Characteristics Of Seeds And Fruits 181g6c

SEED DISPERSAL Seed dispersal happens in many different ways. Nature is so clever, just listen while we say: Parachutes, dandelions, feathers, wild clematis.

Sycamore, Ash and Lime trees have wings. When a little pea pod bursts With a mini explosion,

The seeds can scatter just as if they had springs!

- Donna JMinto

Wild Clematis

Ragwort (Parachutes type)

Sycamore (Wing-like structure)

TEST YOURSELF: 1.Name the four ways of seeds or fruits dispersal. 2.Can you state 2 examples for each types of seeds or fruits dispersal.

WHERE DID THE SEEDS COME FROM??

What is the characteristic that makes the seeds stuck to your socks??

Coconut fruits are dispersed by water

State the characteristics of the coconut fruit which enable its seed to be dispersed by water.

The fruits may travel thousands of kilometers across the sea before they germinate and grow on land.

These are the characteristics of fruits and seeds that are dispersed by WATER.

Seeds dispersed by WIND

The seeds are carried away to other places to germinate and grow.

Lalang

Cotton

What are the characteristics of seeds that are dispersed by WIND ?

SEED DISPERSAL BY ANIMAL

Animals love to eat fruits. After eating the flesh of the fruits, the animals throw away the seeds.

The seeds may germinate and grow into new plants.

How do animals help to disperse the burdock seeds?

The hooks of the burdock seeds may catch on the fur or feather of animals.

The seeds are carried dropped in other places

and

These are the characteristics of seeds that are dispersed by ANIMALS.

Rubber Seeds

Petai

As the seeds in the pod become ripe, the pod dries up.

This causes the pod to explode. The seeds in the pod scatter away from the parent plant.

These are the characteristics of seeds that are dispersed by EXPLOSIVE MECHANISM

SOLVE THE PROBLEM… 1. Which is the best fabric for collecting hooked seeds? 2. Is it true that all large plants grow from large seeds? 3. Do all the fruits contains the same number of seeds? Examine a range of fruits to try and find out the answer.

ANSWER 1 Fabrics Polyester : Curtain

Linen: Handkerchief, Table cloths, Pillowcase, Apron

Cotton: Bath towel, Socks, T-shirt, Underwear.

ANSWER 2 Big seeds often produce seedlings which have a higher growth rate (they grow faster) than seedlings from smaller seeds but this doesn't necessarily mean that they will go on to produce a bigger plant overall. The size your pumpkins will grow to depends on a lot of different things that are likely to happen to them throughout their life-time, such as how often you water them, whether you give them fertiliser ("plant food") and how crowded they are.

ANSWER 3

NO

QUIZ 1. State the characteristics of the seeds and fruits.

Seed dispersed by water Light and able to trap air Waxy surface

Seed dispersed by animals Have hooks Bright-colour Nice smell Sweet & Juicy

Seed dispersed by explosive mechanism

In a pod

Seed dispersed by wind

Question 2:

Answer: A

QUESTION 3 Let’s assume the marble and the ping pong ball are seeds. How do we design the marble so it can be dispersed by animals?

QUESTION 4

Answer: B

SUMMARY