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

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

2 / 25

The major function of cellular DNA is

to store information and pass it to ofspring.

to store information and pass it to parents.

to store information and not pass it to ofspring.

none of these

3 / 25

Name the plant Mendel used of F1 & F2 generation cross of tall and short plant experiment.

Garden pea

Tomato

Brinjal

All vegetables

4 / 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

5 / 25

Exchange of genetic material takes place in:

Vegetative reproduction

Asexual reproduction

Sexual reproduction

Budding

6 / 25

From the list given below, select the character which can be acquired but not inherited:

Colour of eyes

Colour of skin

Size of body

Nature of hair

7 / 25

Two pink coloured fowers on crossing resulted in 1 red, 2 pink and 1 white fower progeny. The nature of the cross will be:

Double fertilization

Self pollination

Cross fertilization

No fertilization

8 / 25

If a round, green-seeded pea plant (RR yy) is crossed with wrinkled, yellow seeded pea plant, (rr YY), the seeds production in F1 generation are:

Round and yellow

Round and green

Wrinkled and green

Wrinkled and yellow

9 / 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

10 / 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

11 / 25

Which one of the following best describes the function of the umbilical cord?

Feeds the embryo with digested substances

Conveys nutrients and wastes to and from the embryo respectively

Removes waste matter from the embryo to the mothers blood

Supplies oxygenated blood from the mother to the embryo

12 / 25

which of the following is a viral STD?

Gonorrhoea

Syphilis.

Both 1 & 2

HIV-Aids And Warts

13 / 25

The site of fertilization of the ovum takes place is

Ovaries

Fallopian Tube

Callopian Tube

None Of These

14 / 25

The development foetus takes place in mother’s body from

Ovaries

Embryo

Placenta

Fallopian Tube

15 / 25

A small family is a happy family means

A couple with only two children.

A couple with only four children.

A couple with only three children.

A couple with only two children.

16 / 25

The number of chromosomes shared from both male & female are

26 from each

23 from each

46 from each

12 from each

17 / 25

Pseudopodia are:

Small hair-like structures present on unicellular organisms.

False feet developed in some unicellular organisms

Long, tube-like structures coming out of the mouth

Suckers which are attached to the walls of the intestines. glomerulus and tubular region (Renal tubule). Glucose, amino acids and salts are selectively reabsorbed in tabular region

18 / 25

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

Small intestine

Liver

Stomach

Large intestine

19 / 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

20 / 25

Oxygen liberated during photosynthesis comes from:

Water

Chlorophyll

Carbon dioxide

Glucose

21 / 25

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

gets destroyed

collapse

does not collapse

none of these

22 / 25

The Fluid collected in the Bowman’s capsule as a result of ultrafiltration is called

blood

urine

nephric filtrate

urea

23 / 25

What does a low hemoglobin level mean?

referred to as low red blood count.

referred to as high red blood count.

referred to as low/high red blood count.

none of these

24 / 25

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

2

4

3

1

25 / 25

Name an enzyme present in pancreatic juice

Trypsin

lipase

lipase & Trypsin

none of these

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CBSE Class X – Science Biology Exam ( Full Syllabus)

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