Pre-Fertilization Events in Plants
Pre-Fertilization Events in Plants: Overview
This topic covers concepts such as Androecium, Anther, Pollen Sac, Tapetum, Endothecium, Pollen Mother Cell, Microsporogenesis, Spore Tetrads, Pollen Grain, Pollinium, Palynology, Pollen Architecture, Sporopollenin, Germ Pore, and Pollenkitt.
Important Questions on Pre-Fertilization Events in Plants
In the given figure of embryo sac, choose the option that is correctly showing the parts (1), (2), (3) and (4).
The process that is functionally similar to cross pollination and genetically similar to self-pollination is called:
Which of the following are adaptive floral characteristics of a wind pollinated plant?
Which of the following is the device by which cross-pollination is encouraged in nature?
The agents of cross-pollination are
Which of the following represents the persistant remains of nucellus ?
Which of the following plants are water pollinated?
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 |
Which of the following flowers undergo autogamy:
The process of development of pollen mother cell into a mature pollen grain includes:
In which of the following plants, their flowers would favour cross pollination:
The megaspores are formed from megaspore mother cell that are produced in which of the following region of ovule:
The pollen tube usually enters the embryo sac
Pollen grains are able to withstand extremes of temperature and dessication because their exine is composed of
Statement-I: Pollen mother cells (PMCs) are the first male gametophytic cells.
Statement-II: Each PMC gives rise to two pollens.
Assertion : If pollen mother cells has 42 chromosomes, the pollen has only 21 chromosomes.
Reason : Pollens are formed after meiosis in pollen mother cell.
Find the odd one out.
Which of the following pairs has haploid structures?
Embryo sac occurs in
Pollination occurs in
