M.C.Q [1M]

MCQ 11 Mark

XO type of sex determination is found in:

A
Elephant
B
Human beings
C
Dog
D
Grasshopper

Answer

Grasshopper
Explanation : In grasshopper, sex determination is of XO type, in which the males have only one X-chromosome besides the autosomes whereas females have a pair of X-chromosome.

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MCQ 21 Mark

Growth curve is normally:

A
C-shaped
B
J-shaped
C
S-shaped
D
V-shaped

Answer

S-shaped
Explanation : S-shaped

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MCQ 31 Mark

Name the spermicidal cream developed by Central Drug Research Institute (Lucknow), India.

A
Corovira
B
Sapindus
C
Spermacid
D
Consap

Answer

Consap
Explanation : Central drug research institute, Lucknow, India has developed a spermicidal cream called Consap. It has the capability of killing the sperm released during insemination.

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MCQ 41 Mark

In transgenics, expression of transgene in target tissue is determined by:

A
Enhances
B
Reporter
C
Transgene
D
Promoter

Answer

Reporter
Explanation : Reporter

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MCQ 51 Mark

Study the DNA profiles obtained as a result of DNA fingerprinting of a child X and three individuals 1, 2 and 3. Which one of the following options shows the possible parents of the child X?

A
Only individual 3
B
1 and 2
C
1 and 3
D
2 and 3

Answer

1 and 3
Explanation : 1 and 3 shows the possible parent of the child X.

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MCQ 61 Mark

Crop rotation is used by farmers to increase:

A
Soil fertility
B
Nitrogenous content of soil
C
Breeding
D
Organic content of soil

Answer

Soil fertility
Explanation : Crop rotation is the method of agriculture in which leguminous plants are grown between two cereal crops. The root nodule of this bacterium fix the atmospheric nitrogen and increase the fertility of the soil.

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MCQ 71 Mark

Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character

A
The trait under study could not be colour blindness
B
The female parent is heterozygous
C
The male parent is homozygous dominant
D
The parent could not have had a normal daughter for this character

Answer

The female parent is heterozygous
Explanation : Pedigree chart is used to detect the flow of particular trait in the family over several generations. The given charts indicate that the female parent is heterozygous in nature.

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MCQ 81 Mark

Flow of energy in our ecosystem takes place

A
only in one direction
B
possible in two directions
C
in three dimensions
D
may occur in multiple directions

Answer

only in one direction
Explanation : In the ecosystem, the flow of energy takes place in only one direction. The flow of energy takes place from producers to final consumers. The energy present in one trophic level never returns back to the producer.

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MCQ 91 Mark

What was the resultant found in the place marked E?

A
Glucose, fatty acids and lipids
B
Some fatty acids and organic acids
C
Some amino acids as glycine and alanine
D
Organic esters only

Answer

Some amino acids as glycine and alanine
Explanation : In Urey and Miller's experiment, the product formed after the continuous sparking in the mixture of gases at high temperature were some amino acids like glycine and alanine. Sugar and nitrogenous base were also obtained from the same set up by some other scientist.

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MCQ 101 Mark

A river with an inflow of domestic sewage rich in organic waste may result in: