What is the role of NAD+ in cellular respiration? Option 1 : It functions as an electron carrierOption 2 : It functions as an enzymeOption 3 : It is the final electron acceptor for anaerobic respirationOption 4 : It is a nucleotide source for ATP synthesis

Oxygen is not produced during photosynthesis by Option 1 : CharaOption 2 : Green sulphur bacteriaOption 3 : CycasOption 4 : Nostoc

Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other? Option 1 : ViolaOption 2 : BananaOption 3 : HydrillaOption 4 : Yucca

Double fertilization is Option 1 : Fusion of two male gametes of a pollen tube with two different eggsOption 2 : Fusion of two male gametes with one eggOption 3 : Fusion of one male gamete with two polar nucleiOption 4 : Syngamy and triple fusion

Stomoata in grass leaf are Option 1 : Kidney shapedOption 2 : Dumb-bell shapedOption 3 : Barrel shapedOption 4 : Rectangular

Pollen grains can be stored for several years in liquid nitrogen having a temperature of Option 1 : -120°COption 2 : -160°COption 3 : -80°COption 4 : -196°C

Option 1 :ZygotenOption 2 : PachyteneOption 3 : DiploteneOption 4 : Diakinesis Correct answer is Option 3.

The two functional groups characteristic of sugar are Option 1 : Hydroxyl and methyl Option 2 : Carbonyl and methyl Option 3 : Carbonyl and hydroxyl Option 4 : Carbonyl and phosphate

Which of the following is true for nucleolus? Option 1 : Larger nucleoli are present in dividing cells. Option 2 : It is a site for active ribosomal RNA synthesis. Option 3 : It takes part in spindle formation. Option 4 : It is a membrane-bound structure.

Stomatal movement is not affect by Option 1 : O2 concentration Option 2 : Temperature Option 3 : CO2 concentration Option 4 : Light

Which of the following is not a product of light reaction of photosynthesis? Option 1 : ATP Option 2 : NADPH Option 3 : NADH Option 4 : Oxygen

Which among the following is not a prokaryote? Option 1 : Saccharomyces Option 2 : Nostoc Option 3 : Mycobacterium Option 4 : Oscillatoria