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

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 / 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?

purple

green

red

no color

3 / 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

4 / 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

5 / 15

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

6 / 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

7 / 15

Total number of chromosomes along with the sex chromosomes that are present in a human female and a human male.

46

23

64

32

8 / 15

Exchange of genetic material takes place in:

Vegetative reproduction

Asexual reproduction

Sexual reproduction

Budding

9 / 15

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.

10 / 15

Name the organ analogous to the wings of birds.

Forelimb of human

Wings of insect

Fore-leg of horse

None of these

11 / 15

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

12 / 15

Select the group which shares the maximum number of common characters

Two species of a genus

Two genera of a family

Two individuals of a species

Two genera of two families

13 / 15

Choose the statements that describe the characteristics of genes:

Genes are specifc sequence of bases in a DNA molecule

A gene does not code for proteins.

In individuals of a given species, a specifc gene is located on a particular chromosome.

Each chromosome has only one gene

1

1 and 3

3 and 4

3

14 / 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

15 / 15

Select the inappropriate statement:

The frequency of certain genes in a population change over several generations resulting in evolution.

The reduction in the weight of an organism due to starvation is genetically controlled.

Low weight parents can have heavy weight progeny.

Traits which are not inherited over generations do not cause evolution.

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Science : Ch 09 – Heredity and Evolution

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