Multiple Choice QuestionsThe body of Rohu fish is covered by
cycloid scale, but the tail of homocercal
placoid scale, but the tail of heterocercal
cycloid scale, but the tail of heterocerca
placoid scale, but the tail is homocercal
Which one of the following matching pairs is incorrect?
Mollusca - Pseudocoel
Cnidaria - Nematocyst
Annelida - Chloragogen cells
Echinodermata - Water vascular system
A.
Mollusca - Pseudocoel
Molluscs are coelomate animals. In such animals, body cavity is lined by mesoderm. Whereas, in some animals body cavity is not lined by mesoderm, instead, the mesoderm is persent as scattered pouches in between the ectoderm and endoderm. Such animals are called pseudocoelomates, e.g. Aschelminthes.
Which one of the following matching pairs is incorrect?
Shell fish - Pisces
Silver fish - Arthropoda
Cuttle fish - Mollusca
Star fish - Echinodermata
Which one of the followings is not a characteristic feature of mammals?
Diphyodont tooth
Ten pairs of cranial nerves
Seven cervical vertebrae
Left aortic arch in the circulatory system
Antelope cervicapra is
a mammal
commonly known as black back
an animal under data deficient category of wildlife
a threatened Indian wildlife
The largest type of nematocysts in Hydra is
Holotrichous isorhizas
Atrichous isorhizas
Desmonemes
Stenoteles
Which of the following represents the class of Tubifex?
Echiurida
Archiannetida
Hirudinea
Oligochaeta
Select the mismatch from those given below.
Noctiluca bioluminescence
Gonyaulax catenella saxitoxin
Pyrodinum red tide
Ceratium-zygotic meiosis
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