NEET Biology online test,stragies enhancement food production mcqs

Strategies for Enhancement in Food Production Test-8

Question No:1

Assertion: Inbreeding increases heterozygosity.
Reason: Continous inbreeding usually enhance fertility and even productivity.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:2

Assertion: Mule is an examle of inter specific hybrid.
Reason: Mule produce by cross between male donkey and female horse.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:3

Assertion: Mung beans are resistant to yellow mosaic virus.
Reason: Resistance is induced by mutation.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:4

Assertion: Shoot-tip culture is used to raise virus free clones.
Reason: Other explants can equally give rise to virus free clones.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:5

Assertion: Somatic hybridisation is fusion of potoplast of two different varieties of plants.
Reason: Somatic hybridisation is type of sexual reproduction.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:6

Assertion: Hisardale is new breed of sheep.
Reason: Developed by crossing between Marino ewes and Bikaneri rams.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:7

Assertion: Multiplication of plants in invitro condition from the explants is called micro propagation.
Reason: Micro propagation occurs either in the form of multiple shoot formation or somatic embryos.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:8

Assertion: Hairy leaves in several plants are associated with resistance to insect pests.
Reason: Nectar less cotton varieties do not attract bollworms.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:9

Assertion: Beeswax is an animal product produced by honeybee.
Reason: Honey contains only sugar, nothing else.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:10

Assertion: Cattle breeds can be improved by superovulaton and embryo transplantaion.
Reason: Superovulation in high milk-yielding cows is induced by hormonal injection.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:11

Black (stem) rust of wheat is caused by

[A] Alternaria solani
[B] Ustilago nuda
[C] Puccinia graminis
[D] Xanthomonas oryzae



Question No:12

Breeding of crops with high levels of minerals, vitamins and proteins is called

[A] Somatic hybridization
[B] Biofortification
[C] Bio magnification
[D] Micro propagation



Question No:13

An improved variety of transgenic basmati rice

[A] Does not require chemical fertilizers and growth hormones
[B] Gives high yield and is rich in vitamin-A
[C] Is completely resistant to all insect pests and diseases of paddy
[D] Gives high yield but has no characteristic aroma



Question No:14

‘ Jaya’ and ‘Rama’ developed for green revolution in India are the varieties of:

[A] Rice
[B] Wheat
[C] Bajra
[D] Maize