SSLC (English Medium) कक्षा ९ - Tamil Nadu Board of Secondary Education Question Bank Solutions

Give an account on phylum Arthropoda.

State whether true or false. If false, correct the statement.

Bone and cartilage are two types of areolar connective tissues.

What is skeletal connective tissue? How is it helpful in the functioning of our body?

Higher Order Thinking Skill.

What is the consequence that occur if all blood platelets are removed from the blood?

Higher Order Thinking Skill.

Which are not true cells in the blood? Why?

Differentiate the following.

Absorption and Assimilation

Vitamin D is called as ______ vitamin as it can be synthesised by the body from the rays of sunlight.

How are vitamins useful to us? Tabulate the sources, deficiency diseases and symptoms of fat soluble vitamins

Which of the following is transmitted through air?

The primary organ infected during tuberculosis is ______.

Vermicompost is a type of soil made by ______ and microorganisms.

Enumerate the advantages of vermicompost over chemical fertiliser.

What are the species of earthworm used for vermiculture?

What are the sources of organic resources for vermicomposting?

The incident angle of a ray of light is 30°. The angle between the incident ray and the reflected ray is ______.

The bouncing back of light from a surface is called ______.

Why do petroleum-based products float on the surface of the water?

Hydrometer is based on the principle of ______.

Where do we use lactometers?

Name different types of Hydrometers with their applications.