Biology(General Knowledge > General Science ) Questions and Answers
Question 1. Ordinary table salt is sodium chloride. What is baking soda?
Potassium chloride
Potassium carbonate
Potassium hydroxide
Sodium bicarbonate
Explanation:-
Answer: Option D. -> Sodium bicarbonate
Question 2. Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to
angiosperms
gymnosperms
monocotyledons
dicotyledons
Explanation:-
Answer: Option B. -> gymnosperms
Question 3. Ozone hole refers to
hole in ozone layer
decrease in the ozone layer in troposphere
decrease in thickness of ozone layer in stratosphere
increase in the thickness of ozone layer in troposphere
Explanation:-
Answer: Option C. -> decrease in thickness of ozone layer in stratosphere
Question 4. Pollination is best defined as
transfer of pollen from anther to stigma
germination of pollen grains
growth of pollen tube in ovule
visiting flowers by insects
Explanation:-
Answer: Option A. -> transfer of pollen from anther to stigma
Question 5. Plants receive their nutrients mainly from
chlorophyll
atmosphere
light
soil
Explanation:-
Answer: Option D. -> soil
Question 6. Movement of cell against concentration gradient is called
osmosis
active transport
diffusion
passive transport
Explanation:-
Answer: Option B. -> active transport
Question 7. Photosynthesis generally takes place in which parts of the plant?
Leaf and other chloroplast bearing parts
steam and leaf
Roots and chloroplast bearing parts
Bark and leaf
Explanation:-
Answer: Option A. -> Leaf and other chloroplast bearing parts
Question 8. Most fish do not sink in water because of the presence of: I. swim bladder II. air bladder III. air sacs IV. air in spongy bones
I and II are correct
II and III are correct
III and IV are correct
I, II, III and IV are correct
Explanation:-
Answer: Option A. -> I and II are correct
Question 9. Plants synthesis protein from
starch
sugar
amino acids
fatty acids
Explanation:-
Answer: Option C. -> amino acids
Question 10. Plants absorb dissolved nitrates from soil and convert them into