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NAT II Biological Science Zoology MCQs With Answers
Question # 1
Oligochaetes are
Choose an answer
Monoecious.
Dioecious.
Monoecious dioecious.
asexual.
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Question # 2
------------- harbours the sexual stages of the parasite
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Intermediate host
Definitive host
None of above
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Question # 3
The diversity of body forms and lifestyles present in the phylum Mollusca is an excellent example of adaptive radiation
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True
False
None of Above
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Question # 4
Earthworms belong to the annelid subclass
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Hirudinea.
Chaetognatha.
Polychaeta.
Oligochaeta.
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Question # 5
The mantle of most mollusks
Choose an answer
is modified for locomotion
is used in attracting prey
secretes the shell
supports the radula
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Question # 6
The Gastropoda and the Cephalopoda form a clade characterized by a dorsoventrally elongate body and shell coiling.
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True
False
None of Above
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Question # 7
Polymorphism is characteristic of phylum
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phylum Nematoda
phylum Annelida
phylum Cnidaria
None of above
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Question # 8
Nematodes live in both aquatic and terrestrial environments
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True
False
none of the above
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Question # 9
Where would you look for a kinorhynch?
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a marine environment
a freshwater environment
on land that is relatively moist
on land that is relatively dry
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Question # 10
Molluscs can be characterized by:
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Trochophore larvae, and they are deuterostomes.
Planaria larvae, and they are protostomes.
Trochophore larvae and they are protostomes.
Planaria larvae, and they are deuterostomes
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Question # 11
The scientist who describe a system of classification that distinguished between kingdoms according to cellular organization and mode of nutrition was
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R. M. Kristensen
Carolus Linnaeus
Rebert II. Whittaker
None of above
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Question # 12
In Schizogony ----------- divisions takes place in mature individual
Choose an answer
Mitotic
Meiotic
Multiple mitotic
First mitotic then meiotic
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Question # 13
A distinctive feature of members of the subclass Hirudinea is
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Parapodia.
Tentacles.
Anterior and Posterior suckers.
Palps.
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Question # 14
Annelids and Arthropods share all of the following characteristics except one. Select the exception.
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A ventral cord
A complete digestive tract
Metamerism
An exoskeleton
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Question # 15
A clitellum is present in the members of the class Polychaeta is
Choose an answer
Hirudinea.
Polychaeta.
Oligochaeta.
IIirudinea and Oligochaeta
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Question # 16
Phylum Rotifera consist of --------- classes.
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two
three
four
five
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Question # 17
Which one of the following do not lie in phylum ciliophora?
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Paramyxa
Vorticella
Paramecium
Balantidium
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Question # 18
Which of the following is true of the visceral mass of a mollusc?
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It contains the gills
It secretes the shell
It is used in locomotion
It contains gonads and digestive glands
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Question # 19
All the following are unique to the molluscs except one. Select the exception.
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mantle
shell
visceral mass
head-foot
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