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What is bagging technique? How is it helpful in a plant breeding programme?
The bagging technique is a method used in plant breeding to ensure that only desired pollen fertilizes the stigma. This is done by covering the emasculated flower with a polybag or butter paper. The anthers of the flower are removed ...
What is self-incompatibility? Why does self-pollination not lead to seed formation in self-incompatible species?
Self-incompatibility can be defined as a situation where the pollen from one flower is unable to fertilize the ovules of that same flower or any other flower on the same plant. This mechanism is thought to help promote outcrossing and ...
Mention two strategies evolved to prevent self-pollination in flowers.
Dichogamy and self-incompatibility are the two natural strategies evolved by plants to prevent self-fertilization. Self-pollination is the transfer of pollen from the male organ or stamen of a flower to the female organ or pistil of the same flower. It ...
What are chasmogamous flowers? Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.
Chasmogamous flowers are those that have their petals open and the reproductive organs exposed. The name comes from the Greek words for “open marriage”. These flowers are typically showy and brightly colored in order to attract pollinators. These flowers undergo ...
With a neat diagram, explain the 7-celled, 8 nucleate nature of female gametophyte
A female gametophyte is a haploid cell that develops from the megagametophyte in a plant ovule. It contains the genetic material necessary for the development of a new plant. The male gametophyte, which is also a haploid, develops from the ...
What is meant by monosporic development of female gametophyte?
A female gametophyte is a haploid structure in plants that produce eggs. It is found in the ovary of the flower and develops from the megagametophyte. The male gametophyte, which produces sperm, is much smaller and does not have a ...
With a neat, labelled diagram, describe the parts of a typical angiosperm ovule
An angiosperm ovule is a reproductive structure in angiosperms or flowering plants. It is the female organ that produces the egg cell. The ovule contains the nucleus and other cellular components necessary for fertilization and early embryo development. Contents1 Parts ...
Arrange the following terms in correct developmental sequence: Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes
The correct developmental sequence is : Sporogenous tissue pollen mother cell microspore tetrad pollen grain male gamete. Contents1 Developmental Sequence Explanation1.1 The Process1.2 Seed Formation1.3 Summary Developmental Sequence Explanation The Process This is how the developmental sequence is in flowers: ...
Differentiate between microsporogenesis and megasporogenesis. Which type of cell division occurs during these events? Name the structures formed at the end of these two events.
What is microsporogenesis? Microsporogenesis is the process of sperm production in plants. It occurs in the anthers of a flower and results in the formation of pollen grains. This process is important for the reproduction of plants. It occurs as ...