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CBSE Notes 2011-2012 » Heredity and Evolution - Class 10 Biology MCQs (Free Practice Test)

Heredity and Evolution - Class 10 Biology MCQs (Free Practice Test)


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A select subset of questions has been made available here.
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Question :

Wild cabbage has evolved into new varieties like cabbage,
broccoli, and cauliflower by


Answer :

genetic drift
natural selection
reproductive isolation
artificial selection


Question :

Which of the following statement is incorrect ?


Answer :

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.


Question :

The two versions of a trait (character) which are brought
in by the male and female gametes are situated on


Answer :

copies of the same chromosome
two different chromosomes
sex chromosomes
any chromosome


Question :

A cross between tall pea plants with yellow seeds (Tt Yy)
and dwarf plants with green seeds (tt yy), progeny will
be


Answer :

Tall plants with yellow seeds and dwarf plants with green seeds.
Tall plants with yellow seeds and dwarf plants with yellow seeds.
All tall plants with yellow seeds.
Tall plants with yellow seeds, dwarf plants with yellow seeds, tall plants with green seeds and dwarf plants with green seeds.


Question :

The branch of biology that deals with transmission of
characters from one generation to other is termed as


Answer :

evolution
genetics
heredity
biogenetic law


Question :

Select the statements that describe characteristics of genes :
(i) Genes are specific sequence of bases in a DNA
molecule
(ii) A gene does not code for proteins
(iii) In individuals of a given species, a specific gene
is located on a particular chromosome
(iv) Each chromosome has only one gene


Answer :

(i) and (ii)
(i) and (iii)
(i) and (iv)
(ii) and (iv)


Question :

The fossil remains of Archaeopteryx is a connecting link
between


Answer :

reptiles and mammals
reptiles and bird
fish and amphibian
amphibian and reptile


Question :

Two pink coloured flowers on crossing resulted in 1 red, 2
pink and 1 white flower progeny. The nature of the cross
will be


Answer :

double fertilisation
self-pollination
cross-fertilisation
no fertilisation


Question :

Which prediction from the fossil record is in agreement
with the theory of evolution ?


Answer :

Unicellular organisms are first found in strata above multicellular fossils.
Land animals appear earlier than land plants in the fossil record.
Reptiles appear earlier ihan insects in the fossil record.
Prokaryote fossils appear earlier than eukaryote fossils.


Question :

The basis of differentiating two groups of mere or less
similar organisms as separate species is


Answer :

genetic drift.
natural selection.
reproductive isolation,
geographical barrier.