In a fertilised embryo sac, the haploid, diploid, and triploid structures are:

1.	Synergid, zygote, and primary endosperm nucleus
2.	Synergid, antipodal and polar nuclei
3.	Antipodal, synergid, and primary endosperm nucleus
4.	Synergid, polar nuclei and zygote.

While planning for an artificial hybridization programme involving dioecious plants, which of the following steps would not be relevant?
1. Bagging of the female flower
2. Dusting of pollen on the stigma
3. Emasculation
4. Collection of pollen

The phenomenon wherein, the ovary develops into a fruit without fertilisation is called:

Pollen grains lose viability within 30 minutes of their release in some members of:

Consider the following two statements regarding the integuments of an ovule:

Of the two statements:

1. Both I and II are true
2. Both I and II are false
3. Only I is true
4. Only II is true

The majority of water plants like water hyacinth and water lily are pollinated by:

Consider the following statements regarding floral primordium:

Of the two statements:

At what temperature pollens can be stored for years in liquid nitrogen?

In angiosperms, the mature female gametophyte is represented by:

A typical angiosperm embryosac, at maturity, is: