Name the pioneer species on a bare rock. How do they help in establishing the next type of vegetation. Mention the types of climax community that will ultimately get established.

Name the pioneer species organisms on a bare rock.

How do pioneer species help in establishing the next type of vegetation?

Name the two special types of lymphocytes in humans. How do they differ in their roles in immune response?

Name the pioneer and the climax species in a water body. Mention the changes observed in the biomass and biodiversity of the successive seral communities developing in the water body.

The gradual and predictable change in the species composiiton of a given area is called ecologial succession. What do you understand with the pioneer and climax community in this context?

In an association of two animal species, one is a termite which feeds on wood and the other is a pratozoan Trichonympha present in the gut of the termite. What type of association they establish?

Explain how does: A primary succession start on a bare rock and reach a climax community?

Given below is a table depicting population interactions between species A and Species B. Name the types of interactions (a) and (b) in the above table. Justify giving three reasons how the type of interaction (b) is important in an ecological context.

Write the electron dot structure for sodium and chlorine atoms. How do these form a chemical bond? Name the type of bond so formed. Why does compound so formed has high melting point?

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