CTET CTET Science 2

Question 1

Which organ in the human body produces bile to aid in digestion?

Accepted Answer

Liver

Answer

The liver produces bile, which is stored in the gallbladder and released into the small intestine to help digest fats.

Question 2

What type of reproduction involves only one parent and produces genetically identical offspring?

Accepted Answer

Asexual reproduction

Answer

Asexual reproduction involves a single parent and produces offspring that are genetically identical (clones) to the parent.

Question 3

Which gas is released by plants during photosynthesis?

Accepted Answer

Oxygen

Answer

Plants release oxygen as a byproduct of photosynthesis when they convert carbon dioxide and water into glucose using sunlight.

Question 4

What is the function of the stomata in plant leaves?

Accepted Answer

Exchange of gases and transpiration

Answer

Stomata are tiny pores on plant leaves that allow gas exchange (CO₂ in, O₂ out) and regulate water loss through transpiration.

Question 5

A student observes that iron rusts faster near the seashore than inland. Which factor is most responsible?

Accepted Answer

Presence of salt in moist air

Answer

Salt (sodium chloride) in the moist coastal air acts as an electrolyte that accelerates the electrochemical process of rusting.

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