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Question 21
A
production of egg 
B
storage of egg 
C
formation of new segment 
D
development of the suckers 
E
fragmentaion of the body segment 
Explanation.

The adult tapeworm possesses a series of flat, rectangular body segments, or proglottids, generated by the neck.


Correct Option:
C
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Question 22
A
two pairs of antennae 
B
jointed appendages 
C
exoskeleton 
D
three pairs of legs 
E
segmented body 
Explanation.

Insects possess one pair of antenna and not two pairs.


Correct Option:
A
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Question 23
A
a facultative parasite 
B
saprophyte 
C
an obligate parasite 
D
a commensal 
E
an autotroph 
Explanation.

A saprophyte or saprotroph is an organism which gets its energy from dead and decaying organic matter. This may be decaying pieces of plants or animals.


Correct Option:
B
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Question 28
A
Protection against bacteria infection 
B
Excretion of waste and water 
C
Production of vitamin d when exposed to sun light 
D
production of pigments to reduce temperature 
E
Regulation of body temperature 
Explanation.
  • Regulates body temperature.

  • Excretes toxic substances with sweat.

  • Protection of the body from harmful effects of the sun and radiation.

  • Preventspenetration of toxic substances.


Correct Option:
D
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Question 29
A
Boron 
B
Nitrogen 
C
Phosphorus 
D
Magnesium 
E
Potassium 
Explanation.

Boron (B) is not required by plants in high amounts, but can cause serious growth problems if it is not supplied at appropriate levels.


Correct Option:
A
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Question 30
A
absorption of glucose 
B
secretion of hydrochloric acid 
C
secretion gastric juice 
D
churning of food 
E
production of trypsin 
Explanation.

Trypsin is a serine protease from the PA clan superfamily, found in the digestive system of many vertebrates, where it hydrolyzes proteins. Trypsin is formed in the small intestine


Correct Option:
E
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