Fertilization in Plants
Fertilization in Plants: Overview
This topic covers concepts such as Post Pollination Changes in Plants, Pollen Tube Germination, Double Fertilization, and Triple Fusion.
Important Questions on Fertilization in Plants
Identify the correct option with which the part shown in the diagram below can be associated:
Double fertilization involves
The generative cell is destroyed by laser but a normal pollen tube is still formed because
Double fertilization and triple fusion were discovered by
Total number of meiotic divisions required for forming 100 zygotes/100 grains of wheat is
Entry of pollen tube through micropyle is
Which cell of the female gametophyte is involved in the formation of primary endosperm nucleus (PEN) after fertilization ?
The additional nuclear ploidy levels found in a diploid angiosperm species in full bloom compared to its vegetative stage are
An angiosperm was identified with its endosperm of . Assuming that this is a self-pollinating species, which one of the following is the correct ploidy of the parent?
Fill up the blanks with suitable words
The ability of the pistil to recognise pollen is dependent on ______ components and ________ guide the entry of pollentube. This study leads to help ______ in getting _________ even in _____
A Chemicals
B. Plant breeders
C. hybrids
D. Incompatible pollination
E. Synergids
Mesogamy is the entry of pollen tube into the ovule through
Number of gametes participates in triple fusion, and double fertilisation respectively are
Which of the following scientists is credited with the discovery of double fertilisation in Fritillaria and Lilium?
Which of the following is incorrect about double fertilization?
Read the following statements about sexual reproduction in angiosperms. How many of them are correct?
a. The number of middle layers in anther generally vary from 1-6
b. The pollen tube many enter the ovule from micropyle, chalaza or funiculus
c. Each ovule contains 8 nucleate, haploid embryosac after mitotic divisions in megaspore mother cell
d. If pollen grain of a flower falls on the stigma of another flower on the same plant, it may be referred to as self-pollination
e. Insects are often attracted by the odour of flowers rather than colour
f. Outcrossing increases genetic variability
One seed of Citrus has many diploid embryos formed without the fusion of gametes. These embryos called as 'apomictic embryos' arises from:
Primary endosperm nucleus
(a) is formed in angiosperms only
(b) is formed by triple fusion
(c) is triploid in nature
Which of the following structures degenerate after fertilization?
An event unique to angiosperms is
In a fertilised embryo sac, the haploid, diploid and triploid structures are
