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

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

Boy

Girl

X chromosome does not determine the sex of a child

Either boy or girl

2 / 25

Assertion (A) : A single copy of ‘T’ is enough to make the plant tall. Reason (R) : Tallness trait (T) in Mendel’s experiment is a dominant trait.

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

Why did Mendel carry out an experiment to study inheritance of two traits in garden-pea

To see the interaction and basis of inheritance between them.

To see the Difference between them.

Just to Observe them

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

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

6 / 25

A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the exact homologous structures?

Carrot and potato

Carrot and tomato

Radish and carrot

Radish and potato

7 / 25

If the fossil of an organism is found in the deeper layers of earth, then we can predict that:

The extinction of the organism occurred recently

The extinction of the organism occurred thousands of years ago

The fossil position in the layers of Earth is not related to its time of extinction.

The time of extinction cannot be determined.

8 / 25

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

Boy

Girl

X chromosome does not determine the sex of a child

Either boy or girl

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

The characteristics transmitted from parents to ofspring are present in

Cytoplasm

Ribosome

Golgi bodies

Genes

11 / 25

Which among the following diseases is not sexually transmitted?

Syphillis

Hepatitis

HIV-AIDS

Gonorrhoea

12 / 25

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

13 / 25

What is the mode of asexual reproduction in Rhizopus

Spore Formation

Fragmentation

Budding

Binary Fission

14 / 25

Name the harmone secretes a sperms in human males.

Testosterone

Testes

Both 1 & 2

All Of These

15 / 25

The site of fertilization of the ovum takes place is

Ovaries

Fallopian Tube

Callopian Tube

None Of These

16 / 25

Tubectomy does not prevent the spread of sexually transmitted diseases.

True

False

Not sure

Don’t know

17 / 25

Which part of alimentary canal collects bile from the liver?

Stomach

Small intestine

Large intestine

Oesophagus

18 / 25

Select the function of the pancreatic Juice from the following:

Trypsin digests proteins and lipase carbohydrates

Trypsin digests emulsifed fats and lipase proteins

Trypsin and lipase digest fats

Trypsin digests proteins and lipase digests emulsifed fats droplets

19 / 25

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

Small intestine

Liver

Stomach

Large intestine

20 / 25

Which of the following is an inappropriate statement?

Organisms grow with time.

Organisms must repair and maintain their structure.

Movement of molecules does not take place among cells.

Energy is essential for life processes.

21 / 25

The organ of the circulatory system in humans.

Veins

Nose

Lungs

Kidney

22 / 25

If human urine is allowed to stand for sometime, it smells of ammonia, why?

Urea present in urine gets decomposed into ammonia by the action of bacteria

Urea present in urine gets decomposed into ammonia by the action of virus.

Urea present in urine gets composed into ammonia by the action of bacteria

none of these

23 / 25

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

Aerobic respiration

Anaerobic Respiration

Aerobic & Anaerobic

none of these

24 / 25

The main excretony waste removed by kidneys from blood

Urea

Urine

salts

glucose

25 / 25

How many chambers are there in the heart of an Human being?

2

4

3

1

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CBSE Class X – Science Biology Exam ( Full Syllabus)

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