MEDIUM
Earn 100

Read the statements given below and identify the suitable option:

(i) Eye of octopus and mammals are homologous.

(ii) Sweet potato and potato are analogous.

(iii) Thorns of Bougainvillea and tendrils of Cucurbita are homologus.

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Important Questions on Evolution

MEDIUM
Which of the following does not show divergent evolution?
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The similarity of bone structure in the forelimbs of many vertebrates is an example of:
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Convergent evolution is illustrated by ___.
EASY
Which of the following is an example of convergent evolution?
EASY
Which one of the following are analogous structures?
EASY
In Bougainvillea and Cucurbita, the axillary bud is modified into thorn and tendril respectively. This is an example of
EASY
Flippers of Penguins and Dolphins are examples of
HARD
Give the difference between homologous and analogous organs with examples. Which type of evolution is shown by these two organs?
EASY
The ________ theory attempts to explain to us the origin of the universe.
MEDIUM
Organic compounds first evolved in earth required for origin of life were :
MEDIUM

Match List-I with List-II.

List-I List-II
(a) Adaptive radiation (i) Selection of resistant varieties due to excessive use of herbicides and pesticides
(b) Convergent evolution (ii) Bones of forelimbs in Man and Whale
(c) Divergent evolution (iii) Wings of Butterfly and Bird
(d) Evolution by anthropogenic action (iv) Darwin Finches
EASY
Which of the following structures is homologous to the wing of a bird?
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Assertion (A): Homologous characters are originated from a different ancestor

Reason (R): Wings of sparrow and finches are homologous

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Statement I: Organs which have similar structure and origin but perform different functions are called analogous organs.
Statement II : The sudden appearance of some vestigial organs in a better developed condition is called atavism

The correct option among the following is

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Thorns of Bougainvillea and tendril of Cucurbita are homologous organs because of _____.
MEDIUM
What are homology and analogy? Explain them with examples.
MEDIUM
What are homologous organs? Give one example each from plant and animal.
EASY

Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action?

(a) Darwin’s Finches of Galapagos islands.
(b) Herbicide resistant weeds.
(c) Drug resistant eukaryotes.
(d) Man-created breeds of domesticated animals like dogs.

EASY
The wings of a bird and the wings of an insect are:
EASY
Analogous structures are a result of: