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Animal Kingdom

Short Answer Type

231.

Name two internal characteristic features of class-Mammalia

232.

State the advantages of composite fish culture.

Multiple Choice Questions

233.

'Water vascular' system is found in

sea-anemone
sea-pen
sea-cucumber
sea-horse

234.

Retrogressive metamorphosis occurs in

Hemichordata
Cephalochordata
Urochordata
Vertebrata

235.

'Organ of Jacobson' helps in

touch
vision
smell
hear

236.

Cysticercus stage is formed in

Taenia
Plasmodium
Leishmania
Wuchereria

237.
Which of the following is a catadromous fish?

Hilsa sp.

Mystus sp.

Anguilla sp.

Channa sp.

Anguilla sp.

Anguilla sp, is a catadromous fish found on the Eastern coast of North America. It has a snake-like body with a small sharp pointed head. It has sharp pointed teeth but no pelvic fins. It is very similar to the European eel, but the two species differ in number of chromosomes and vertebrae.