Blood is carried towards the heart by __________?

A: Arteries

B: Capillaries

C: Veins

D: none of these

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Veins

The branch of biology which deals with the study of social behavior and communal life of human beings living in any environment is called ?

A: Environmental biology

B: Social biology

C: Human biology

D: Both b and c

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Social biology

__________ is essential for the formation of hemoglobin.

A: Calcium

B: Iron

C: Water

D: Carbohydrates

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Iron

About __________ of the body weight of a mammal is water ?

A: 60%

B: 65%

C: 70%

D: 75%

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70%

People living in high altitudes (like mountains) usually have a _________?

A: smaller number of Red Blood Cells

B: larger number of Red Blood Cells

C: smaller number of White Blood Cells

D: larger number of White Blood Cells

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larger number of Red Blood Cells

Which character differentiates living things from non-living organisms?

A: They live in the same ecosystem.

B: They are highly organized and complex made of one or more cells and contain genetic material

C: They are acted upon by the same environment

D: Both a and b

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They are highly organized and complex made of one or more cells and contain genetic material

Which Vitamin is needed for the formation of a light-sensitive pigment in the retina.

A: Vitamin A

B: Vitamin C

C: Vitamin D

D: B complex

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Vitamin A

Members of one species inhabiting the same are form__________?

A: Species

B: Community

C: Ecosystem

D: Population

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Population

The average internal temperature of human body is __________?

A: 35 oC

B: 36 oC

C: 37 oC

D: 38 oC

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37 oC

On the basis of collected facts and ¬gures, a scientist formulates a factitive statement called:

A: Observation

B: Research work

C: Hypothesis

D: Inductive Reasoning

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Hypothesis

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