STD 12 - 5. molecular basis of inheritance — NEET STD 11 Science — Question

Which one of the following sets of structure in Pinus belong entirely to the gametophytic generation

Deposition of new materials inside the cell wall of cells starts in

Which of the following supports a dense population of plankton and littoral vegetation

Which of the following statements are not true for microsporogenesis ?
(i) The centre of each microsporangium occupied by sporogenous tissue.
(ii) The cells of the sporogenous tissue undergo meiotic divisions to form microspore tetrads.
(iii) Each cell of the sporogenous tissue is capable of giving rise to a microspore tetrad.
(iv) Each microspore is a potential pollen or microspore mother cell.
(v) As the anthers mature and dehydrate, the microspores dissociate from each other and develop into pollen grains.
(vi) Inside each microsporangium several thousands of microspores or pollen grains are formed that are released with the dehiscence of anther.

The process of laterization results into

In a genetic engineering experiment, restriction enzymes can be used for

The store house for all biological information is:

The organisms found in boiling thermal springs are

The two polypeptides of human insulin are linked together by