PSLE Science Biology Topics 2

Question 1

What type of reproduction involves only one parent?

Accepted Answer

Asexual reproduction

Answer

Asexual reproduction involves only one parent and produces offspring that are genetically identical to the parent.

Question 2

Which of the following is a mammal?

Accepted Answer

Dolphin

Answer

Dolphins are mammals — they are warm-blooded, breathe air, give birth to live young, and feed them milk.

Question 3

What is the process by which living organisms break down food to release energy?

Accepted Answer

Respiration

Answer

Respiration is the process where cells break down glucose using oxygen to release energy, producing carbon dioxide and water.

Question 4

Which part of the human body is responsible for pumping blood?

Accepted Answer

Heart

Answer

The heart is a muscular organ that pumps blood throughout the body, delivering oxygen and nutrients to cells.

Question 5

What are the basic units of life?

Accepted Answer

Cells

Answer

Cells are the basic structural and functional units of all living organisms. All living things are made up of cells.

PSLE Practice Test