BIOLOGY Answer the following questions

State two postulates of Oparin and Haldane with reference to origin of life.

Write the probable differences in eating habits of Homo habilis and Homo erectus.

How many chromosomes do drones of honeybee possess? Name the type of cell division involved in the production of sperms by them.

State Gause's Competitive Exclusion Principle.

State two postulates of Oparin and Haldane with reference to origin of life.

Write the probable differences in eating habits of Homo habilis and Homo erectus.

How many chromosomes do drones of honeybee possess? Name the type of cell division involved in the production of sperms by them.

Why are analogous structures a result of convergent evolution?

State Gause's Competitive Exclusion Principle.

State two postulates of Oparin and Haldane with reference to origin of life.

Write the probable differences in eating habits of Homo habilis and Homo erectus.

How many chromosomes do drones of honeybee possess? Name the type of cell division involved in the production of sperms by them.

State Gause's Competitive Exclusion Principle.

Comment on the similarity between the wing of a cockroach and the wing of a bird. What do you infer from the above, with reference to evolution?

Name the common ancestor of the great apes and man.

According to Hardy – Weinberg’s principle the allele frequency of a population remains constant. How do you interpret the change of frequency of alleles in a population?

Name any two vertebrate body parts that are homologous to human forelimbs.

State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialisation period in England.

What is "fitness of an individual" according to Darwin?

State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialisation period in England.

What role does an individual organism play as per Darwin’s theory of natural selection?

According to de-Vries what is saltation?

State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialisation period in England.

Write the similarity between the wing of a butterfly and the wing of a bat. What do you infer from the above with reference to evolution?

Name the scientist who disproved spontaneous generation theory.

Mention two functions of the codon AUG.

Mention the type of evolution that has brought the similarity as seen in potato tuber and sweet potato.

What causes speciation according to Hugo de Vries?

Write the names of the following:

1. A 15 mya primate that was ape-like.
2. A 2 mya primate that lived in East African grasslands.

Write the names of the following:

1. A 15 mya primate that was ape-like.
2. A 2 mya primate that lived in East African grasslands.

Write the names of the following:

1. A 15 mya primate that was ape-like.
2. A 2 mya primate that lived in East African grasslands.

State the two principal outcomes of the experiments conducted by Louis Pasteur on origin of life.

Mark the odd one in give each of the following groups.
Bobcat, Wolf, Anteater, Spotted cuscus.

Among Ramapithecus, Australopithecines and Homo habilis - who probably did not eat meat?

Name the ancestor of modern amphibian.

Name the placental mammals corresponding to the Australian 'spotted cuscus' and Tasmanian 'tiger cat', which have evolved as a result of convergent evolution.

When was the earth supposed to have been formed and when did life appear on the earth?

Name the two forms of extinct reptiles that evolved from synapsids.

What technical term is given to the fish-like reptiles?

Name any two vertebrate body parts that are homologous to human forelimbs.

Pick out the ancestral line of Angiosperms from the list: Conifers, Seed ferns, Cycads, Ferns.

Among the five factors that are known to affect Hardy-Weinberg equilibrium, three factors are gene flow, genetic drift and genetic recombination. What are the other two factors?

Mark the odd one in give each of the following groups.
Lamarckism, Darwinism, Branching descent, Natural selection.

What do you mean by biogenesis?

The 'origin of species' was given by which scientist?

Write down the consequence of absence of genetic variations among individual of a population.

What do you mean by adaptive radiation?

The theory of spontaneous generation was dismissed by whom and why?

According to Hardy-Weinberg principle, the allele frequency of a population remains constant. How do you interpret the change of frequency of alleles in a population?

Describe one example of adaptive radiation.