Sexual Reproduction in Plants
Sexual Reproduction in Plants: Overview
This topic covers concepts, such as, Sexual Reproduction,Flower,Structure of Flower etc.
Important Questions on Sexual Reproduction in Plants
Which of the following represents the persistant remains of nucellus ?
Match the following:
| Column-I | Column-II | ||
| (a) | Coleorhiza | (i) | Birth cord |
| (b) | Umbilical cord | (ii) | The outer wall of a spore or pollen grain |
| (c) | Germ pores | (iii) | A sheath protecting the root of a germinating grass or cereal grain |
The process of development of pollen mother cell into a mature pollen grain includes:
The megaspores are formed from megaspore mother cell that are produced in which of the following region of ovule:
Pollen grains are able to withstand extremes of temperature and dessication because their exine is composed of
Which of the following statements is true?
Statement-I: Pollen mother cells (PMCs) are the first male gametophytic cells.
Statement-II: Each PMC gives rise to two pollens.
Statement I: The megaspore mother cell divides mitotically to produce four spores.
Statement II: Megaspore mother cells are diploid and megaspore is haploid.
Assertion : If pollen mother cells has 42 chromosomes, the pollen has only 21 chromosomes.
Reason : Pollens are formed after meiosis in pollen mother cell.
The generative cell is destroyed by laser but a normal pollen tube is still formed because
Find the odd one out.
Male gametophyte of angiosperms/ monocots is
It is very difficult to clearly define juvenile, reproductive and senescent phases in:
Organisms with relatively simple body organisation commonly reproduce through asexual means but shifts to sexual reproduction:
Which of the following sequence is correct for the development of embryo sac?
One sporogenous cell produce how many number of microspore tetrad?
In angiosperms, various stages of reductional division can best be studied in:
Number of gamete formed by 5 Pollen Mother Cell is
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem.
Reason (R): Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves.
In the light of the above statements, choose the correct answer from the options given below:
Innermost layer of anther wall whose cells nourish the developing pollen grain is
