Q.1)-Plants receive their nutrients mainly from
- chlorophyll
- atmosphere
- light
- soil
Q.2)-Oxygen in our blood is transported by a protein named
- haemoglobin
- keratin
- collagen
- myoglobin
Q.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
Q.4)-Photosynthesis generally takes place in which parts of the plant?
- Leaf and other chloroplast bearing parts
- stem and leaf
- Roots and chloroplast bearing parts
- Bark and leaf
Q.5)-Plants synthesis protein from
- starch
- sugar
- amino acids
- fatty acids
Q.6)-Plants absorb dissolved nitrates from soil and convert them into
- free nitrogen
- urea
- ammonia
- proteins
Q.7)-Plants absorb most part of water needed by them through their
- embryonic zone
- growing point
- root hairs
- zone of elongation
Q.8)-Photo-oxidation is
- photorespiration
- photolysis
- light and oxygen induced breakdown
- All of the above
Q.9)-Process of cell division can take place by
- heterosis
- fusion
- mitosis
- None of these
Q.10)-Most highly intelligent mammals are
- whales
- dolphins
- elephants
- kangaroos