NCERT Solutions For Class 10 Science Chapter 8: How Do Organisms Reproduce?

NCERT Solutions for Class 10 Science Chapter 8 How do Organisms Reproduce? is provided in the article. Some of the important topics of How do Organisms Reproduce chapter include:

Expected no of questions: 3 to 4 questions of total 6 marks.

Download PDF: NCERT Solutions for Class 10 Science Chapter 8 pdf

NCERT Solutions for Class 10 Science Chapter 8

NCERT Solutions for Class 10 Science Chapter 8 How do Organisms Reproduce is given below.

NCERT Solution class 10 science chapter 8

NCERT Solutions for Class 10 Science

Reproduction is a biological process in which an organism reproduces offspring who are biologically identical to the organism. Reproduction enables and ensures species continuity generation after generation. Organisms reproduce in two ways- namely, asexually and sexually.

Asexual Reproduction: Asexual reproduction takes place in bacteria, amoeba, hydra, etc, and does not involve the fusion of male and female gametes.

Sexual Reproduction: Sexual reproduction can be seen in humans and many animals, and involves the fusion of male and female gametes.

Pollination: Pollination is the transfer of pollen grains from the anther (the male portion of a flower) to the stigma (the female component of a flower).

Self-Pollination is a pollination process in which pollen is transferred between the anther and stigma of the same flower.
Cross-Pollination is a type of pollination in which pollen is transferred between the anther and stigma of different blooms of the same plant or distinct plants of the same species.

When pollen is transported to the stigma, male gametes from pollen grains are released and unite with the egg in the ovule to generate a zygote. This process of gamete fusion is known as fertilization.

In humans, male reproductive organs consist of:

Testes
Scrotum
Vas deferens
Accessory glands
Penis

Female reproductive organs consist of:

Ovaries
Fallopian Tube
Uterus
Vagina

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CBSE X Related Questions

1.
(a) Study the given electric circuit in which 2 A electric current is flowing between points X and Y.

(i) Using the battery, key, voltmeter and ammeter in this given electric circuit, redraw a circuit diagram in which 2 \(\Omega\) and 4 \(\Omega\) resistors are connected between X and Y in parallel combination.
(ii) Circuit drawn by you, in which resistors are connected in parallel combination, calculate the electric current flowing through 4 \(\Omega\) resistor.
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2.
When a human egg is fertilized by a sperm having ‘Y’ chromosome, the zygote has the following combination of chromosomes:
- 44 + XX
- 22 + XX
- 44 + XY
- 22 + XY
View Solution
3.
In human beings, the implantation of fertilised egg takes place in which part of female reproductive system?
- Oviduct
- Cervix
- Uterus
- Vagina
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4.
Sex is determined by different factors in various species. However, in human beings, it is determined genetically. Which amongst the following option(s) is/are correct for human beings ?
Gamete carrying X chromosome from female parent.
Gamete carrying X chromosome from male parent.
Gamete carrying Y chromosome from male parent.
- (ii) and (iii)
- (i) only
- (i) and (iii)
- (iii) only
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5.
Draw a neat diagram to show germination of pollen on the female reproductive part of the flower. Name and label only the following parts:
(a) The part that receives the pollen grain.
(b) The structure that carries the male germ cell to reach the female germ cell.
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6.
Which structure in a leaf is mainly responsible for gaseous exchange?
- Xylem
- Stomata
- Phloem
- Cuticle
View Solution