STD 12 - 9. biotechnology principlas and process — BIOLOGY STD 12 Science — Question

Which of the following, grows symbiotically in the leaves of water fern?

Frequency of crossing over in a chromosome is an index of

The living organisms of all ecosystems collectively consitute

If the age distribution (per cent individuals of a given age or group) is plotted for the population, the resulting structure is called a/ an.

For nitrogen fixation in soil, we may use :

Reproductive heaith is the well-being of

Lichen is the pioneer vegetation on which succession:

A prokaryotic autotrophic nitrogen-fixing symbiont is found in:

Australopithecines probably lived in the