Sexual Reproduction In Flowering Plants - Botany - Biology Previous Year Questions

To achieve pollination, attractions and reward are required in

Match the types of endosperms given in Column I with examples given in Column II

Choose the correct sequence of events in pollenpistil interaction from the options given below:

i. Entry of pollen tube into synergid.

ii. Development of pollen tube.

iii. Deposition of pollen grains on the stigma.

iv. Release of contents from pollen tube.

How many nuclei migrate from each pole to the centre of developing female gametophyte to form secondary nucleus?

Bird pollinated flowers are usually __________

In an angiospermic embryo, upper swollen suspensor cell towards the micropyle, functions as_________.

Just before fertilization, the angiosperm's embryo sac contains ________ and ________ nuclei.

In a male gametophyte, ploidy of tube cell and a male gamete is __________

In sea grass, pollens are long, ribbon like and without exine exhibiting __________ pollination.

Just before fertilization, the angiosperm's embryo sac contains_________ and ___________nuclei.

In the given diagram of developing monocot embryo, identify the labels 'i', 'ii' and 'iii'.

How many meiotic and mitotic divisions respectively are required to form male gametophyte from pollen mother cell?

Which of the following plant shows 'Lever mechanism' of pollination?

Given below are two statements.

Statement I - Microspore is covered by two layered covering called sporoderm.

Statement II - Sporopollenin is not present in the region of germ pores in microspore.

In the light of above statements, Select the correct option given below:

Match the parts of anatropous ovule given in Column I with their ploidy given in Column II.

Germ pores of pollen grains are useful for

When a biotic agent is bat, the pollination is called

Which of the following pairs are haploid structures?