Science : Ch 08 – How do Organisms Reproduce

This test is designed based on NCERT Syllabus for Class 10 Topics : How do Organisms Reproduce

Each time random 15 questions will be displaced
So retake the quiz till you have mastered all the questions

1 / 15

Fertilisation is the process of

Transfer of male gamete to female gamete

Fusion of nuclei of male and female gamete.

Adhesion of male and female reproductive organs

The formation of gametes by a reproductive organ

2 / 15

The characteristics transmitted from parents to ofspring are present in

Cytoplasm

Ribosome

Golgi bodies

Genes

3 / 15

During adolescence, several changes occur in the human body. mark one change from the following associated with sexual maturation in boys:

Loss of milk teeth

Increase in height

Cracking of voice

Weight gain

4 / 15

Which among the following statements are true for sexual reproduction in fowering plants?

It requires two types of gametes.

Fertilisation is a compulsory event.

It always results in the formation of zygote.

Offsprings formed are clone

1 , 2 and 3

2 and 3

1 and 3

2 and 4

5 / 15

The number of chromosomes in parents and ofsprings of a particular species remains unchanged due to

Doubling of chromosomes during gamate formation.

Halving of chromosomes during gamate formation

Halving of chromosomes during zygote formation

Doubling of chromosomes during gamate formation

6 / 15

Assertion (A): A basic event in reproduction is the creation of a DNA copy. Reason (R) : The DNA in the cell nucleus is the information source for making proteins.

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true but (R) is not the correct explanation of the assertion

(A) is true but (R) is false

(A) is false but (R) is true

7 / 15

Assertion (A): Variation is useful for the survival of species over time. Reason (R) : Populations of organisms fill well-defined places in the ecosystem, using their ability to reproduce

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true but (R) is not the correct explanation of the assertion

(A) is true but (R) is false

(A) is false but (R) is true

8 / 15

Assertion (A): Vegetative propagation makes possible propagation of plants that have lost the capacity to produce seeds. Reason (R) : New plants are developed from seeds in vegetative propagation.

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true but (R) is not the correct explanation of the assertion

(A) is true but (R) is false

(A) is false but (R) is true

9 / 15

Example of unisexual fowers.

Papaya

Mustard

Hibiscus

Rose

10 / 15

What is the mode of asexual reproduction in Amoeba?

Binary Fission

Fragmentation

Budding

Regeneration Or Budding

11 / 15

Name the organ that produces sperms in human males.

Testes

Testosterone

Both 1 & 2

None Of These

12 / 15

What do you understand by Puberty?

The age at which the reproductive organs of boys and girls become non functional.

The age at which the reproductive organs of boys and girls become functional.

It is a process of fertilisation in boys and girls.

None of these

13 / 15

Which pollination increases genetic uniformity and decreases variations

Cross Pollination

Self Pollination

Both 1 & 2

None Of These

14 / 15

Which of the following is surgical method of birth control in females?

Tubectomy

Vasectomy

Both 1 & 2

None Of These

15 / 15

Tubectomy does not prevent the spread of sexually transmitted diseases.

True

False

Not sure

Don’t know

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Science : Ch 08 – How do Organisms Reproduce

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