Species separated by geographical barriers are called:
1.  Allopatric
2.  Sympatric
3.  Sibling
4.  Endemic

Subtopic:  Concept of Speciation |
 53%
AIPMT - 1998
Please attempt this question first.
Hints

Age of Dryopithecous is estimated to be:
1.  2.46 crore years
2.  2.46 lakh year
3.  1 lakh year
4.  1 crore year

Subtopic:  Introduction to Human Evolution |
AIPMT - 1998
Please attempt this question first.
Hints

Which of the following statement is true:
1.  Homo erectus is direct ancestor of Homo sapiens
2.  Neanderthal man is direct ancestor of modern man
3.  Australopithecous is direct ancestor of modern man
4.  Fossils of cromagnon man first found in Ethiopia

Subtopic:  Introduction to Human Evolution |
 55%
From NCERT
AIPMT - 1998
Please attempt this question first.
Hints
Please attempt this question first.

Evolution of heart from one to two, three and four chambered proves:
1.  Biogenetic law of Haeckel
2.  Lamarckism
3.  Hardy weinberg's law
4.  Neo Darwinism

Subtopic:  Embryological Evidence of Evolution |
 63%
AIPMT - 1998
Please attempt this question first.
Hints
Please attempt this question first.

Genetic drift mainly takes place in:
1.  Small population
2.  Large population
3.  Oceanic population
4.  Never occurs

Subtopic:  Sources of Variation: 1 |
 78%
AIPMT - 1998
Please attempt this question first.
Hints

In present times, the origin of life is not possible from inorganic compounds due to:
1. Non-availability of raw material
2. High concentration of O2 in the atmosphere
3. Decrease in temperature
4. Excess of pollution

Subtopic:  Origin of Life |
 65%
From NCERT
AIPMT - 1998
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

On Galapagos island, Darwin observed variation in beaks of birds (Darwin's finches) and he concluded:
1.  Inter species variation
2.  Intraspecies variation
3.  Natural selection according to food
4.  Inheritance of acquired characters

Subtopic:  Palentological Evidences of Evolution |
 67%
From NCERT
AIPMT - 1998
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Two opposite forces operate in the growth and development of every population. One of them is related to the ability to reproduce at a given rate. The force opposite to it is called:
1.  Fecundity
2.  Environmental resistances
3.  Biotic control
4.  Mortality

Subtopic:  Modern Theory of Evolution |
 58%
AIPMT - 1998
Please attempt this question first.
Hints

Homologous organs are:
1.  Wings of cockroach and wings of bats
2.  Wings of insects and wings of birds
3.  Air bladder of fishes and lungs of frog
4.  Pectoral fins of fishes and forelimbs of horse

Subtopic:  Palentological Evidences of Evolution |
 60%
AIPMT - 1999
Please attempt this question first.
Hints
Please attempt this question first.

Reptiles like mammals originated in:
1.  Jurassic
2.  Triassic
3.  Cretaceous
4.  Permian

Subtopic:  Concept of Organic Evolution: Evidence: 2 |
From NCERT
AIPMT - 1999
Please attempt this question first.
Hints
Please attempt this question first.