Darwin got the idea of ‘common descent with modification’ as evolution initially from his observations on:
1. geographic distribution of species
2. fossil records
3. comparative embryology
4. comparative biochemistry

Subtopic:  Darwin's Theory | Summary of Darwin's Theory | Additional Theories of Darwin |
 79%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

Dinosaurs became extinct during the geological period:
1. Carboniferous
2. Jurassic
3. Cretaceous
4. Tertiary

Subtopic:   A BRIEF ACCOUNT OF EVOLUTION |
 52%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Plica semilunaris on the inside corner of the eye and, muscles in the pinna are:

1.analogous structures2.homologous structures
3.vestigial structures4.phylogenetic structures

Subtopic:  Concept of Organic Evolution: Evidence |
 80%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

The dinosaurs suddenly disappeared about:
1. 50 mya
2. 65 mya
3. 75 mya
4. 90 mya

Subtopic:  Evolution Prior to Ape Man | Origin of Life |
 86%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


During which period of the geological time scale did the first seed plants evolve?
1. Carboniferous
2. Triassic
3. Jurassic
4. Cretaceous

Subtopic:   A BRIEF ACCOUNT OF EVOLUTION |
 52%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

The dominant plants during the Jurassic period were:
1. Bryophytes and Ferns
2. Gymnosperms
3. Monocots
4. Dicots

Subtopic:   A BRIEF ACCOUNT OF EVOLUTION |
 62%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

Penicillin used to be very effective against a large number of bacteria when introduced initially but now many bacteria have developed resistance to it. This is because:
1. penicillin causes gene mutations, some of which are beneficial.
2. previously resistant forms survived and reproduced better than non-resistant forms.
3. the hospital environment inhibits competition among bacteria.
4. penicillin triggers the synthesis of resistant proteins.

Subtopic:  Concept of Organic Evolution: Evidence |
 79%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

The wings of birds, the forelegs of a horse, and the upper limbs of humans are:

1.analogous structures2.homologous structures
3.vestigial structures4.phylogenetic structures

Subtopic:  Concept of Organic Evolution: Evidence |
 80%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


In some African populations, the frequency of the sickle cell allele in the human population is much higher than normal. This can be an example of:

1.gene flow2.heterozygote advantage
3.genetic drift4.nonrandom mating

Subtopic:  Hardy Weinberg Law |
 76%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

advertisementadvertisement

If you visit Africa you will find an amazing variety of species of living organisms. But you will also notice that different parts of the continents have different biodiversity. This is because the different areas of Africa will have different:

1.evolutionary mechanisms2.ancestors
3.environments4.evolutionary times

Subtopic:  Definition & Types of Evolution |

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints