I. Dispersal of Fruits

1
I. Dispersal of Fruits Seeds
2
Dispersal

• It is the scattering of fruits and seeds to other
  places.

3
Importance of Fruits and Seeds Dispersal

• This enables new plant seedlings to grow better.

4
What are the characteristics of fruits and seeds
that are easily carried by wind?
small
dry
very light
5
Fruits with winglike structures
narra
apitong
6
Other fruits with parachute like structures
kogon
kapok
7
Fruits/ Seeds carried by water
coconut and kalumbobot
8
Fruits/ Seeds dispersed by animals
9

• Bright-colored and sweet fruits attract animals.

• When these animals eat the fruits, they swallow
  the seeds and later expel them with their feces.

• The seeds grow into new plants if the conditions
  in the place are favorable.

10
Fruits with hooks, bristles and sticky surfaces
attach themselves to the fur, hair or feathers of
some animals
This is another way by which animals scatter
fruits or seeds.
11
Some fruits are explosive. When the seeds
inside them are ready to grow, the fruits
explode and scatter the seeds. The fruits of
ipil-ipil
camachile
12
Answer the following questions in your notebook

• What is the meaning of dispersal?
• What would happen if the seeds of plants were not
  dispersed?
• What are the characteristics of fruits and seeds
  that are dispersed by wind? By water?

13
Parts of the Seed
Dicot or Dicotyledons
14
Parts of the Seed
Monocot or monotocotyledons
15
Common Parts of the Seed

• Seed Coat
• Embryo
• Endosperm

16
Meaning of Parts of the Seed
seed coat

• It is tough and waterproof.
• It covers and protects the embryo.

endosperm

• It is the food supply of the seed.

17

• Or the seed leaf, absorbs the food in the
  endosperm and transports it to the embryo.

cotyledon

• It is the first part of the seedling.
• It becomes the primary root.

radicle
18

• It is the germinating seedling of a plant.
• (stem)

hypocotyl
hilum

• It is the germinating seedling of a plant.
• (stem)

19
Please answer Activity Sheets 1.8-1.10
20
III. Seed Germination
21
Germinate

• Begin to grow.

How does a seed Germinate?

• A seed needs three things to germinate

1- water
2- oxygen
3- right temperature