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) : 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

2 / 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?

purple

green

red

no color

3 / 25

Newly formed DNA copies

are identical

may not be identical

both 1 & 2

none of these

4 / 25

Who is the Father of Genetics ?

Thomas Edison

charles Darwin

Mendel

none of these

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

Exchange of genetic material takes place in:

Vegetative reproduction

Asexual reproduction

Sexual reproduction

Budding

7 / 25

The number of pair(s) of sex chromosomes in the zygote of humans is

One

Two

Three

Four

8 / 25

Which one is a Feasible progeny in F2 generation of pure bred tall plant with round seed and dwarf plant with wrinkled seeds?

Tall plant with round seeds

Tall plant with wrinkled seeds

Dwarf plant with round seed

All of the above

9 / 25

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

10 / 25

Example of unisexual fowers.

Papaya

Mustard

Hibiscus

Rose

11 / 25

What is the mode of asexual reproduction in Rhizopus

Spore Formation

Fragmentation

Budding

Binary Fission

12 / 25

What is the mode of asexual reproduction in Spirogyra

Spore Formation

Budding

Binary Fission

Fragmentation

13 / 25

which of the following is a viral STD?

Gonorrhoea

Syphilis.

Both 1 & 2

HIV-Aids And Warts

14 / 25

A pair of long convoluted tubes that carry ova or eggs from the ovary to the uterus is known as

Tubectomy

Callopian Tube

Fallopian Tube

All Of These

15 / 25

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

Tubectomy

Vasectomy

Both 1 & 2

None Of These

16 / 25

Tubectomy does not prevent the spread of sexually transmitted diseases.

True

False

Not sure

Don’t know

17 / 25

Anaerobic process:

Takes place in yeast during fermentation.

Takes place in the presence of oxygen.

Produces only energy in the muscles of human beings.

Produces ethanol, oxygen and energy.

18 / 25

Which one of the following declaration is accurate about the human circulatory system?

Blood transports only oxygen and not carbon dioxide.

Human heart has five chambers.

Valves ensure that the blood does not flow backwards

Both oxygen-rich and oxygen-defcient blood gets mixed in the heart.

19 / 25

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

Small intestine

Liver

Stomach

Large intestine

20 / 25

Which is the true sequence of air passage during inhalation?

Nostrils → Larynx → Pharynx → Trachea → Lungs

Nasal passage → Trachea → Pharynx → Larynx → Alveoli

Larynx → Nostrils → Pharynx → Lungs

Nostrils → Pharynx → Larynx → Trachea → Alveoli

21 / 25

The xylem in plants are responsible for

Transport of water

Transport of food

Transport of amino acids

Transport of oxygen

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

gets destroyed

collapse

does not collapse

none of these

24 / 25

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

progestrone

insulin

estrogen

none of these

25 / 25

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

2

4

3

1

Your score is

0%

CBSE Class X – Science Biology Exam ( Full Syllabus)

Archives

Categories