NCERT Solutions for Class 12 Biology Chapter 2 - Sexual Reproduction in Flowering

 

NCERT Solutions for Class 12 Biology Chapter 2 - Sexual Reproduction in Flowering Plants:

The myriads of flowers that we enjoy gazing at, the scents and the perfumes that we swoon over, the rich colours that attract us, are all there as an aid to sexual reproduction in flowering plants. In the flower, androecium consisting of stamens represents the male reproductive organs and gynoecium consisting of pistils represents the female reproductive organs. In NCERT Class 12 Biology Chapter 2 - Sexual Reproduction in Flowering Plants, you will study all about the reproduction in flowering plants.

In Chapter 2 - Sexual Reproduction in Flowering Plants of NCERT Class 12 Biology you will also learn about pollen grains that develop inside the microsporangia of the flower. There are four wall layers, the epidermis, endothecium, middle layers and the tapetum surround the microsporangium. Cells of the sporogenous tissue lying in the center of the microsporangium, undergo meiosis (microsporogenesis) to form tetrads of microspores. Individual microspores mature into pollen grains.

Here are the important topics which are mentioned in NCERT 12th Biology Chapter 2 - Sexual Reproduction in Flowering:

2.1 Flower – A Fascinating Organ of Angiosperms

2.2 Pre - Fertilisation: Structures and Events

    2.2.1 Stamen, Microsporangium and Pollen Grain

    2.2.2 The Pistil, Megasporangium (ovule) and Embryo sac

    2.2.3 Pollination

2.3 Double Fertilization

2.4 Post - Fertilisation: Structures and Events

    2.4.1 Endosperm

    2.4.2 Embryo

    2.4.3 Seed

2.5 Apomixis And Polyembryony

Let’s talk about pistil, in NCERT Class 12 Biology Chapter 2 - Sexual Reproduction in Flowering Plants you will study that pistil of a flower has three parts – the stigma, style and the ovary. Ovules are present in the ovary. The ovules have a stalk called funicle, protective integument(s), and an opening called micropyle. The central tissue is the nucellus in which the archesporium differentiates. A cell of the archesporium, the megaspore mother cell divides meiotically and one of the megaspores forms the embryo sac (the female gametophyte). The mature embryo sac is 7-celled and 8-nucleate.

After going through Class 12 Biology Chapter 2 - Sexual Reproduction in Flowering Plants, you must know how to answer these questions:

Q 1. Name the parts of an angiosperm flower in which development of male and female gametophyte take place.

Q 2. Differentiate between microsporogenesis and megasporogenesis. Which type of cell division occurs during these events?

Q 3. Name the structures formed at the end of these two events. 3. Arrange the following terms in the correct developmental sequence: Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes.

In case, you have any doubt or query in solving these questions then NCERT Solutions for Class 12 Biology Chapter 2 - Sexual Reproduction in Flowering Plants will help you to solve them.

NCERT Solutions for Class 12 Biology Chapter 2 - Sexual Reproduction in Flowering: Solved Exercise Questions

NCERT Solutions class 12 – Biology

Chapter 1

Reproduction in organisms

Chapter 3

Human Reproduction

Chapter 4

Reproductive Health

Chapter 5

Principles of Inheritance and Variation

Chapter 6

Molecular basis of inheritance

Chapter 7

Evolution

Chapter 8

Human health and disease

Chapter 9

Strategies for enhancement in food production

Chapter 10

Microbes in Human Welfare

Chapter 11

Biotechnology: Principles and Processes

Chapter 12

Biotechnology and its applications

Chapter 13

Organisms and Populations

Chapter 14

Ecosystem

Chapter 15

Biodiversity and Conservation

Chapter 16

Environmental Issues

 

NCERT Solutions for Class 12- Subject wise

NCERT solutions for Class 12 Maths

NCERT solutions for Class 12 Chemistry

NCERT solutions for  Class 12 Biology

NCERT solutions for Class 12 Physics

 

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