SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

______ is declared as Global Iodine Deficiency Day.

The interval between infection and the first appearance of the disease is called the ______ period.

______ is the Father of Bacteriology.

An infection develops when these pathogens enter the human body.

Assertion: Cancer is a non-infectious disease.
Reason: Cancer is caused by external factors like pathogens invading the body.

Assertion: An infection develops when pathogens enter the human body.
Reason: Pathogen enters the human body through contaminated air, water, food, soil, physical contact, etc.

What is the incubation period?

Aquaponics is a technique of growing plants with their root supplied with moisture present in the air.

Explain briefly about Aquaponics.

Root caps are a characteristic adaptation of ______.

The presence of ______ in leaves traps the moisture and lessens water loss inMesophytes.

The function of stomata in leaves of mesophytes is to prevent ______.

In bats, the excessive heat absorption dining the day is caused by ______.

In bats modified forelimbs serve as ______.

______ of hind limbs in bat provides a tight grasp when the animals are suspended upside down.

Bats are ______ blooded animals

Earthworm belongs to Phylum ______.

Write the adaptations of mesophytes.

Define velocity.

Define velocity.