoparasites of humans does show viviparity?
(a) Ascaris lumbricoides
(b) Ancylostoma duodenale
(c) Enterobius vermicularis
(d) Trichinella spiralis
Show Answer & Explanation

Answer: (d) Trichinella spiralis

Explanation:
1. Trichinella spiralis is viviparous, laying live larvae, unlike Ascaris, Ancylostoma and Enterobius which lay eggs.

Teacher's Note:
1. Cause of trichinosis.

Question 13: Select the Taxon mentioned that represents both marine and fresh water species
(a) Echinoderms
(b) Ctenophora
(c) Cephalochordata
(d) Cnidaria
Show Answer & Explanation

Answer: (d) Cnidaria

Explanation:
1. Echinoderms, ctenophores and cephalochordates are exclusively marine, whereas cnidarians include freshwater forms like Hydra.

Teacher's Note:
1. Hydra is freshwater.

Question 14: Which one of the following living organisms completely lacks a cell wall?
(a) Cyanobacteria
(b) Sea-fan(Gorgonia)
(c) Saccharomyces
(d) Blue-green algae
Show Answer & Explanation

Answer: (b) Sea-fan(Gorgonia)

Explanation:
1. Sea fan (Gorgonia) is an animal and lacks a cell wall; cyanobacteria and yeast have walls.

Teacher's Note:
1. Animals lack cell walls.

Question 15: Planaria possess high capacity of
(a) Metamorphosis
(b) Regeneration
(c) Alternation of generation
(d) Bioluminescence
Show Answer & Explanation

Answer: (b) Regeneration

Explanation:
1. Planaria has a great power of regeneration.

Teacher's Note:
1. Flatworm.

Question 16: Which group of animals belong to the same phylum?
(a) Earthworm, Pinworm, Tapeworm
(b) Prawn, Scorpion, Locusta
(c) Sponge, Sea anemone, Starfish
(d) Malarial parasite, Amoeba, Mosquito
Show Answer & Explanation

Answer: (b) Prawn, Scorpion, Locusta

Explanation:
1. Prawn, scorpion and Locusta all belong to the phylum Arthropoda.

Teacher's Note:
1. Check the phylum.

Question 17: One of the representatives of Phylum Arthropoda is
(a) Silverfish
(b) Pufferfish
(c) Flying fish
(d) Cuttlefish
Show Answer & Explanation

Answer: (a) Silverfish

Explanation:
1. Silverfish is an insect (arthropod), whereas puffer fish, flying fish and cuttlefish are not arthropods (fish and mollusc).

Teacher's Note:
1. Name tricks.

Question 18: Which of the following are correctly matched with respect to their taxonomic classification?
(a) Flying fish, cuttlefish, silverfish, - Pisces
(b) Centipede, millipede, spider, scorpion - Insecta
(c) House fly, butterfly, tsetsefly, silverfish - Insecta
(d) Spiny anteater, sea urchin, sea cucumber -Echinodermata
Show Answer & Explanation

Answer: (c) House fly, butterfly, tsetsefly, silverfish - Insecta

Explanation:
1. House fly, butterfly, tsetse fly and silverfish are all insects.

Teacher's Note:
1. Spiny anteater is a mammal.

Question 19: Which one of the following kinds of animals are triploblastic?
(a) Corals
(b) Flat worms
(c) Sponges
(d) Ctenophores
Show Answer & Explanation

Answer: (b) Flat worms

Explanation:
1. Flatworms are triploblastic, whereas corals, sponges and ctenophores are diploblastic or lack true germ layers.

Teacher's Note:
1. Three germ layers.

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