Development of sporophyte/embryo from gametophytic tissue without fusion of gametes is?

Karyogamy is?

Number of prothallial cells present in the male gametophyte of angiosperms is?

A primitive massive nucellus occurs in some ovules. The condition is called.

If position of ovary is below sepals petals and stamens, the flowers is called 

Number of prothallial cells present in male gametophyte of flowering plant is?

Which one forms the male gametes in angiosperms?

As compared to oosphere, the male gamete of angiosperms is?

Plants of this group are diploid and well adapted to extreme conditions.They grow bearing sporophylls in compact structures called cones. The group-in reference is

Number of gametes produced by a male gametophyte of flowering plant is?

Male gametophyte of angiosperms/ monocots is?

Number of male gametes formed by $16$ microspore mother cells is?

Xenia and metaxenia are related to.

An angiospermic male plant with $24$ chromosomes in its pollen mother cells is crossed with female plant having $24$ chromosomes in its root cells. What would be chromosome number of embryo and endosperm respectively after the cross.

Sporopollenin occurs in.

In angiosperms the functional megaspore in the linear tetrad is generally.

Egg of female gametophyte is accompanied by.

Fore-runner of male gamete is?

A diploid male angiospermic plant is crossed with tetraploid female plant. Endosperm of seed will be.

What is not a post fertilization event?

The filiform apparatus is present in ________.

Assertion : Most evolutionary trees place information about the pattern of relationship among organisms on the vertical axis and information about time on the horizontal axis.

Reason : An evolutionary tree depicts the pattern of relationships among parents and their offsprings.