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Heredity and Evolution

Description: MCQs Questions Heredity and Evolution CBSE X
Number of Questions: 24
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Tags: MCQs Questions Heredity and Evolution Heredity CBSE X Evolution Class X Heredity and Evolution
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The genetic constitution of an organism is

  1. phenotype

  2. gene

  3. genotype

  4. variation


Correct Option: C

The alternate form of the same gene is known as

  1. allele

  2. factors

  3. species

  4. units


Correct Option: A

Which of the following findings was not an outcome of Mendel's experiments?

  1. Independent assortment

  2. Dominant characters

  3. Segregation of factors

  4. Factors are present in the chromosomes


Correct Option: D

Pick the one which is not a part of Darwinian's natural selection theory.

  1. Overproduction

  2. Struggle for existence

  3. Use and disuse of organs

  4. Survival of the fittest


Correct Option: C

What happened when Mendel crossed two pure tall and dwarf pea plants?

  1. Both tall and dwarf plants were produced in F1 generation

  2. Only tall plants were produced in F1 generation

  3. Only dwarf plants were produced in F1 generation

  4. Plants of mixed characters were produced in F1 generation


Correct Option: B

The appearance of all tall plants in F1 generation in Mendelian experiment shows the law of

  1. segregation

  2. independent assortment

  3. dominance

  4. purity of gamete


Correct Option: C

The phenotypic ratio of F2 plants in the monohybrid cross is

  1. 1:2:1

  2. 3:1

  3. 9:3:1

  4. 3:2


Correct Option: B

Mendel performed hybridization experiments on

  1. Drosophila

  2. Pisum

  3. Chlorella

  4. Evening Primrose


Correct Option: B

Monohybrid cross is between the two individuals

  1. that differ in one character

  2. that differ in two characters

  3. of two different parents

  4. of same parents


Correct Option: A

The chromosomes in human male can be written as

  1. 44 + XX

  2. 23 + XX

  3. 44 + XY

  4. 23 + XY


Correct Option: C

Organs of different organisms having similar function but different in origin are

  1. homologous organs

  2. analogous organs

  3. vestigial organs

  4. all of the above


Correct Option: B

'Ontogeny recapitulates phylogeny' is called Biogenetic law, which is given by

  1. E Haeckel

  2. C Darwin

  3. J Lamarck

  4. Mendel


Correct Option: A

Find out 'vestigial organ' among these.

  1. Nictitating membrane in the eye

  2. Eye lid

  3. Eye brow

  4. Eye lens


Correct Option: A

When sperm (male gamete) having X chromosome fuses with ovum (female gamete), then the offspring will be

  1. male

  2. female

  3. either male or female

  4. can not be predicted


Correct Option: B

Paleontology is the study of

  1. embryos

  2. DNA

  3. fossils

  4. human race


Correct Option: C

Gametes are universally

  1. diploid

  2. haploid

  3. triploid

  4. polyploid


Correct Option: B

The term 'factor' which was given by Mendel is now known as

  1. nucleus

  2. DNA

  3. gene

  4. chromosome


Correct Option: C

The concept of origin of new species through natural selection was proposed by

  1. Darwin

  2. Linnaeus

  3. Mendel

  4. Weisman


Correct Option: A

The most accepted theory of evolution is

  1. theory of natural selection

  2. theory of origin of species

  3. theory of inheritance of acquired characters

  4. synthetic theory of evolution


Correct Option: D

Arrangement of all the chromosomes of an organism according to their shapes and sizes is done by

  1. prototype

  2. karyotype

  3. phenotype

  4. nucleotype


Correct Option: B

Forelimb of horse, human, whale and bat are

  1. connecting links

  2. analogous organs

  3. homologous organs

  4. vestigial organs


Correct Option: C

How many types of gametes are produced by plant having genotype RrYy?

  1. 2

  2. 4

  3. 6

  4. 3


Correct Option: B

The connecting link between reptiles and birds is

  1. equus

  2. archaeopteryx

  3. penguin

  4. ostrich


Correct Option: B

�The characters acquired by an organism during its life time is transmitted to the next generation. This statement is the basis of

  1. Darwinism

  2. Neo-Darwinism

  3. Synthetic theory

  4. Lamarckism


Correct Option: D
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