Question # 1

All ecosystem of the world join and makees:

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Biosphere

Heterosphere

Geosphere

Hydrosphere

When the antibiotics are not effective against viral infections, then it is called.

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Efficiency

Efficacy

Inefficiency

Resistance

Nitrobactor bacteria converts nitrites into:

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nitrogen

nitrates

urea

ammonia

Livingof Nitrogen bacteria in the roots nodules of Leguminous plant is an example of :

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Predation

Parasitism

Mutualism

Commensalism

Growing an entire new plant from part of the original plant is called.

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Budding

Regeneration

Fragmentation

Vegetative propagation

Which of these addictive drugs are also used as painkillers?

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Narcotics

Sedatives

Hallucinogens

All can be used

Example of hinge joints is:

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Elbow joint

Hip joint

Shoulder joint

Joints between the vertebrae

Conversion of Nitrates into nitrogen gas is called.

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Denitrification

Assimilation

Ammonification

Nitrogen fixtation

Male gametes are called:

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sperms

eggs

testes

ovaries

Is an Analgesic:

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Diazepam

Aspirine

Paracetamol

Both B and C

Uses in Electroplating:

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Glycerol

Ethanol

Nitric Acid

Formic Acid

In the structure of DNA Adenine of one nucleotide pairs with which of the nitrogenous base opposite nucleotide:

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Guanine

Cytosine

Thymine

Uracil

A purple flowered pea plant has the genotype PP, which of the following statements about this plant is FALSE.

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Its phenotype will be white flowers .

It has a homozygous dominant genotype.

When bred to a white flowered plant all offspring will be purple flowered.

All the gametes produced will have the same flower colour allele

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