Trắc nghiệm -4

What is the main function of white blood cells in the human body?

• Carry oxygen

• Fight infections

• Digest food

• Control movement

Which part of the plant carries water from roots to leaves?

• Leaf

• Stem

• Flower

• Fruit

What does the digestive system do?

• Helps us breathe

• Pumps blood

• Breaks down food

• Controls movement

What is the main source of energy for all living things on Earth?

• Moon

• Water

• Wind

• Sun

Why are bees important to the environment?

• They make loud noise

• They pollinate plants

• They eat pests

• They dig tunnels

What happens if a food chain is broken?

• Animals grow faster

• The ecosystem may be damaged

• New species appear

• Plants produce more fruit

Which of these is an example of a mammal?

• Snake

• Chicken

• Dolphin

• Butterfly

What helps reduce soil erosion on hills?

• Cutting trees

• Overgrazing

• Planting grass and trees

• Building more roads

What is the purpose of recycling?

• To waste more materials

• To increase pollution

• To reuse and reduce waste

• To throw away plastics

Which of the following helps protect endangered animals?

• Deforestation

• Hunting in the wild

• Nature reserves

• Selling animals at markets