Gravitation — Science STD 9 — Question

The taxonomic term taxon can substitute for any rank in the classification.

State whether the following statements are true or false: Alcohol can be separated from a mixture of alcohol and water by a separating funnel.

Blue green algae have prokaryotic cells.

During the course of evolution several species vanished from the surface of the Earth. (True/ False)

State whether the following statement is true or false:
Solid carbon dioxide is stored under low pressure.

State whether the following statements are true or false: A sodium ion has positive charge because it has more protons than a neutral atom.

State whether the following statement is true or false: Radioactive isotope of iodine is used for making the medicine called tincture iodine.

Amoeba is a multicellular organism.

Personal hygiene is basic to prevent infectious disease.

An environmental stress upsets the normal physiological functioning of the organisms.