The first living organisms that appeard on the planet, according to the most accepted

view, were

1. anaerobic

2. aerobic

3. photosynthetic

4. none of the above

Study of fossils is called

1. ecology                     

2. angiology

3. exobiology                 

4. none of these

The early-stage human embryo distinctly possesses

1. gills                             

2. gill slits

3. external ear (pinna)       

4. eyebrows                             

Genetic drift operates only in

1. island population 

2. smaller population 

3. larger population

4. none of these.

The cranial capacity was largest among the 

The random changes in the allele frequency occurring by chance is termed as

1. genetic variability

2. genetic drift

3. gene migration

4. mutation

Which of these are considered most essential in the origin of life?

1. Enzymes

2. Nucleic acids

3. Carbohydrates

4. Proteins

A baby has been born with a small tail. It is a case exhibiting

1. retrogressive evolution

2. mutation 

3. atavism

4. metamorphosis.

The 'devonian period' is considered to be as

1. age of fishes

2. age of amphibians

3. age of reptiles

4. age of mammals.