NCERT Solutions For Class 12 Biology Chapter 1: Reproduction In Organisms

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NCERT Solutions for Class 12 Biology Chapter 1 Reproduction In Organisms is provided in this article. This chapter is under Unit VI- Reproduction, which is excluded from CBSE Class 12 Syllabus. The important topics that are covered in Class 12 Biology Chapter 1 are:

Download PDF: NCERT Solutions for Class 12 Biology Chapter 1 Reproduction in Organisms

NCERT Solutions for Class 12 Biology Chapter 1

NCERT Solutions PDF for Class 12 Biology Chapter 1 Reproduction in Organisms is provided below.

Class 12 Biology Chapter 1 Reproduction in Organisms: Important Topics

Reproduction in organisms is a biological process that helps animals to breed and continue the growth of the species. There are different ways of reproducing which can be either sexual or asexual. The article helps the students to understand both sexual and asexual reproduction, their processes, male and female reproductive organs systems, and disorders related. The important topics related to the chapter are as follows:

Reproduction

Reproduction is the production of offspring. There are different ways of reproduction in both sexual and asexual forms based on preference.

Sexual Reproduction: In this process, an organism combines the genetic information from each of its parents and is genetically unique. It occurs when the sperm from the male parent fertilizes an egg from the female parent, producing offspring.
Asexual Reproduction: On the contrary, one parent copies itself to form a genetically identical offspring in asexual reproduction. The offspring that inherits the full set of genes of their single parent arises by asexual reproduction from either unicellular or multicellular organisms.

Binary Fission

Binary fission is the asexual reproduction that takes place by a separation of the body into two new bodies. In this process, an organism duplicates its genetic material, or deoxyribonucleic acid (DNA), and then divides into two parts (cytokinesis), with each new organism receiving one copy of DNA.

Gemmule Formation

Gemmule formation generally takes place in freshwater by several sponges like Spongilia and some water species such as sea sponges, figuline ficus, and various other types of poriferans.

Vegetative Propagation in Plants

Vegetative propagation is an asexual process of plant reproduction that occurs in its leaves, roots and stem. The process can take place through fragmentation and regeneration of specific vegetative parts of plants.

Vegetative propagation in plants

Vegetative propagation in plants

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CBSE CLASS XII Related Questions

1.
We know that plasmids and bacteriophages are the most commonly used vectors in biotechnology experiments. If we can link an alien piece of DNA to the plasmid DNA, the alien DNA can be multiplied equal to the copy number of the plasmid. Engineered vectors are used these days. Study the diagram of the E. coli cloning vector pBR322 and answer the questions that follow :
2.
Work out separate monohybrid crosses up to $F_2$ generation between two pea plants and two Antirrhinum plants, both having contrasting traits with respect to the colour of the flower. Comment on the patterns of inheritance in the crosses carried out in such two cases.
View Solution
3.
Arrange the following hormones in sequence of their secretion in a pregnant woman : hCG; LH; FSH; Relaxin.
View Solution
4.
The process of copying genetic information from template strand of DNA into RNA is called transcription. It is mediated by RNA polymerase. Transcription takes place in the nucleus of eukaryotic cells. In transcription, only a segment of DNA and only one of the strands is copied into RNA.
5.
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
6.
(I) Write the scientific names of the two species of filarial worms causing filariasis.
(II) How do they affect the body of infected persons ?
(III) How does the disease spread ?
View Solution

View All

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NCERT Solutions For Class 12 Biology Chapter 1: Reproduction In Organisms

NCERT Solutions for Class 12 Biology Chapter 1

Class 12 Biology Chapter 1 Reproduction in Organisms: Important Topics

Reproduction

Binary Fission

Gemmule Formation

Vegetative Propagation in Plants

CBSE CLASS XII Related Questions

2.
Work out separate monohybrid crosses up to $F_2$ generation between two pea plants and two Antirrhinum plants, both having contrasting traits with respect to the colour of the flower. Comment on the patterns of inheritance in the crosses carried out in such two cases.

3.
Arrange the following hormones in sequence of their secretion in a pregnant woman : hCG; LH; FSH; Relaxin.

4.
The process of copying genetic information from template strand of DNA into RNA is called transcription. It is mediated by RNA polymerase. Transcription takes place in the nucleus of eukaryotic cells. In transcription, only a segment of DNA and only one of the strands is copied into RNA.

5.
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.

6.
(I) Write the scientific names of the two species of filarial worms causing filariasis.
(II) How do they affect the body of infected persons ?
(III) How does the disease spread ?

Similar Biology Concepts

Comments

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NCERT Solutions For Class 12 Biology Chapter 1: Reproduction In Organisms

NCERT Solutions for Class 12 Biology Chapter 1

Class 12 Biology Chapter 1 Reproduction in Organisms: Important Topics

Reproduction

Binary Fission

Gemmule Formation

Vegetative Propagation in Plants

CBSE CLASS XII Related Questions

2.Work out separate monohybrid crosses up to $F_2$ generation between two pea plants and two Antirrhinum plants, both having contrasting traits with respect to the colour of the flower. Comment on the patterns of inheritance in the crosses carried out in such two cases.

3.Arrange the following hormones in sequence of their secretion in a pregnant woman : hCG; LH; FSH; Relaxin.

4.The process of copying genetic information from template strand of DNA into RNA is called transcription. It is mediated by RNA polymerase. Transcription takes place in the nucleus of eukaryotic cells. In transcription, only a segment of DNA and only one of the strands is copied into RNA.

5.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.

6.(I) Write the scientific names of the two species of filarial worms causing filariasis. (II) How do they affect the body of infected persons ? (III) How does the disease spread ?

Similar Biology Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
Work out separate monohybrid crosses up to $F_2$ generation between two pea plants and two Antirrhinum plants, both having contrasting traits with respect to the colour of the flower. Comment on the patterns of inheritance in the crosses carried out in such two cases.

3.
Arrange the following hormones in sequence of their secretion in a pregnant woman : hCG; LH; FSH; Relaxin.

4.
The process of copying genetic information from template strand of DNA into RNA is called transcription. It is mediated by RNA polymerase. Transcription takes place in the nucleus of eukaryotic cells. In transcription, only a segment of DNA and only one of the strands is copied into RNA.

5.
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.

6.
(I) Write the scientific names of the two species of filarial worms causing filariasis.
(II) How do they affect the body of infected persons ?
(III) How does the disease spread ?