PSLE Science Biology Topics 4

Question 1

What is pollination?

Accepted Answer

The transfer of pollen from anther to stigma

Answer

Pollination is the transfer of pollen grains from the anther (male part) to the stigma (female part) of a flower.

Question 2

Which of the following is an example of a producer in a food chain?

Accepted Answer

Grass

Answer

Grass is a producer because it makes its own food through photosynthesis. Producers form the base of food chains.

Question 3

What is the function of white blood cells?

Accepted Answer

To fight germs and diseases

Answer

White blood cells are part of the immune system. They fight bacteria, viruses, and other pathogens that enter the body.

Question 4

Which of the following is a characteristic of amphibians?

Accepted Answer

They can live on land and in water

Answer

Amphibians (like frogs and toads) can live both on land and in water. They typically start life in water and move to land as adults.

Question 5

What is the largest organ of the human body?

Accepted Answer

Skin

Answer

The skin is the largest organ of the human body. It protects internal organs, regulates temperature, and provides sensation.

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