Sunday, March 24, 2024

4. Animal kingdom Class XI

1. Among the following, most complex level of organization is present in

(a) Annelida

(b) Platyhelminthes

(c) Coelentrata

(d) Porifera

Answer

Ans.(a)


2. The layer absent in the embryos of diploblastic animals is

(a) Ectoderm

(b) Mesoderm

(c) Endoderm

(d) Mesoglea

Answer

Ans.(b)


3. In the course of evolution, true coelom appeared for the first time in

(a) Chordata

(b) Annelida

(c) Aschelminthes

(d) Echinodermata

Answer

Ans.(b)


4. On which body side, the notochord is formed during the embryonic development?

(a) Lateral

(b) Ventral

(c) Dorsal

(d) Bilateral

Answer

Ans.(c)


5. Which of the following animals have tube within tube body plan evolved along deuterostomic evolutionary line?

(a) Annelids

(b) Arthropods

(c) Echinoderms

(d) Molluscs

Answer

Ans.(c)


6. The larva of mosquitoes are

(a) Maggot

(b) Wriggler

(c) Tornaria

(d) Grub

Answer

Ans.(b)


7. The fertilization is ______ and development is _______ in sponges.

(a) External, Indirect

(b) External, direct

(c) Internal, Indirect

(d) Internal, direct

Answer

Ans.(a)


8. Which of the following is not the function of water transport system in sponges?

(a) Circulation of food

(b) Respiratory exchange

(c) Removal of wastes

(d) Nervous Control

Answer

Ans.(d)


9. Spongilla is

(a) Bath Sponge

(b) Boring Sponge

(c) Deadman’s Fingers

(d) Freshwater sponge

Answer

Ans.(d)


10. Which among the following is given as a gift in Japan?

(a) Spongilla

(b) Euplectella

(c) Cliona

(d) Chalina

Answer

Ans.(b)


11. Which of the following cnidarian exhibits Metagenesis?

(a) Hydra

(b) Adamsia

(c) Obelia

(d) Meandrina

Answer

Ans.(b)


12. Pearl is produced by

(a) Pinctada

(b) Pila

(c) Aplysia

(d) Octopus

Answer

Ans.(a)


13. How many classes are there in Phylum Platyhelminth

(a) Three

(b) Two

(c) Four

(d) Five

Answer

Ans.(a)


14. Which of the following statements is incorrect about sea walnuts?

(a) They are diploblastic animals

(b) They exhibit tissue level of organization

(c) They undergo indirect development

(d) Fertilisation is internal

Answer

Ans.(d)


15. Flatworms are

(a) Pseudocoelomate

(b) Triploblastic

(c) Coelomates

(d) Diploblastic

Answer

Ans.(b)


16. Mushroom gland is seen in

(a) Earthworm

(b) Cockroach

(c) Frog

(d) Snake

Answer

Ans.(b)


17. In contrast to annelids, flatworms show

(a) Absence of body cavity

(b) Bilateral Symmetry

(c) Radial symmetry

(d) Pseudocoel

Answer

Ans.(a)


18. Syncytial epidermis occurs in

(a) Ascaris

(b) Wucheraria

(c) Ancylostoma

(d) Enterobius

Answer

Ans.(a)


19. Female ascaris can be differentiatied from male by

(a) Presence of cloaca

(b) Presence of penial setae

(c) Shorter Size

(d) Longer than male

Answer

Ans.(d)


20. An intermediate host is present in

(a) Ascaris

(b) Wucheraria

(c) Ancylostoma

(d) Enterobius

Answer

Ans.(b)


21. The secondary host of Wucheraria is

(a) Anopheles

(b) Sand Fly

(c) Tse tse fly

(d) Culex

Answer

Ans.(d)


22. Which of the following enters the body through the skin of feet in man, if he walks bare footed in contaminated soil?

(a) Ascaris

(b) Wucehraria

(c) Ancylostoma

(d) Enterobius

Answer

Ans.(c)


23. Nereis possess lateral appendages, which help in

(a) Locomotion

(b) Swimming

(c) Respiration

(d) All of these

Answer

Ans.(d)


24. Which of the following is free living

(a) Ascaris

(b) Wucheraria

(c) Hirudinaria

(d) Planaria

Answer

Ans.(d)


25. All of the following are sensory structures of arthropods, except

(a) Ocilla

(b) Stat cysts

(c) Antennae

(d) Malpighian tubules

Answer

Ans.(d)


26. The tracheal system helps in the

(a) Digestion

(b) Excretion

(c) Respiration

(d) Reproduction

Answer

Ans.(c)


27. Blood of insects is

(a) Colourless

(b) Red

(c) Blue

(d) Green

Answer

Ans.(a)


28. Choose the incorrect match

(a) Gregarious Pest – Locusta

(b) Living fossil – Limulus

(c) Vector – Lucifer

(d) Economy – Apis

Answer

Ans.(c)


29. What is common between earthworm and cockroach?

(a) Nephridia

(b) Closed circulation

(c) Solid ventral nerve cord

(d) Malpighian Tubules

Answer

Ans.(c)


30. Which of the following is not an exclusive trait of Arthropoda?

(a) Presence of wings

(b) Jointed Appendages

(c) Compound Eyes

(c) Chitin Exoskeleton

Answer

Ans.(a)


31. Eye of which molluscan group resembles vertebrate eye?

(a) Bivalvia

(b) Gastropoda

(c) Pelecypoda

(d) Cephalopoda

Answer

Ans.(d)


32. Silver fish is

(a) Mollusca

(b) Arthropoda

(c) Cnidaria

(d) Annelida

Answer

Ans.(b)


33. Study of shells of mollusca is known as

(a) Malcology

(b) Conchology

(c) Ophiology

(d) Saurology

Answer

Ans.(b)


34. Tailed Amphibian is

(a) Unio

(b) Urodele

(c) Salamander

(d) Nautilus

Answer

Ans.(c)


35. Larva is radially symmetrical but adult is Bilateral symmetry in

(a) Phylum Mollusca

(b) Phylum Echinodermata

(c) Phylum Annelida

(d) Phylum Hemichordata

Answer

Ans.(b)


36. Gill cover in fishes are also called as

(a) operculam

(b) Parapodium

(c) Scales

(d) Dentalium

Answer

Ans.(a)


37. Pseudocoelomate among the following are

(a) Wucheraria

(b) Planaria

(c) Periplanata

(d) None

Answer

Ans.(a)


38. Phylum Echinodermata

(a) All are freshwater

(b) Some are marine

(c) All are marine

(d) Except few all are marine

Answer

Ans.(c)


39. Scientific name of our National Bird is

(a) Pheretima posthuma

(b) Pavo cristatus

(c) Periplnata Americana

(d) None

Answer

Ans.(b)


40. Vertebrate heart is

(a) Dorsal

(b) Ventral

(c) Lateral

(d) Dorso ventral

Answer

Ans.(b)


41. Cockroach has

(a) 2 chambered heart

(b) 3 Chambered heart

(c) 4 Chambered heart

(d) 13 chambered heart

Answer

Ans.(d)


42. Pneumatic bones are seen in

(a) Fishes

(b) Amphibians

(c) Repliles

(d) Aves

Answer

Ans.(d)


43. Which of the following are not Viviparous

(a) Sharks

(b) Scorpions

(c) Platypus

(d) Bats

Answer

Ans.(c)


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