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The image distance from the eye lens in the normal eye when we increase the distance of an object from the eye
Option: 1 increases.
Option: 2 decreases.
Option: 3 remains unchanged.
Option: 4 depends on the size of the eyeball.

The image distance from the eye lens in the normal eye when we increase the distance of an object from the eye remains unchanged.

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Safeer PP

The sky appears dark to passengers flying at very high altitudes mainly because :
 
Option: 1 Scattering of light is not enough at such heights.
 
Option: 2 There is no atmosphere at great heights.
 
Option: 3 The size of molecules is smaller than the wavelength of visible light.
 
Option: 4 The light gets scattered towards the earth.

The sky appears dark to passengers flying at very high altitudes mainly because the Scattering of light is not enough at such height. 

Hence option A is correct 

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Safeer PP

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Person suffering from cataract has
Option: 1 elongated eyeball
Option: 2 excessive curvature of eye lens
Option: 3 weakened ciliary muscles
Option: 4 opaque eye lens

A Person suffering from cataract has an Opaque eye lens

Hence option D is correct 

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Safeer PP

Consider the following reasons for the reddish appearance of the sun at the sunrise or the sunset : A. Light from the sun near the horizon passes through thinner layers of air. B. Light from the sun covers larger distance of the earth’s atmosphere before reaching our eyes. C. Near the horizon, most of the blue light and shorter wavelengths are scattered away by the particles. D. Light from the sun near the horizon passes through thicker layers of air. The correct reasons are  
 

The correct reasons are B,C and D

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Safeer PP

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The enzyme enterkinase helps in conversion of:
Option: 1 protein into polypeptide
Option: 2 trypsinogen into trypsin 
Option: 3 caeinogen into casein
Option: 4 pepsinogen into pepsin  

The enzyme enterokinase helps in the conversion of trypsinogen into trypsin. The enzyme trypsin further helps in the breakdown of proteins for the process of digestion.

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Posted by

Ritika Jonwal

Goblet cells of the alimentary canal are modified from:
Option: 1 Squamous epithelial cells
Option: 2 Columnar epithelial cells
Option: 3 Chondrocytes
Option: 4 Compound epithelial cells  

Goblet cells of the alimentary canal are modified from columnar epithelial cells. 

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Ritika Jonwal

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Match of the following columns and select the correct otion.

Column I Column II
(a) Clostridium butylicum (i) Cyclosporin - A
(b) Trichoderma polysprom (ii) Butyric acid
(c) Monasucus purpureus (iii) Citric acid
(d) Aspergillus niger (iv) Blood cholestrol lowering agent


Option: 1

(a) (b) (c) (d)
iii iv ii i


Option: 2

(a) (b) (c) (d)
ii i iv iii


Option: 3

(a) (b) (c) (d)
i ii iv iii


Option: 4

(a) (b) (c) (d)
iv iii ii i

 

a. Clostridium butylicum - Butyric acid

b. Trichoderma polysprom - Cyclosporin - A

c. Monasucus purpureus -  Blood cholestrol lowering agent

d. Aspergillus niger - Citric acid

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Posted by

Ritika Jonwal

Match the following columns and select the correct option.

Column - I Column -II
(a) Placenta (i) Androgens
(b) Zona pellucida (ii) Human Chlorinic Gonadotropin (hCG)
(c) Bulbo-urethral gland (iii) Layer of the ovum
(d) Leydig cells (iv) Lubrication of the Penis


Option: 1

(a) (b) (c) (d)
iv iii i ii


Option: 2

(a) (b) (c) (d)
i iv ii iii


Option: 3

(a) (b) (c) (d)
iii ii iv i


Option: 4

(a) (b) (c) (d)
ii iii iv i

 

a. Placenta - Human Chorionic Gonadotropin (hCG)

b. Zona pellucida - Layer of the ovum

c. Bulbourethral glands - Lubrication of the Penis

d. Leydig cells - Androgens

Hence, the correct option is (d).

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Ritika Jonwal

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Which of the following hormone levels will cause the release of the ovum (ovulation) from the graffian follicle?
Option: 1 The high concentration of estrogen
Option: 2 The high concentration of progesterone
Option: 3 low concentration of LH
Option: 4 low concentration of FSH  

The high concentration of Estrogen will suppress the release of FSH through which the ovary won't be able to  grow to become a fully mature Graafian follicle 

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Ritika Jonwal

match the following columns and select the correct option

Column -I Column -II
(a) Eosinophils (i) Immune response
(b) basophils (ii) Phagocytes
(c) Neutrophils (iii) Release histamine, destructive enzymes
(d) Lymphocytes (iv) Release granules containing histamine


Option: 1

(a) (b) (c) (d)
iii iv ii i


Option: 2

(a) (b) (c) (d)
iv i ii iii


Option: 3

(a) (b) (c) (d)
i ii iv iii


Option: 4

(a) (b) (c) (d)
ii i iii iv

 

a. Eosinophils - release histamine, destructive enzymes

b. Basophils - release granules containing histamine

c. Neutrophils - Phagocytes

d. Lymphocytes -  Immune response

Hence, the correct option is (a).

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Posted by

Ritika Jonwal

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