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Question-1
How many pairs of contrasting characters of pea were selected by Mendel for cross fertilization?

(A) Six	(B) Seven
(C) Five	(D) Twelve

Question-2
The study of fossils is called

(A) cytology	(B) herpatology
(C) palaeontology	(D) organic evolution

Question-3
In F₂-generation, how many types of seeds were obtained by Mendel in his original work ?

(A) One type	(B) Two types
(C) Four types	(D) Seven types

Question-4
The sex of the human child depends on the sex chromosome present in the

(A) ovum	(B) sperm
(C) Both (1) and (2)	(D) temperature at the time of conception.

Question-5
Which of the following is a single living species of genus Homo?

(A) habilis	(B) sapiens
(C) erectus	(D) neanderthalensis

Question-6
Wings of pigeon, mosquito and bat show

(A) atavism	(B) mutation
(C) divergent evolution	(D) convergent evolution

Question-7
An example of homologous organ is:

(A) Our arm and a dog’s foreleg	(B) Our teeth and an elephant’s tusks
(C) Potato and runners of grass	(D) All of the above

Question-8
Which of the following is a recessive trait in garden pea ?

(A) Tall stem	(B) Round seeds
(C) Wrinkled seeds	(D) Coloured seed coat

Question-9
The earliest fossil ape is

(A) Dryopithecus	(B) Ramapithecus
(C) Neanderthalensis	(D) Australopithecus

Question-10
An externally observable characters of an individual are called

(A) phenotype	(B) genotype
(C) homozygous	(D) heterozygous

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Std 10

CBSE

Practice in Related Chapters
How do Organisms Reproduce?
Heredity and Evolution
Management of Natural Resources
Our Environment
Control and Coordination
Life Processes