Home Courses Tests Questions
Hindi Version of the Questions with Green background are available only
objective Ques (25 results)
11)

Identify the two organisms which are now extinct and are studied from their fossils.

Class 10 Biology
A)

white tiger and sparrow

B)

dinosaur and fish (Knightia)

C)

ammonite and white tiger

D)

trilobite and white tiger

12)

Which of the following decides the sex of the child?

Class 10 Biology
A)

male gamete, i.e., sperm

B)

female gamete, i.e., ovum

C)

both sperm and ovum

D)

mother

13)

A cross between two individuals results in a ratio of 9 : 3 : 3 :1 for four possible phenotypes of progeny. This is an example of a

Class 10 Biology
A)

Monohybrid cross

B)

Dihybrid cross

C)

Test cross

D)

F1 generation

14)

Which of the following characters can be acquired but not inherited?

Class 10 Biology
A)

Colour of skin

B)

Size of body

C)

Colour of eyes

D)

Texture of hair

15)

Those organs which have the same basic structure but different functions are called

Class 10 Biology
A)

Vestigial organs

B)

Analogous organs

C)

Homologous organs

D)

None of these

16)

Those organs which have different basic structure but have similar appearance and perform similar functions are called

Class 10 Biology
A)

Analogous organs

B)

Homologous organs

C)

Vestigial organs

D)

None of these

17)

The remaps (or impressions) of dead animals or plant? that lived in the remote past are known as

Class 10 Biology
A)

extinct species

B)

fossils

C)

naturally selected species

D)

none of the above

18)

The process by which new species develop from the existing species is known as

Class 10 Biology
A)

Natural selection

B)

Evolution

C)

Artificial selection

D)

Speciation

19)

Which of the following is an example of genetic variation?

Class 10 Biology
A)

One person has a scar, but his friend does not.

B)

One person is older than another.

C)

Reeta eats meat, but her sister Geeta is a vegetarian.

D)

Two children have different eye colours.

20)

Differences between organisms in a species are described as variation. Which of the following would you describe as continuous variation?

Class 10 Biology
A)

Hair colour

B)

Eye colour

C)

sex

D)

Weight

showing 11 - 20 results of 25 results
onlinetest practiceQue