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

Mendel crossed the round and green seeded pea plants with the wrinkled and yellow seeded pea plants. Give the phenotypic ratio of F2 generation.

Round Yellow : Round Green : Wrinkled Yellow : wrinkled Green = 9 : 3 : 2: 1.

Round Yellow : Round Green : Wrinkled Yellow : wrinkled Green = 8 : 3 : 3 : 1.

Round Yellow : Round Green : Wrinkled Yellow : wrinkled Green = 9 : 3 : 3 : 1.

Round Yellow : Round Green : Wrinkled Yellow : wrinkled Green = 4: 3 : 3 : 1.

2 / 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

3 / 25

What were his fndings with respect to inheritance of traits in F1 and F2 generation by Mendle?

Feature of only one parental type appear

None of these

4 / 25

What is the phenotypic ratio obtained in Mendels dihybrid cross

9:3:3:1

9:3:2:1

9:3:1:1

9:9:3:1

5 / 25

Bacteria have a simpler body plan when compared with human beings. Does it mean that human beings are more evolved than bacteria?

Yes

No

It is difficult to say

none of these

6 / 25

The first person to give scientific explanation for the mechanism of transmission of characters from parents to the offsprings.

Charles Darwin

Mendel

Thomas Edison

none of these

7 / 25

Who is the Father of Genetics ?

Thomas Edison

charles Darwin

Mendel

none of these

8 / 25

Which of the following statement is inappropriate?

For every hormone there is a gene.

For every protein there is a gene.

For production of every enzyme there is a gene.

For every molecule of fat there is a gene.

9 / 25

In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called

Filaments

Hyphae

Rhizoids

Roots

10 / 25

Factors responsible for the rapid spread of bread mould on slices of bread are:

Large number of spores

Availability of moisture and nutrients in the bread

Presence of tubular branched hyphae

Formation of round shaped sporangia

1

2

1 And 2

1 and 3

11 / 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

12 / 25

Which among the following diseases is not sexually transmitted?

Syphillis

Hepatitis

HIV-AIDS

Gonorrhoea

13 / 25

Example of bisexual fowers.

Watermelon

Papaya

Hibiscus

Corn

14 / 25

What is the mode of asexual reproduction in hydra?

Fragmentation

Binary Fission

Spore Formation

Regeneration Or Budding

15 / 25

Name the organ that produces sperms in human males.

Testes

Testosterone

Both 1 & 2

None Of These

16 / 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

17 / 25

When air is blown from mouth into a test tube suppress lime water, the lime water turns milky due to the presence of:

Oxygen

Carbon dioxide

Nitrogen

Water vapour

18 / 25

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

Small intestine

Liver

Stomach

Large intestine

19 / 25

In which part of the alimentary canal food is ultimately digested?

Stomach

Mouth cavity

Large intestine

Small intestine

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

gets destroyed

collapse

does not collapse

none of these

23 / 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

24 / 25

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

2

4

3

1

25 / 25

Respiratory pigment in human body is

Haemoglobin.

water

chlorophyll

none of these

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CBSE Class X – Science Biology Exam ( Full Syllabus)

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