Which one of the following sets of animals belongs to a single taxonomic group?

• Cuttlefish, Jellyfish, Silverfish, Dogfish, Starfish

• Bat, Pigeon, Butterfly

• Monkey, Chimpanzee, Man

• Silkworm, Tapeworm, Earthworm

22.

Which one of the following statements is incorrect?

• Mesoglea is present in between ectoderm and endoderm in Obelia.

• Radial symmetry is found in Asterias

• Fasciola is a pseudocoelomate animal
• Taenia is a triploblastic animal

Which one of the following statements is incorrect?

• In cockroaches and prawns excretion of waste material occurs through malpighian tubules.

• In ctenophors, locomotion is mediated by comb plates.

• In Fasciola flame cells take part in excretion

• Earthworms are hermaphrodites and yet cross-fertilization takes place among them.

Which one of the following is oviparous?

• Platypus

• Flying fox

• Elephant

• Whale

Which one of the following is not a poisonous snake?

• Cobra

• Viper

• Python

• Krait

Match the following list of animals with their level of organisation.

Division of Labour Animal

A. Organ level                      i. Pheritima

B. Cellular agregate level        ii. Fasciola

C. Tissue level                      iii. Spongilla

D. Organ system level            iv. Obelia

Choose the correct match showing division of labour with animal example.

• i-B, ii-C, iii-D, and iv-A

• i-B, ii-D, iii-C, and iv-A

• i-D, ii-A, iii-B, and iv-C

• i-A, ii-D, iii-C, and iv-B

Body cavity is the cavity present between body wall and gut wall. In

some animals the body cavity is not lined by mesoderm. Such animals

are called

• Acoelomate

• Pseudocoelomate

• Coelomate

• Haemocoelomate

Match the column A with column B and choose the correct option

Column A Column B

A. Porifera                i. Canal system

B. Aschelminthes       ii. Water-vascular system

C. Annelida               iii. Muscular Pharynx Comb plates

D. Arthropoda           vi. Jointed appendages

• A-ii, B-iii, C-v, D-iv, E-i

• A-ii, B-v, C-iii, D-iv, E-i

• A-i, B-iii, C-v, D-iv, E-ii

• A-i, B-v, C-iii, D-iv, E-ii

Give an example of
a. Roundworm
b. Fish possessing poison sting
c. A limbless amphibia
d. An oviparous animal

Endoparasites are found inside the host body. Mention the special structures possessed by these to enable them to survive in those conditions.