Q. No.A population of a species invades a new area. Which of the following condition will lead to Adaptive Radiation?
1.
Area with a large number of habitats having very low food supply
2.
Area with a single type of vacant habitat
3.
Area with many types of vacant habitats
4.
Area with many habitats occupied by a large number of species
Which of the following statements is correct about the origin and evolution of men?
| 1. | Agriculture came around 50,000 years back. |
| 2. | The Dryopithecus and Ramapithecus primates existing 15 million years ago, walked like men. |
| 3. | Homo habilis probably ate meat. |
| 4. | Neanderthal men lived in Asia between 100000 and 40000 years back. |
In Australia, marsupials and placental mammals have evolved to share many similar characteristics. This type of evolution may be referred to as:
1. Adaptive Radiation
2. Divergent Evolution
3. Cyclical Evolution
4. Convergent Evolution
A person with sickle cell anemia is:
| 1. | more prone to malaria. | 2. | more prone to typhoid. |
| 3. | less prone to malaria. | 4. | less prone to typhoid. |
Which of the following pairs of organs do not represent analogous organs?
1. Eye of an octopus and eye of a mammal
2. Flippers of penguin and flippers of dolphin
3. Wings of bat and forelimbs of humans
4. Wings of birds and wings of butterfly
Both Charles Darwin and A.R.Wallace were influenced by the:
1. writings of J.B.S.Haldane on the origin of life
2. findings of Urey and Miller experiments
3. findings on the Galapagos Islands
4. essay on human population by T.R.Malthus
For the stability of the organic compounds, Oparin opined that probably:
1. UV radiation never reached the surface of the primeval Earth
2. the primitive Earth was in a molten state
3. the primitive Earth atmosphere was reducing rather than oxidizing
4. plenty of energy sources were available for chemical reactions to occur
Good examples of recapitulation theory is
(1) The embryonic membrane of reptiles
(2) Tadpole larva of frog
(3) Placenta of mammals
(4) Canine teeth of the dog
Match the hominids with their correct brain size:
| Column I | Column II | ||
| (a) | Homo habilis | (i) | 900 cc |
| (b) | Homo neanderthalensis | (ii) | 1350 cc |
| (c) | Homo erectus | (iii) | 650-800 cc |
| (d) | Homo sapiens | (iv) | 1400 cc |
Select the correct option.
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iv) | (iii) | (i) | (ii) |
| 2. | (iv) | (i) | (iv) | (ii) |
| 3. | (iii) | (ii) | (i) | (iv) |
| 4. | (iii) | (iv) | (i) | (ii) |
In a species, the weight of a newborn ranges from 2 to 5 kg. 97% of the newborns with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 kg to 5 kg die. Which type of selection process is taking place?
1. Cyclical selection
2. Directional selection
3. Stabilizing selection
4. Disruptive selection
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