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Free CBSE Class 10 Science Unit II: World of Living Heredity and Evolution Worksheets

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Sample CBSE Class 10 Science Unit II: World of Living Heredity and Evolution Worksheet Questions

1.

A tall pea plant (X)is crossed with a dwarf pea plant and all the F1 progenies are tall. What is the genotype of X? 

1.

TT

2.

Tt

3.

tt

4.

Cannot tell

2.

Select the group which shares maximum number of common
characters:

1.

two individuals of a species

2.

two species of a genus

3.

two genera of a family

4.

two genera of two families

3.

The maleness of a child is determined by:

1.

the X chromosome in the zygote

2.

the Y chromosome in zygote

3.

the cytoplasm of germ cell which determines the sex

4.

sex is determined by chance

4.

Which of the following can be called a characteristic?

1.

plants can photosynthesis

2.

we have 2 eyes

3.

the mango tree is multicellular

4.

all of these

5.

which of the following is totally impossible outcome of Mendel's Experiment?

1.

3 tall 1 short plant

2.

24 tall and 8 short plants

3.

8 tall and 0 short plants

4.

4 tall and 1 medium height

6.
State True or False: Asexually reproducing organisms will show more variations as compared to sexually reproducing organisms.
1. TRUE 2. FALSE
7.
State True or False: Traits which are not inherited over generations do not cause evolution.
1. TRUE 2. FALSE
8.
State True or False: For the production of every enzyme there is a gene.
1. TRUE 2. FALSE
9.
How are variant genotypes produced?
10.
Why was pea plant chosen by Mendel for his experiments?

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