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NAT II Biological Science Zoology MCQs With Answers
Question # 1
------------- harbours the sexual stages of the parasite
Choose an answer
Intermediate host
Definitive host
None of above
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Question # 2
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 # 3
Presence of metameric segmentation
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Lumbricus
Daphnia
Arenicola
Both A and C are correct
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Question # 4
Phylum Rotifera consist of --------- classes.
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two
three
four
five
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Question # 5
Which of the following is not true with respect to nematode reproduction?
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Most nematodes are dioecious
Most nematodes are dimorphic
Males are larger than the females
Gonads lie free in the pseudocoelom.
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Question # 6
The excretory product in protozoa is primarily
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Urea
Ammonia
Uric acid
None of these
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Question # 7
Animals of phylum cnidaria are
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Diploblastic
Triploblastic
None of above
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Question # 8
In phytomastigophorean each chloroplast has a structure -------------- which stores and synthesizes polysaccharides.
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Stigma
Pyrenoid
Euglenoid
None of above
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Question # 9
Members of the gastropod subclass Pulmonata are predominantly freshwater or terrestrial. Their mantle is modified into a lung, which opens to the outside of the mantle cavity through a/an
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Siphon.
Pneumostome.
Umbo.
Operculum
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Question # 10
Scientific name of blood fluke is
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Schistosoma
Taenia solium
Echinocissus granulosus
Clonorchis sinensis
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Question # 11
Coccidians and Plasmodium are the examples of phylum---------.
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Microspora
Acetoospora
Apicomplexa
Myxozoa
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Question # 12
All of the following mollusc characters would be found in a member of the class Bivalvia except one. Select the exception.
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Visceral mass
head-foot
mantle cavity
radula
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Question # 13
Which of the following phyla are not pseudocoelomate?
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Acanthocephala
Rotifera
Polychaeta
Nematoda
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Question # 14
Cephalopods rely on olfactory senses for detecting prey
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True
False
None of above
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Question # 15
The Gastropoda and the Cephalopoda form a clade characterized by a dorsoventrally elongate body and shell coiling.
Choose an answer
True
False
None of Above
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Question # 16
The annelid class whose members are mostly marine is
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Hirudinea.
Oligochaeta.
Polychaeta.
Clitellata.
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Question # 17
Subkingdom protozoa consist of --------- separate phyla within the kingdom protista.
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Eight
Six
Five
Seven
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Question # 18
A regular arrangement of microtubules called --------- underlies the plasma membrane of many protozoa
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Pellicle
mesosomes
peroxisomes
Both A and B are correct
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Question # 19
Characteristics of the phylum Rotifera include all of the following except
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a well-developed cuticle
absence of protonephridia
parthenogenesis is common
triploblastic, bilateral, unsegmented, pseudocoelomate.
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Question # 20
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 # 21
The approach which makes hypothesis of geneological relationships among monophyletic groups of organisms is
Choose an answer
evolutionary systematic
Phylogenetic systematic
Numarical taxonomy
Both A and C
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