Following are the two statements regarding the origin of life

I.	The earliest organisms that appeared on the earth were non-green presumably anaerobes.
II.	The first autotrophic organisms were the chemoautotrophs that never released oxygen.

Of the above statements which one of the following options is correct?

1.	II is correct but I is false
2.	Both I and II are correct
3.	Both I and II are false
4.	I is correct but II is false

The wings of a bird and the wings of an insect are

Which of the following are most suitable indicators of SO₂ pollution in the environment?

1. Lichens

2. Conifers

3. Algae

4. Fungi

Which of the following had the smallest brain capacity?

1. Homo erectus

2. Homo sapiens

3. Homo neanderthalensis

4. Homo habilis

A population will not exist in Hardy-Weinberg equilibrium if

1. individuals mate selectively

2. there are no mutations

3. there is no migration

4. the population is large

A location with luxuriant growth of lichens on the trees indicates that the:-

1. trees are very healthy

2. trees are heavily infested

3. location is highly polluted

4. location is not polluted

In a population of 1000 individuals 360 belongs to genotype AA, 480 to Aa and the

remaining 160 to aa. Based on this data, the frequency of allele A in the population is

1. 0.4

2. 0.5

3. 0.6

4. 0.7

Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and

forelimbs of bats used in flying are an example of

1. analogous organs

2. adaptive radiation 

3. homologous organs

4. convergent evolution

Which one of the following are analogous structures?

The process by which organisms with different evolutionary history evolve similar

phenotypic adaptations in response to a common enviroment challenge, is called 

1. natural selection 

2. convergent evolution 

3. non-random evolution 

4. adaptive radiation