SSLC (English Medium) Class 8 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Hydrocarbons are present in different ______ and ______.

______ is a blue-green algae.

Polvsiohonia is a ______ alga.

______ is used in space travel.

______ is an edible algae.

Classification of algae was given by ______.

Minute algae floating on the surface of the water are called ______.

______ is an example of symbiosis between algae & fungi.

______ got from algae is used to prepare growth medium in laboratories.

Agar-Agar is extracted from red algae.

The cell wall of algae is made up of a chemical substance called chitin.

What is phytoplankton?

Mention two forms of algae with examples.

Mention two salient features of algae.

List out the base quantities with their units.

Consider the statement given below and choose the correct option.

Assertion: Sharp knives are used to cut the vegetables.

Reason: Sharp edges exert more pressure.

Consider the statement given below and choose the correct option.

Assertion: Broad straps are used in bags.

Reason: Broad straps last for long.

Which of the following has curved reflecting surface?

The spherical mirror with a reflecting surface curved inward is called

The spherical mirror used as a rear view mirror in the vehicle is