Draw a neat, labelled diagram of a thermos flask. Explain how the loss of heat by all three modes of heat transfer is minimised in a thermos flask.

In vacuum, heat energy is transferred through _____.

(Choose from conduction/radiation)

Give one word for the following:

The plant that live in association with other species for food.

Give one word for the following:

The finger-like projections in amoeba's body _____.

Give one word for the following:

Substances that do not conduct heat very well _____.

(Choose from conductors/insulators)

Give one word for the following:

Process of respiration that takes place in the absence of oxygen.