Advertisements
Advertisements
प्रश्न
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
What is the function of the part labelled '4'?
उत्तर
The function of part '4' (tube nucleus) is to direct the growth of the pollen tube towards the ovary.
APPEARS IN
संबंधित प्रश्न
Double fertilization is reported in plants of both, castor and groundnut. However, the mature seeds of groundnut are non-albuminous and castor are albuminous. Explain the post fertilization events that are responsible for it.
What is triple fusion?
Explain the events up to double fertilisation after the pollen tube enters one of the synergids in an ovule of an angiosperm.
Give one word/term for the following:
When pollen grains of a flower reach the stigma of the same flower.
Describe the process of double fertilization.
Give any four points of significance of double fertilization.
Size of pollen grain in Myosotis
The correct order of haploid, diploid, and triploid structure in fertilized embryo sac is
Fusion of one of the male gametes with egg nucleus is referred to as ______.
The total number of nuclei involved in double fertilisation in angiospersm are ______.
