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

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NCERT Solutions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants is included in this article. It comprises all the important definitions, concepts, and methodologies which will prove to be extremely beneficial for the students appearing for CBSE Class 12 Exam 2022-23. The important topics that are covered in Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants are:

Expected no. of Questions: 3-4 questions of around 4 marks.

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

NCERT Solutions for Class 12 Biology Chapter 2

NCERT Solutions PDF for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants are given below:

Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants: Important Topics

The organ of sexual reproduction is the flower. Male gametes are found in pollen grains and produced in the anthers of the flower. Female gametes are found in ovules and produced in the ovary of the flower. In plants, both sexual and asexual reproduction takes place.

Apomixis

Apomixis in flowering plants can be referred to as the asexual formation of a seed from the maternal tissues of the ovule, avoiding the processes of meiosis and fertilization, and leading to embryo development.

Binary Fission

Binary Fission is a type of asexual reproduction wherein an organism divides into two, each part carrying one copy of genetic material. This process takes place with the division and duplication of the parent’s genetic matter into two parts

Double Fertilization

Double fertilization is a process in flowering plants, also known as angiosperms, by means of which they reproduce sexually.

Fertilization: The process, in general, involves the fusion of male and female gametes. In an angiosperm, double fertilization is said to be taking place. This simply means that two types of fertilization or fusion are occurring simultaneously where one female gamete fuses with two male gametes.

Flower Structure

The flower structure comprises four main parts or whorls—known as the calyx, corolla, androecium, and gynoecium. Flowering plants, also known as angiosperms, account for the vast majority of the plant kingdom.

Calyx: The calyx, part of a flower, is made up of sepals, green leaf-like structures that enclose the unopened bud.
Corolla: The corolla is composed of the petals of the flower, which are usually brightly colored in order to attract insects.
Androecium: The androecium is made up of the male reproductive organs, the stamens. Each stamen comprises a long, slender filament topped by a pollen-producing anther.
Gynoecium: The gynoecium lies in the very middle of the flower and is composed of a pistil or pistils (or carpels, as they are also sometimes called).

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CBSE CLASS XII Related Questions

1.
What is the carrying capacity of a species in a habitat?
Explain the growth curve that takes this capacity into account.
View Solution
2.
Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected? Write its symptoms as well as karyotype.
View Solution
3.
Describe the experiment conducted by T.H. Morgan on Drosophila melanogaster involving eye colour and body colour.
How did the results deviate from Mendelian inheritance pattern ?
(c) Explain the two genetic terms used by Morgan for his observations.
View Solution
4.
Draw a labelled two-celled structure of male gametophyte of an angiosperm.
Name the three layers that surround the cytoplasm of a male gametophyte starting from innermost to outermost layer.
(iii) Which organic material makes the outermost layer? Mention its advantage.
(iv) Why is the outermost layer of male gametophyte not continuous ?
View Solution
5.
"Early and accurate diagnosis of diseases is vital in medical technology."
Name the conventional methods of diagnosis and their disadvantages.
Which three diagnostic techniques have been developed through Biotechnology ? Explain how each one helps in detecting diseases.
View Solution
6.
Work out the crosses between:
Normal female and Haemophilic male
Carrier female and Normal male
(III) Carrier female and Haemophilic male
Write the conclusions you draw from these crosses. Comment on the type of inheritance of the disease.
(Use: $X$ - Normal, $X^h$ - Haemophilic)
View Solution

View All

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Sexual Reproduction in Flowering Plants

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

NCERT Solutions for Class 12 Biology Chapter 2

Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants: Important Topics

Apomixis

Binary Fission

Double Fertilization

Flower Structure

CBSE CLASS XII Related Questions

1.
What is the carrying capacity of a species in a habitat?
Explain the growth curve that takes this capacity into account.

2.
Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected? Write its symptoms as well as karyotype.

3.
Describe the experiment conducted by T.H. Morgan on Drosophila melanogaster involving eye colour and body colour.
How did the results deviate from Mendelian inheritance pattern ?
(c) Explain the two genetic terms used by Morgan for his observations.

5.
"Early and accurate diagnosis of diseases is vital in medical technology."
Name the conventional methods of diagnosis and their disadvantages.
Which three diagnostic techniques have been developed through Biotechnology ? Explain how each one helps in detecting diseases.

6.
Work out the crosses between:
Normal female and Haemophilic male
Carrier female and Normal male
(III) Carrier female and Haemophilic male
Write the conclusions you draw from these crosses. Comment on the type of inheritance of the disease.
(Use: $X$ - Normal, $X^h$ - Haemophilic)

Similar Biology Concepts

Comments

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

NCERT Solutions for Class 12 Biology Chapter 2

Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants: Important Topics

Apomixis

Binary Fission

Double Fertilization

Flower Structure

CBSE CLASS XII Related Questions

1.What is the carrying capacity of a species in a habitat? Explain the growth curve that takes this capacity into account.

2.Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected? Write its symptoms as well as karyotype.

3.Describe the experiment conducted by T.H. Morgan on Drosophila melanogaster involving eye colour and body colour. How did the results deviate from Mendelian inheritance pattern ? (c) Explain the two genetic terms used by Morgan for his observations.

5."Early and accurate diagnosis of diseases is vital in medical technology." Name the conventional methods of diagnosis and their disadvantages. Which three diagnostic techniques have been developed through Biotechnology ? Explain how each one helps in detecting diseases.

6.Work out the crosses between: Normal female and Haemophilic male Carrier female and Normal male (III) Carrier female and Haemophilic male Write the conclusions you draw from these crosses. Comment on the type of inheritance of the disease. (Use: $X$ - Normal, $X^h$ - Haemophilic)

Similar Biology Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
What is the carrying capacity of a species in a habitat?
Explain the growth curve that takes this capacity into account.

2.
Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected? Write its symptoms as well as karyotype.

3.
Describe the experiment conducted by T.H. Morgan on Drosophila melanogaster involving eye colour and body colour.
How did the results deviate from Mendelian inheritance pattern ?
(c) Explain the two genetic terms used by Morgan for his observations.

5.
"Early and accurate diagnosis of diseases is vital in medical technology."
Name the conventional methods of diagnosis and their disadvantages.
Which three diagnostic techniques have been developed through Biotechnology ? Explain how each one helps in detecting diseases.

6.
Work out the crosses between:
Normal female and Haemophilic male
Carrier female and Normal male
(III) Carrier female and Haemophilic male
Write the conclusions you draw from these crosses. Comment on the type of inheritance of the disease.
(Use: $X$ - Normal, $X^h$ - Haemophilic)