Dispersal of Seeds

State the method of dispersal for this seed/ fruit.

• Wind

• Animals

• Water

• Splitting Action

The purpose of seed dispersal is for the seeds to __________.

• germinate at the same time

• move to the same place and grow

• move further away from the parent plant

• compete with one another for minerals in the soil

State the method of dispersal for this seed/ fruit.

• Wind

• Animal

• Water

• Splitting Action

What are the characteristic of the seeds dispersed by man and animals?

A: Can float on water

B: Sweet and juicy

C: Have hooks or stiff hairs

D: Have wing-like structures and are light

• A and B only

• B and C only

• C and D only

• A, B and C only

Jeff grew his plant in a small pot. He placed the pot outside and watered the plants every day.

However, after a few weeks, the plants died. What is the likely reason for this to happen?

• Unfertilised soil

• Not enough water

• Not placed under sunligt

• Overcrowding

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

State the characters ideal for dispersion by wind.

• Small, light and hair-like

• Small, light and sharp hooks

• Big, light and fibrous husk

• Big, light and explode

Why are angsana seeds able to be dispersed by wind?

• It is light and has wing-like structure

• It is juicy and edible

• It has a fibrous husk that makes it float

• It has dry pods that split open

Why are saga seeds able to be dispersed by splitting?

• It is light and has wing-like structure

• It is juicy and edible

• It has a fibrous husk that makes it float

• It has dry pods that split open

Why are shorea seeds able to be dispersed by the wind?

• It is light and has wing-like structure

• It has hooks to hook onto the fur of animals

• It has a fibrous husk that makes it float

• It has dry pods that split open

Why are grape seeds able to be dispersed by animals?

• It is light and has wing-like structure

• It is juicy and edible

• It has a fibrous husk that makes it float

• It has dry pods that split open