SSC CGL 2015: BIOLOGY QUIZ

1.Ozone hole refers to

A.hole in ozone layer

B.decrease in the ozone layer in troposphere

C.decrease in thickness of ozone layer in stratosphere

D.increase in the thickness of ozone layer in troposphere

2.Plants receive their nutrients mainly from

A.chlorophyll

B.atmosphere

C.light

D.soil

3.Movement of cell against concentration gradient is called

A.osmosis

B.active transport

C.diffusion

D.passive transport

4.Photosynthesis generally takes place in which parts of the plant?

A.Leaf and other chloroplast bearing parts

B.stem and leaf

C.Roots and chloroplast bearing parts

D.Bark and leaf

5.Plants synthesis protein from

A.starch

B.sugar

C.amino acids

D.fatty acids

6.Plants absorb dissolved nitrates from soil and convert them into

A.free nitrogen

B.urea

C.ammonia

D.proteins

7.Plants absorb most part of water needed by them through their

A.embryonic zone

B.growing point

C.root hairs

D.zone of elongation

8.Photo-oxidation is

A.photorespiration

B.photolysis

C.light and oxygen induced breakdown

D.All of the above

9.Most highly intelligent mammals are

A.whales

B.dolphins

C.elephants

D.kangaroos

10.Plant development is influenced by

A.quality of light only

B.quality and quantity of light

C.quality and duration of light

D.quality, quantity and duration of light

ANSWER KEY:
1-(c)
2-(d)
3-(b)
4-(a)
5-(c)
6-(a)
7-(c)
8-(d)
9-(b)

10-(d)