Aschelminthes Nemathelminthes - Questions & Answers | Exam2Win

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151. A feature absent in annelids is

A. Clitellum

B. Pseudocoelom

C. Metameric segmentation

D. Nephridia

Explanation:

152. Trochophore larva occurs in

A. Chiton

B. Nereis

C. Aphrodite

D. All the above

Explanation:

153. Heart to pump blood evolved for the first time in

A. Annelids

B. Arthropods

C. Roundworms

D. Flatworms

Explanation:

154. Pick up the matching pair of body feature and animal possessing it

A. Ventral central nervous system …………. Leech

B. Ventral heart …………..Scorpion

C. Post anal tail …………… Octopus

D. Pharyngeal gill slits absent in embryo …………… Chameleon

Explanation:

155. Annelids have a central nerve cord which is

A. Hollow

B. Impermeable to K⁺ ions

C. Dorsal

D. Ventral

Explanation: