STD 11 - 1. The living world — NEET STD 11 Science — Question

Plants, bacteria, fungi and animals whose genes have been altered by manipulation are called

Under conditions of constant illumination, the compensation period for a whole aquarium would be of infinite length when

Restriction endonucleases are enzymes which

The function of bulliform cells is to

Select the plant group which is heterosporous

Which of the following statements are correct for gibberellins ?
(i) Spraying juvenile conifers with GAs hastens the maturity period, thus leading to early seed production.
(ii) Promotes bolting in beet, cabbages and many plants with rosette habit.
(iii) It helps to produce new leaves, chloroplasts in leaves, lateral shoot growth and adventitious shoot formation.
(iv) Their ability to cause an increase in length of axis is used to increase the length of grapes stalks.
(v) It help to initiate rooting in stem cuttings.
(vi) It promote flowering eg. in pineapples.

Albuminous seeds store their reserve food mainly in

Given below are two statements :
Statement I:
Ethylene is largely an inhibitor of growth activities
Statement II:
Ethylene enhances the photosynthesis rate during ripening of the fruits this rise in rate of photosynthesis is called photosynthesis climactic.
In the light of the above statements, choose the most appropriate answer from the options given below :