Question # 1

Genes consist of:

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DNA

RNA

mRNA

Protein

conversion of the nitrogen gas into nitrates is called.

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Denitrification

Nitrogen fixation

Assimilation

Ammonification

Which of these germinate by epigeal germination?

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Pea

Maize

Beans

Coconut

DNA wraps around histone protein and forms-rounded structures called as

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Nucleosomes

Ribosomes

Lysosomes

mRNA

Abiotic component of ecosystem is:

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Producers

Herbivores

Camivore

Oxygen

These are unit of inheritance :

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Genes

Alleles

Phenotype

Genotype

it is example of secondary consumer.

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Cattle

Snake

Lion

Frog

Which is favourable variation in moths after industrial revolution?

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Light colour

Medium colour

Dark colour

None of these

Cranial bones are:

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8

9

10

22

Which is not an advantage of grafting?

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The graft is identical to the parent plant.

Grafting allows the propagation of seedless fruits.

The graft combines the characteristics of two plants.

Grafting may allow for the faster production of desirable fruits.

No. of hydrogen bonds between Adenine and thymine is:

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2

3

4

5

The treatment through genes is called.

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Gene therapy

Chemo therapy

Radio therapy

Physio therapy

The materials flow forms one trophic level to the next by means of:

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food chains

food webs

energy pyramids

both A and B

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