STD 12 - 6. evolution - CBSE STD 12 Science Biology Questions

383

Questions

1

Question groups

5

Question types

01

M.C.Q (1 Marks)

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Sample Questions

STD 12 - 6. evolution questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q (1 Marks)1 Mark

The flippers of the Penguins and Dolphins are the example of the

A
Natural selection
✓
Convergent evolution
C
Divergent evolution
D
Adaptive radiation

Answer: B.

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Q 2M.C.Q (1 Marks)1 Mark

Given below are some stages of human evolution.

Arrange them in correct sequence. (Past to Recent)

$A$. Homo habilis $B$. Homo sapiens

$C$. Homo neanderthalensis $D$. Homo erectus

Choose the correct sequence of human evolution from the options given below:

A
$B-A-D-C$
B
$C-B-D-A$
✓
$A-D-C-B$
D
$D-A-C-B$

Answer: C.

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Q 3M.C.Q (1 Marks)1 Mark

Which one of the following factors will not affect the Hardy-Weinberg equilibrium?

A
Genetic drift
B
Gene migration
✓
Constant gene pool
D
Genetic recombination

Answer: C.

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Q 4M.C.Q (1 Marks)1 Mark

Select the correct group/set of Australian Marsupials exhibiting adaptive radiation.

A
Lemur, Anteater, Wolf
B
Tasmanian wolf, Bobcat, Marsupial mole
✓
Numbat, Spotted cuscus, Flying phalanger
D
Mole, Flying squirrel, Tasmanian tiger cat

Answer: C.

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Q 5M.C.Q (1 Marks)1 Mark

Natural selection where more individuals acquire specific character value other than the mean character value, leads to:

✓
Directional change
B
Disruptive change
C
Random change
D
Stabilising change

Answer: A.

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