CBSE Class X – Science Biology Exam ( Full Syllabus)

This test is designed based on NCERT Syllabus for Class 10 Topics of Science – Biology

Each time random 25 questions will be displaced from the question bank of 500 + Questions
So we recommend you to retake the quiz till you have mastered all the questions

1 / 25

Assertion (A) : Acquired traits cannot be passed from one generation to next generation. Reason (R) : Inaccuracy during DNA copying of acquired trait is minimum.

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

2 / 25

Assertion (A) : Inheritance from the previous generation provides subtle changes in body design for the next generation. Reason (R) : Greater diversity will be generated if asexual reproduction is involved.

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

3 / 25

The gene type of green stemmed tomato plants is denoted as GG and that of purple stemmed tomato plants as gg. What colour of stem would you expect in F1 progeny when these two are crossed?

As green stem is a dominant trait as compared to purple stem, the colour of stem would be green in F1 progeny

As green stem is a dominant trait as compared to purple stem, the colour of stem would be Blue in F1 progeny

As green stem is a dominant trait as compared to purple stem, the colour of stem would be violet in F1 progeny

none of these

4 / 25

A group of grass hoppers – some green and some brown-lived in grassland having dry bushes and dry grass. Name the phenomeneon

Natural Selection

Natural inheritance

law of dominance

law of independence

5 / 25

Who is the Father of Genetics ?

Thomas Edison

charles Darwin

Mendel

none of these

6 / 25

A zygote which has an Y chromosome inherited from the father will develop into a

Boy

Girl

Y chromosome does not determine the sex of a child

Either boy or girl

7 / 25

Select the group which shares the maximum number of common characters

Two species of a genus

Two genera of a family

Two individuals of a species

Two genera of two families

8 / 25

In human males, all the chromosomes are match up perfectly except one. These unpaired chromosomes are:

Large chromosome

Small chromosome

Y chromosome

X chromosome

3 and 4

2 and 3

1 and 4

3

9 / 25

The ability of a cell to divide into several cells during reproduction in Plasmodium is called

Budding vision

Reduction division

Binary fission multiple fission

Multiple fission

10 / 25

Choose the precise statement(s) on budding in yeast from the following:

A parent cell divides into two or more daughter cells and here the parent identity is lost

In this the elongated nucleus divides to form two or more daughter nuclei.

A bud arises from a particular region on a parent body

After detaching from the parent body the bud grows into a new independent individual

11 / 25

The characteristics transmitted from parents to ofspring are present in

Cytoplasm

Ribosome

Golgi bodies

Genes

12 / 25

The length of pollen tube depends upon the distance between:

Pollen grain and upper surface of stigma

Pollen grain on upper surface of stigma and ovule

Pollen grain in anther and upper surface of stigma

Upper surface of stigma and lower part of style

13 / 25

Reproduction is essential for living organisms to order to:

Keep the individual organism alive

Fulfll their energy requirements

Maintain growth

Continue the species generation after generation

14 / 25

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

15 / 25

The site of fertilization of the ovum takes place is

Ovaries

Fallopian Tube

Callopian Tube

None Of These

16 / 25

Total number of chromosomes present in human beings are

46

23

24

48

17 / 25

Which part of alimentary canal collects bile from the liver?

Stomach

Small intestine

Large intestine

Oesophagus

18 / 25

Most of the digestion and absorption of the food occur in the:

Small intestine

Liver

Stomach

Large intestine

19 / 25

Single circulation, i.e., blood fows through the heart only once during one cycle of passage through the body, is manifested by:

Labeo, Chameleon, Salamander

Hippocampus, Exocoetus, Anabas

Hyla, Rana, Draco

Whale, dolphin, turtle

20 / 25

In the list of organisms given below, those that reproduce by the asexual method are:

Banana

Dog

Yeast

Amoeba

21 / 25

The red pigment which carries oxygen in the blood.

Haemoglobin

Platelets

Veins

Capillaries

22 / 25

The ways in which glucose is oxidized to provide energy in various organisms

Aerobic respiration

Anaerobic Respiration

Aerobic & Anaerobic

none of these

23 / 25

The rings of cartilage present in the throat ensure that the air passage

gets destroyed

collapse

does not collapse

none of these

24 / 25

Which one of the following diets would you recommended to the affected patient?

High sugar and low fat diet.

Low sugar and high protein diet.

High Carb and low fiber diet.

Low sugar and high fiber diet

25 / 25

The hormone whose level in the blood is responsible for the above diabetes

progestrone

insulin

estrogen

none of these

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CBSE Class X – Science Biology Exam ( Full Syllabus)

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