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

Characters that are transmitted from parents to ofspring during reproduction

Only similarities with parents

Only variations with parents

Both similarities and variations with parents

Neither similarities nor variations

3 / 15

The number of chromosomes in parents and offsprings of a particular species remains constant due to: Halving of chromosomes during gamete formation

Doubling of chromosomes after zygote formation

Halving of chromosomes during gamete formation

Doubling of chromosomes after gamete formation

Halving of chromosomes after gamate formation

4 / 15

Characters transmitted from parents to ofspring are present in:

Cytoplasm

RIbosome

Golgi complex

Genes

5 / 15

Which one of the following permanently marks the end of menstrual cycle in females ?

Menarche

Menopause

Ovulation

Pregnancy

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

Slides of binary fission in Amoeba and budding in yeast were given for observa group of students. Some of the observations reported by the group are given below:

Cytokinesis was observed in the yeast cell.

A chain of buds were observed in Amoeba.

Single cell of Amoeba and single cell of yeast were undergoing binary fission and budding respectively

Elongated nucleus was dividing to form two daughter nuclei in Amoeba

3 and 4

2 and 3

3

1 and 4

8 / 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

9 / 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

10 / 15

What is the mode of asexual reproduction in planaria?

Spore Formation

Fragmentation

Binary Fission

Regeneration

11 / 15

What is the mode of asexual reproduction in Rhizopus

Spore Formation

Fragmentation

Budding

Binary Fission

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

A surgical method of Blocking vas deferens to prevent pregnancy is done for

Females

Males

Both 1 & 2

None Of These

15 / 15

Blocking of fallopian tubes prevents ?

Pregnancy

Sexually transmitted diseases

Genetic uniformity

None Of These

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Science : Ch 08 – How do Organisms Reproduce

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