Diversity In Living Organisms — Science STD 9 — Question

What is the general name of the waves consisting of: Crests and troughs?

Give two examples of bryophytes.

Choose one term from the following which includes the other three: Aerosol, emulsion, colloid, sol.

What kind of energy is possessedby the following?
Water stored in the reservoir of a dam.

Give an example of flightless birds?

Who gave five-kingdom system of classification?

State one application of centrifugation.

Bromine particles are almost twice as heavy as chlorine particles. Which gas will diffuse faster; bromine (vapour) or chorine? Explain your answer.

What name is given to the sound waves of frequency too low for humans to hear?

Name the element used as a standard for atomic mass scale.