Diseases Cause and Control — BIOLOGY STD 9 — Question

Explain briefly, the role of the following health aids:
Antiseptics

Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Amoeba - Nucleus, tentacle, food vacuole

Name the following:
The vaccine for preventing tuberculosis.

Define the following term:
Assimilation

Starting from the nostrils, trace the path in sequence which the inspired air takes until it reaches the air sacs.

Name the following:
Germ of germ-substance introduced into the body to prevent occurrence of an infectious disease.

Define : Locomotion

Name three chemicals used as food preservatives.

Parts of the appendicular system.

Name the following:
Thick-walled isodiametric dead cells