Biology | Study Mode

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Question 41
A
Inhaled air contains more carbon dioxide that exhaled air
B
Exhaled air contains more carbon dioxide than inhaled air
C
Exhaled air is warm and contains water vapour
D
Movement of diaphragm aids respiration.
Explanation.
Human being inhaled air from the environment, the larger part of the air is oxygen and after different process (respiration), human being exhale gas which is majorly carbon dioxide (A).

Correct Option:
A
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Question 42
A

Curd

B

Chyme

C

Glycogen

D

Roughage

Explanation.

The wall of the stomach are muscular and regular peristaltic movement chum up the food, mixing it thoroughly with the gastric juice. By the time it is ready to leave the stomach the food looks like a watery paste called CHYME (B).


Correct Option:
B
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Question 43
A
are all aquatic plants
B
are grow in deserts
C
are seedless plants
D
all produce colorless flowers
Explanation.
They are seedless plants (C).

Correct Option:
C
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Question 44
A
Excretes waste products
B
Is mainly used for respiration
C
Is used to store starch
D
Is suspended by cytoplasmic strands
Explanation.
Pyrenoid is for starch storage (C).

Correct Option:
C
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Question 45
A
Can neither reproduce asexually nor sexually
B
Can not survive in their respective environments
C
Do not posses characteristics transmutable from one generation to the next
D
Can neither respire nor excretes.
Explanation.
Although they have no means of propelling themselves they can reproduce and have characteristics which are transmitted form one generation to the next. They can only replicate inside the living host (B).

Correct Option:
B
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Question 46
A
Quill and filoplumes
B
Down and filoplumes
C
Covert and down
D
Quill and covert
Explanation.
The possession of feather is the most obvious difference between birds and other vertebrates. At the base of the vane, the barbules do not interlock and the barbs form a small tuft called the after shaft. Convert and down possession shaft (C).

Correct Option:
C
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Question 47
A
Refracting media
B
Conjunctiva
C
Cornea
D
Sciara
E
choroid coat
Explanation.
The middle layer (choroid coat). Choroid Is pigmented and contain many capillaries and its the nutritive layer of the eye

Correct Option:
E
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Question 48
A
Bowmans Capsule
B
Pelvis
C
Loop of Henle
D
Proximal Convulated Tubule
Explanation.
It was found that the fluid in the capsular space has almost exactly the same composition as blood plasma means the plasma proteins. It seems that the capsular fluid is formed by a process of ultra filtration from the glomerular capillarus (i.e Ultra filtration takes place in the Bowmans capsule) (A)

Correct Option:
A
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Question 49
A
Olearanon
B
Ulna
C
Tibia
D
Humerus
Explanation.
Ulna and Radius articulates at the elbow with the humerous at the fore limbs. Tibia belongs to the hind limbs (C).

Correct Option:
C
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Question 50
A
Protandry
B
Epigyny
C
Hypogyny
D
Protogyny
Explanation.
In protandry, the stamens (Anthers ) ripen first and shed their pollen before the stigma Is matured (A).

Correct Option:
A

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