plants that grow best in moist habitat and well aerated soil are called.
A= mesophytes
B= sciophytes
C= good autothrophs
D=none of the above.
Answers
free floating hydrophytes
(b) submerged hydrophytes
(c) rooted and floating hydrophytes
(d) halophytes
Answer: (c) rooted and floating hydrophytes
2. Among the following which is not a characteristic of hydrophyte?
(a) abundant air spaces and air chambers
(b) plentiful xylem and sclerenchyma
(c) leaves having stomata only on the upper side or none
(d) poor fruit development
Answer: (b) plentiful xylem and sclerenchyma
3. Hydrophytes have
(a) well developed roots
(b) well developed stomata
(c) less mechanical system as well as feebly developed vascular system
(d) none
Answer: (c) less mechanical system as well as feebly developed vascular system
4. Plants growing near sea shore will usually have xerophytic characters like thick leaves because
(a) there is plenty of water in the soil
(b) there is too high a concentration of salts for the plants to absorb sufficient water from soil
(c) light available to the plants is insufficient
(d) the soil is physically dry
Answer: (b) there is too high a concentration of salts for the plants to absorb sufficient water from soil
Plants such as the commercially-important corn, wheat, oats, barley and rice require nitrogen compounds to be present in the soil in which they grow. Carbon and oxygen are absorbed from the air while other nutrients are absorbed from the soil.
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