P6 Science Revision 11 (Life Science)

What is generally common among insects and birds?

• They have three body parts.

• They reproduce by laying eggs.

• Their young look like the adults.

• They have the same type of body covering.

The diagram shows a frog swimming in the water.

Which of the following characteristics help the frog swim fast in the water?

• 1

• 2

• 3

• 4

Butterflies visit flowers. The butterflies benefit directly by ____________.

• dispersing the seeds

• pollinating the flowers

• feeding on the nectar

• laying eggs on the flowers

Hanwei classified three types of cells as shown below.

What are questions A and B?

• 1

• 2

• 3

• 4

The diagram below shows a pond habitat.

How many populations of producers and consumers are present in this habitat?

• 1

• 2

• 3

• 4

What would happen large areas of forests are removed?

• more rain would fall

• more soil would be eroded

• more oxygen would be given out to the air

• more carbon dioxide would be absorbed from the air

Nurul conducted an experiment using muddy water from different parts of a river, P, Q, R and S.

She placed a coin at the bottom of a container and poured in the water taken from P until the coin could no longer be seen as shown in the set-up below. Then she recorded the height h of the water.

She repeated the experiment with the water taken from Q, R and S. The results are shown in the table.

Nurul learnt that plants in the water grew well when there was sunlight. At which part of the river would there be the least number of plants in the water?

• P

• Q

• R

• S

Mr Lim put a layer of dead leaves and then a black plastic sheet above the dead leaves around plant A.

Which one of the following is not a reason for Mr Lim's action?

• to add fertiliser to the soil

• to reduce evaporation of water from the soil

• to prevent caterpillars from eating plant A

• to prevent grass from growing near plant A

Jumat used the set-up below to measure the amount of oxygen taken in by a grasshopper. He measured the movement of the drop of red ink after every minute.

Substance M absorbed a certain gas. What was this gas?

• oxygen

• nitrogen

• water vapour

• carbon dioxide

Swee Lian drew Diagrams 1 and 2 below showing the reproductive parts human respectively.

Which of the following represent the ovaries in Diagrams 1 and 2?

• A and C

• A and D

• B and C

• B and D