EASY
Earn 100

A researcher found petrified dinosaur faeces. Which one of the following is unlikely to be found in this fossil?

50% studentsanswered this correctly

Important Questions on Evolution

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The primary gases that were used by Miller in his experiment are
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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

MEDIUM

Study the following statements
I) Gene that codes for the synthesis of dystrophin is the largest human gene
II) Chromosome 21 contains the highest number of genes
III Endonucleases are used to cut the DNA at specific region
IV) Whole hereditary information encoded in DNA of an organism is called genome

Among the above identify the correct statements

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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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Which of the following had the smallest brain capacity?
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
MEDIUM

Statement (S): Less than 2% of the human genome encodes for functional units called 'proteins'.

Reason (R): The majority of the human genome is regulatory in nature.

Which of the following is true?

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Mention one example each from plants and animals exhibiting divergent evolution.
MEDIUM
Expressed sequence tags (ESTs) refers to:
EASY
Which one of the following are analogous structures?
MEDIUM

Assertion (A): There is a sufficient reason to believe that first cells on the planet lived in an atmosphere lacking oxygen.
Reason (R): Thus even all living organisms retain the enzymatic mechanism to completely oxidise glucose without the help of oxygen. 

The correct option among the following is:

MEDIUM
Match the following
  LIST-I   LIST-II
A The golden age of reptiles I Carboniferous period
B Age of amphibians II Cenozoic era
C The golden age of fishes III Mesozoic era
D Age of mammals IV Devonian period
    V Silurian period

The correct match is

EASY

Study the following statements regarding human genome project.
I. Average gene consists of 3000 base pairs.
II. 50 percent of the genome codes for proteins.
III. Chromosome 1 has highest number of genes.
IV. Repeated sequences make up small portion of human genome.

Which of the above are correct?

EASY
Select the INCORRECT statement from the following.
EASY
Differentiate between analogous and homologous structures.
MEDIUM
Wings of birds and wings of butterflies contribute to locomotion. Explain the type of evolution such organs are a result of.
HARD
Describe S.L Miller's experiment. Comment on the observations he made and his contribution towards the origin of life on Earth.
MEDIUM
Convergent evolution is illustrated by ___.
EASY
Which of the following structures is homologous to the wing of a bird?
HARD

Match the following

  Set-I   Set-II
(A) Cyanognathus (I) Reptiles & birds
(B) Archaeopteryx (II) Amphibians & reptiles
(C) Seymouria (III) Reptiles & mammals
(D) Eusthenopteron (IV) Protochordates & fishes
    (V) Fishes & amphibians

The correct match is