Science : Ch 09 – Heredity and Evolution

This test is designed based on NCERT Syllabus for Class 10 Topics : Heredity and Evolution

Each time random 15 questions will be displaced
So retake the quiz till you have mastered all the questions

1 / 15

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 / 15

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 / 15

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 / 15

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.

5 / 15

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

6 / 15

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

7 / 15

A woman has only daughters which

Indicates that in every fusion, the sperm carrying the Y chromosome fertilized the ovum.

Indicates that in every fusion, the sperm carrying the X and Y chromosome fertilized the ovum.

Indicates that in every fusion, the sperm carrying the X chromosome fertilized the ovum.

Both 1 & 3

8 / 15

Newly formed DNA copies

are identical

may not be identical

both 1 & 2

none of these

9 / 15

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

10 / 15

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

11 / 15

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

12 / 15

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

13 / 15

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

One

Two

Three

Four

14 / 15

Name the organ analogous to the wings of birds.

Forelimb of human

Wings of insect

Fore-leg of horse

None of these

15 / 15

Select the accurate statement:

The tendril of a pea plant and the phylloclade of Opuntia are homologous.

The tendril of a pea plant and the phylloclade of Opuntia are analogous.

The wings of birds and the limbs of lizards are analogous

The wings of bird and the wings of bats are homologous.

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Science : Ch 09 – Heredity and Evolution

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