Question

The germination of pollen grains on stigma is ___________ type
A. In-vitro
B. In-vivo
C. In-situ
D. Ex-situ

Answer 1

Hint: Germination is the cycle by which a creature develops from seed or comparative structure. The term is applied to the growing of a seedling from a seed of an angiosperm or gymnosperm, the development of a sporeling from a spore, for example, the spores of organisms, greeneries, microbes, and the development of the pollen tube from the pollen grain of a seed plant.

Complete answer:
In vivo alludes when examination or work is finished with or inside a whole, living creature. So, germination of pollen grains on stigma is an in-vivo type. Thus, option B is correct.
In vitro is utilized to depict work that is performed outside of a living life form. So, option A is incorrect.
In-situ implies being in the first position; not having been moved. It is with areas within the natural habitat. So, option C is incorrect.
Ex-situ implies offsite preservation. It is nearby protection or the preservation of hereditary assets in characteristic populaces of plant or creature species. So, option D is incorrect.

Hence, option B) is the correct answer.

Note: In flowering plants, in any case, the ovules are contained inside an empty organ called the pistil, and the pollen is kept on the pistil's open surface, the disgrace.
The germination of pollen grains starts with the retention of water and supplements and the pollen grain delivers a minuscule pollen tube through the style to the ovary.
The tube nucleus expands and emerges from the pollen grain through one of the germ pores to frame a pollen tube.
The tube nucleus drops to the tip of the pollen tube.