BIOLOGY | Study Mode

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Question 22
A
grasses 
B
hawks 
C
lizards 
D
snakes 
Explanation.
Share Answer The number decreases while the size of the species increase as we move to the upper trophic level of the food chain (B).

Correct Option:
B
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Question 23
A
branch root originate in the pericycle while branch stems do not. 
B
Stems are always below the ground while rots are always under the ground 
C
Stems are positively geotropic while roots are negatively geotropic 
D
Stems are sometimes used for storage while roots are never so used. 
Explanation.
Correct Option:
A
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Question 24
A
a->b---c->d 
B
c-d---a-b 
C
b->c->a->d 
D
b->d->a-c 
Explanation.
Share Answer Protein > peptone(d) > polypeptide (a)> amiftacid(c). (D).

Correct Option:
D
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Question 25
A
chime 
B
curd 
C
glycogen 
D
paste 
Explanation.
Share Answer The walls of the stomach are muscular and regular peristatic movements churn up the food, mixing it thoroughly with the gastric juice. By the time it is ready to leaves the stomach, the food looks like a watery paste, called CHYME (A).

Correct Option:
A
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Question 27
A
25% 
B
50% 
C
70% 
D
45% 
Explanation.
Share Answer Heamophilia is an abnormality controlled by a recessive gene located on the y - chromosome. The percentage of the carrier is 50% (B)

Correct Option:
B
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Question 28
A
genus 
B
species 
C
phylum 
D
kingdom. 
Explanation.
Share Answer All living things are classified into 2 major kingdoms, plant and animal kingdom (D)

Correct Option:
D
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Question 29
A
euglena 
B
blue green algae 
C
ferns 
D
grasses 
Explanation.
Share Answer The prothallus of a fern is equivalent to the gametophyte generation of a moss because it generations. That is, in their life cycle a sexual (sporophyte) generation and sexual (gametophyte) generation alternate (B). bears the sexual organs, while the fern plant is equivalent to the sporophyte or spore bearing generation, so we can say plant like fern and mosses show alternation of generations. That is, in their life cycle a sexual (sporophyte) generation and sexual (gametophyte) generation alternate (B).

Correct Option:
B
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Question 30
A
cycad 
B
conifer 
C
fern 
D
none of the above 
Explanation.
Share Answer Confer belongs to the gymnosperms family. These are plant with naked seeds, they do not bear flowers. The seeds are borne on special structures called Cones (B)

Correct Option:
B
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