Latest Biology General Knowledge(GK) Questions and answers

1 .

Radioactivity is a phenomenon of the spontaneous emission of

protons (alpha particles)

electrons (beta particles)

gamma rays (short wave electromagnetic waves)

All of the above

Correct Answer : All of the above

2 .

Photosynthesis takes place faster in

yellow light

white light

red light

darkness

Correct Answer : white light

3 .

Plants are killed in winter by frost

because of desiccation and mechanical damage to the tissues

because no photosynthesis takes place at such low temperature

because respiration ceases at such low temperature

because there is no transpiration

Correct Answer :

4 .

Prokaryotic cells lack

nucleolus

nuclear membrane

membrane bound by organelles

All of these

Correct Answer : All of these

5 .

Number of chromosomes in Down's syndrome is

Correct Answer : 47

6 .

Plant development is influenced by

quality of light only

quality and quantity of light

quality and duration of light

quality, quantity and duration of light

Correct Answer : quality, quantity and duration of light

7 .

Rain water helps to increase the ____ to some extent.

phosphorous contents

nitrogen contents

calcium contents

potash contents

Correct Answer : calcium contents

8 .

Most highly intelligent mammals are

whales

dolphins

elephants

kangaroos

Correct Answer : dolphins

9 .

Mumps is a disease caused by

virus

fungus

bacterium

None of these

Correct Answer : virus

10 .

Process of cell division can take place by

heterosis

fusion

mitosis

None of these

Correct Answer : mitosis

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