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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.
You can use this for preparation purpose.
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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.


Question :

Human offspring's sex is determined


Answer :

through father's sex chromosomes.
through mother's sex chromosomes.
by hormones.
by enzymes.


Question :

If a round, green seeded pea plant (RR yy) is crossed with
wrinkled, yellow seeded pea plant, (rr YY) the seeds
produced in F1 generation are


Answer :

round and yellow
round and green
wrinkled and green
wrinkled and yellow


Question :

The component of a chromosome that controls heredity is


Answer :

DNA
RNA
histones
proteins


Question :

Study of fossils is known as


Answer :

Paleobotany
Anatomy
Palaeontology
Ornithology


Question :

Some dinosaurs had feathers although they could not fly
but birds have feathers that help them to fly. In the context
of evolution this means that


Answer :

reptiles have evolved from birds
there is no evolutionary connection between reptiles and birds
feathers are homologous structures in both the organisms
birds have evolved from reptiles


Question :

The difference between Homologous and Analogous organs
is that


Answer :

Homologous organs have same design and function whereas analogous organs have different design and function.
Homologous organs have different design and functions whereas analogous organs have same design and functions.
Homologous organs have same design but different functions whereas analogous organs have different design but similar functions.
Homologous organs have different design but similar functions whereas analogous organs have same design but different functions.


Question :

How did people respond to Mendel's ideas on inherited
traits ?


Answer :

Immediately accepted by his peers.
Found to be out of date.
Thought to be far ahead of their time.
Not recognised for more than thirty years.


Question :

was a predecessor of Darwin's and developed
the theory of acquired characteristics.


Answer :

Mendel
Lamarck
Weismann
Whittaker


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)