This document provides a summary of key concepts about plants and the solar system: Plants have roots that absorb water and nutrients, a stem that holds the plant upright and transports water, leaves that perform photosynthesis, and flowers that attract pollinators for reproduction. Pollination involves the transfer of pollen between male and female plant parts and can occur through insects, wind, or water. Fertilization joins pollen and egg cells to form seeds, which are then dispersed and may germinate into new plants if conditions are right. In the solar system, the sun provides light and heat, the earth rotates on its axis causing day and night and revolves around the sun causing seasons, and

1. Revision on plants lesson
Q1 ) what are the parts of the plant ?
Roots , stem ( shoot) , leaves and flower
Q2) what is the function of each ?
Roots : holds the plant into the soil / absorbs water
and nutrients from the soil
Shoot : holds the plant upright , it takes water around
the plant
Leaf : makes the food through photosynthesis
Flower :attract insects for pollination (Reproduction )

2. Revision on plants lesson
Q5) what is pollination ?
-Traveling of pollen from male part to the female part
-It has 2 types ( cross and self )
- It can happen by : human – insects and birds – wind
– water
Q6) what is Fertilization?
- Joining of the pollen and egg cell to make a seed
- The pollen sticks to the stigma –makes pollen tube
through the style until it reaches the ovary

3. Revision on plants lesson
Q7) what is Seed dispersal ?
-travelling of the seed from the ovary to the soil
- It can happen by : water – dropping – animals –
explosion- wind
Q8) what is Germination ?
- Developing of the seed into a new plant
- Seed absorbs water and coat splits , root grows
then shoot then leaves towards sunlight then
flower
- For germination : the plant needs nutrients – space
– good temp. – water

4. Q 9 draw the life cycle of the plant
1)Pollin
ation
2)
Fertiliz
ation
3) Seed
formati
on
4) Seed
dispers
al
5 )
Germin
ation
6)
Flower
formati
on

5. Q1 ) what is the Sun ?
It is a roughly spherical star, it is the largest body
in the solar system , it gives us heat & light
Q2 ) what is the Earth ?
It is a roughly spherical planet , it has an
imaginary line passing through its center ( axis
)

6. Q3 ) what is the Moon?
It is a dark body moving around the earth in 28 days reflecting the light
of the sun
It is a natural satellite
Q4) what is the rotation ? And what is revolution ?
Rotation : when earth moves around its axis & this makes day & night
Revolution : when earth moves around the sun & this makes seasons
Q5 ) what are the objects that move in the solar system ?
Comet , asteroids & dwarf planets
Q6 ) what is Meteoroid?
Very small object in space
When enters the atmoshpere : meteor
When hits the earth : meteroite
Q7 ) what is the galaxy?
It is a group of millions of stars