Plants survive in their environment through various adaptations and responses to stimuli. They respond to light by bending towards it using chemicals in their shoots. They respond to gravity by growing roots downward and stems upward. They respond to water by growing roots toward its source, like mangrove trees. Plants adapt to their environments through structures like cacti using thick waxy covers and spines to conserve water in dry deserts or trees growing large leaves to catch sunlight in shaded forests. They also go dormant during extreme weather, stopping growth and photosynthesis until conditions improve.

1. How do plants survive in
the environment?

2. Stimulus
Anything in an environment that causes a
living thing to respond
GravityLightWater

3. - We close our eyes when the light is directed at us.

4.  When we put water for plants, they grow.

5.  Gravity always pulls us down to the earth again
when we jump up high.

6. Tropism
It is the response of a plant to
something in its environment

7. Plants respond to water by:
- Growing their roots toward the water’s
resource.
- Example:
Mangrove tree

8.  Bending towards the source of light through
chemicals found in the tip of their shoots.
 Example:
Plants respond to light by:

9.  Roots grow downwards “to the same direction as
the pull of the gravity”, but stems grow upwards
“opposite to the direction of the gravity”
Plants respond to gravity by:

10. Adaptation
Structure or a behavior that helps
a living thing to survive in its
environment

11. Adaptation in the Desert
Cactus plant
Stem
-It has soft tissues that
hold water like a sponge.
- It also has a thick, waxy
cover to keep the water
inside.
- It has sharp spines that
protect it from being
eaten by animals.

12. Adaptation in the Forest
Tropical rainforest

13. - In the tropical rainforest,
there are many trees &
leaves growing next to each
others, so they can block
‘prevent” the sun light
from reaching to the plants
at the bottom.
- So plants at the bottom
adapt by having large
leaves to catch the sun light.

14. - Tropical rainforests get
much rain all the year,
this too much rain can
damage the leaves, so
there is a drip tip at the
end of each leaf to help
rain water to fall off
quickly.

16. - Temperate forests don’t have much rain as the
tropical rainforest, so trees in the temperate forest
adapt by losing their leaves in the fall to
save water.

17. Dormancy
 A resting period in which life processes stops.
Photosynthesis stops
Growing stops

19. Dormancy
 Just like a seed stays dormant until
the conditions are right
Then Photosynthesis starts
And Growth starts

20. Dormancy
 It happens because of
Extreme weather conditions
 Very cold weather
 Very dry weather