P.6 GS Book 5 Ch 3-4

Which of the following is NOT a cause for the decreasing number of animals?

• Over-hunting

• Pollution caused by urban development

• Over-exploitation of natural resources

• Growth of plants

If one species in a food chain disappears, what may happen to the other species? (There can be more than one answer.)

• Species higher up in the food chain may increase because there are fewer predators.

• Species lower down in the food chain may die because of a lack of food.

• Species higher up in the food chain may die because of a lack of food.

• Species lower down in the food chain may increase because there are fewer predators.

Which of the following is not an impact of urban development on the natural environment? 

• Loss of habitats

• Animals facing extinction

• Worsened water quality

• Fresher air

Which of the following shows the feeding relationship among living things?

• Photosynthesis

• Urban development

• The food chain

• Respiration

Which of the following animals do NOT live on tropical grasslands?

A.

B. C.

D.

• Orang-utans

• Zebras

• Giraffes

• Jackals

Which of the following animals do NOT have skin colour that matches the environment?

• Harp seals

• Lions

• Grasshoppers

• Hummingbirds

Tropical __________ and tropical rainforest have a great variety of animals.

Avoid using __________ products can protect biodiversity.

How do common five-ring butterflies protect themselves?

• Protective colouration

• Mimicry

• Warning patterns

• Living in groups

How do leafy sea dragon protect themselves?

• Protective colouration

• Warning patterns

• Mimicry

• Living in groups