Q.21)-Plant have ____ while animals lack it.
- starch
- cellulose
- protein
- fat
Q.22)-Pigmentation of skin is due to
- lymphocytes
- monocytes
- leucocytes
- melanocytes
Q.23)-Night blindness is cause by lack of which vitamin?
- Vitamin A
- Vitamin B
- Vitamin C
- Vitamin D
Q.24)-Our major foods, fibres, spices, fruits and beverage crops are
- flowering plants
- gymnosperms plants
- pteridophytes
- bryophytes
Q.25)-Movements due to light are shown by
- flowering plants
- lower plants
- all land plants
- all the plants
Q.26)-Rain water helps to increase the ____ to some extent.
- phosphorous contents
- nitrogen contents
- calcium contents
- potash contents
Q.27)-Plants are killed in winter by frost
- because of desiccation and mechanical damage to the tissues
- because no photosynthesis takes place at such low temperature
- because respiration ceases at such low temperature
- because there is no transpiration
Q.28)-Pulses are a good source of
- carbohydrates
- fats
- proteins
- vitamins
Q.29)-Nymph is the name of young one of
- butterfly
- beetle
- housefly
- cockroach
Q.30)-Plants that grow under average temperature and moisture are called
- halophytes
- hydrophytes
- mesophytes
- xerophytes