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.Pollination is best defined as
A.     transfer of pollen from anther to stigma
B.     germination of pollen grains
C.     growth of pollen tube in ovule
D.     visiting flowers by insects

3.Movement of cell against concentration gradient is called
A.     osmosis
B.     active transport
C.     diffusion
D.     passive transport

4.Plants receive their nutrients mainly from
A.     chlorophyll   
B.     atmosphere
C.     light   
D.     soil

5.Photosynthesis generally takes place in which parts of the plant?
A.     Leaf and other chloroplast bearing parts
B.     steam and leaf
C.     Roots and chloroplast bearing parts
D.     Bark and leaf

6.Plants synthesis protein from
A.     starch
B.     sugar
C.     amino acids
D.     fatty acids

7.Plants synthesis protein from
A.     starch
B.     sugar
C.     amino acids
D.     fatty acids

8. One of the following is not a function of bones.
A.     Place for muscle attachment
B.     Protection of vital organs
C.     Secretion of hormones for calcium regulation in blood and bones
D.     Production of blood corpuscles

9.Plants absorb most part of water needed by them through their
A.     embryonic zone
B.     growing point
C.     root hairs
D.     zone of elongation

10. Photo-oxidation is
A.     photo-respiration
B.     photolysis
C.     light and oxygen induced breakdown
D.     All of the above

Answer key:1 = C,2=A,3=B,4=D,5=A,6=C,7=A,8=C,9=C,10=D