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Question 2
A
allow sunlight to pass through. 
B
are covered by a waxy cuticle 
C
all possess a similar structure and function 
D
allow water to enter them by osmosis 
Explanation.
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Correct Option:
C
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Question 4
A
mutual interdependence between component cells 
B
internal structural specialization 
C
increased adaptation to environment 
D
slower rate of diffusion of oxygen to individual cells 
Explanation.
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Correct Option:
D
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Question 6
A
Homologous chromosomes separate 
B
Two daughtercells are formed 
C
Fertilization occurs 
D
Segregation of genes occurs 
Explanation.
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Correct Option:
A
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Question 7
A
athlete must have eaten food containing lactic acid just before the race 
B
Athlete must have injected lactic acid into his blood just before the race 
C
athletes muscle must have carried out anaerobic respiration during the race 
D
athlete must have inhaled lactic acid from the environment during the race 
Explanation.
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Correct Option:
C
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