16
Which one of the following annelids is commonly known as the sea mouse?
1
Aphrodite
2
Aplysia
3
Polynoe
4
Chaetopterus
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17
The typhlosole of earthworm is related with
1
excretion
2
respiration
3
reproduction
4
absorption
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18
Proboscis of butterfly is formed from
1
paraglossa
2
labrum
3
maxilla
4
mandible
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19
The ophiopluteus larva of Echinodermata belongs to the class
1
Holothuroidea
2
Ophiuroidea
3
Echinoidea
4
Asteroidea
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20
In pigeon, milk is secreted by both sexes through
1
liver
2
gizzard gland
3
crop gland
4
salivary gland
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21
Which one of the following is a fish?
1
Sea cow
2
Sea cucumber
3
Sea horse
4
Sea urchin
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22
Petromyzon is not a true fish because of
1
absence of median fins
2
presence of gills
3
absence of paired fins and true jaws
4
absence of operculum
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Answer: absence of paired fins and true jaws
23
Desmosomes are concerned with
1
cell adherence
2
cell division
3
cellular excretion
4
cytolysis
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24
Spindle apparatus is made up of
1
endoplasmic reticulum
2
polysome
3
microtubule
4
spherosome
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25
Which of the following types of gametes are produced from an animal with RrYY genotype?
1
RY, Ry, rY, ry
2
RY, rY
3
RY, RY, Ry, rY
4
rY, ry, Ry, iy
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26
Frameshift mutation occurs, when
1
base is added
2
base is deleted
3
base is added or deleted
4
anticodons are not present
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Answer: base is added or deleted
27
The successive nucleotides of DNA are covalently linked through
1
peptide bond
2
hydrogen bond
3
glycosidic bond
4
phosphodiester bond
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Answer: phosphodiester bond
28
Wheel organ is found in
1
Ascidia
2
Balanoglossus
3
Amphioxus
4
Annelids
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29
In which one of the following fishes, male shows pareintal care?
1
Anabas
2
Labeo
3
Sea horse
4
Synaptula
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30
Bidder's organ in frog is attached to
1
liver
2
kidney
3
ovary
4
lung
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