Science Year 5 (The Survival of Species of Plants)

Why plants disperse fruits or seeds through dispersal agents?

• To ensure the survival of their species.

• To provide food for other animals.

• To compete with other plants.

• To defend themselves from enemies.

The picture above shows the seed of angsana. What is the method of dispersal of the seed?

• Water

• Wind

• Humans or animals

• Explosive mechanism

The statement above shows a characteristic of a seed. Based on the statement above, what is the dispersal agent?

• Water

• Wind

• Humans or animals

• Explosive mechanism

What is the characteristics of a coconut?

• Able to float on water.

• Waterproof, having husks and air spaces.

• Light, big and having husks.

• Waterproof and having edible husks.

How does papaya disperse its seeds?

• Wind

• Water

• Humans or animals

• Explosive mechanism

Why durian have edible, bright-coloured fruits?

• To provide food for humans and animals.

• To attract humans and animals to eat the fruits and help to disperse the seeds.

• To produce food as a by-product of photosynthesis.

• To defend themselves from enemies with their sharp thorns.

What is the dispersal agent of the plants above?

• Explosive mechanism

• Humans or animals

• Wind

• Water

Why coconut floats?

• Because the flesh (isi kelapa) is light.

• Because its tree grows by a beach.

• Because it is not heavy.

• Because it has husks that trap air and waterproof skin.

This is shorea. What will happen if the shorea seed is heavy and big?

• It cannot be carried and dispersed by the wind.

• It cannot be eaten and dispersed by animals.

• It loses the ability to explode.

• It will sink into the sea.

Why should plants disperse their seeds and fruits?

• To improve their growth.

• To ensure the survival of their species.

• To improve the competition among the seedlings.

• To make the plants more resilient to diseases.