Science Year 4

Science Year 4

Phothosynthesis

What did we learnt ?

• PLANTS RESPONDS TO STIMULI

• The shoot responds to light

• The root responds to gravitational pull and water

• The leaves responds to touch

BIG IDEA

WHY DO PLANTS NEED TO RESPOND TO STIMULI?

By the end of this lesson, you should be able to tell

• What is phothosynthesis

• What is needed for the process of phothosynthesis

• What are the product of phothosynthesis

All living things need food.

How about plants?

Open Ended

What does a plant need to carry out phothosynthesis?

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What does a plant need to carry out phothosynthesis?

SUNLIGHT

gets sunlight during the day

CARBON DIOXIDE

gets from air

WATER

gets from soil

CHLOROPHYLL

the colour pigments in the leaf

Plants need sunlight, chlorophyl,carbon dioxide and water

for the process of phothosynthesis

AN ANOLOGY

Comparison to real life example

Phothosyntesis means Cooking.

What do amma need to cook rice?

Amma's cooking process needs rice and water. Then, the rice cooker needs heat to cook the rice. The final product is rice with vapour

Plants phothosynthesis needs carbon dioxide and water. The chlorophyl in the leaf absrob the sunlight. The final product is glucose and oxygen.

Multiple Choice

How do plants get the carbon dioxide that they need?

• from the air

• from water

• from the soil

• from fertilizer

Multiple Choice

Leaves look green because.....

• they eat their vegetables

• to blend into their environment

• they contain chlorophyll

• they are sick

Multiple Choice

What is photosynthesis?

• The process in which humans eat their food.

• When a photographer takes a photo.

• To get your pictures from the photo lab.

• The process in which plants make their food.

Multiple Choice

What are the products of photosynthesis?

• water and carbon dioxide

• oxygen and glucose

• oxygen and carbon dioxide

• oxygen and water

Multiple Choice

The sugar in plants made by photosynthesis.

• Chlorophyll

• Water

• Glucose

• Oxygen

Multiple Choice

A living thing that can make it's own food.

• Plants

• Animals

• Humans

• Sunlight

Multiple Choice

What gas is released by plants from the process of photosynthesis?

• air

• carbon dioxide

• oxygen

• hydrogen

Multiple Choice

What is the name of the green pigment inside plants?

• Monophyll
• Chlorophyll
• Epiphyll
• Glorophyll

Multiple Choice

Which plant part collects the sun's energy and makes food?

• Leaf

• Stem

• Roots

• Flower

Multiple Choice

What are the products of photosynthesis?

• water and carbon dioxide

• oxygen and glucose

• oxygen and carbon dioxide

• oxygen and water

Poll

Does a plant need oxgen for the process of making food?

• YES

• NO

Open Ended

What is phothosynthesis?

Open Ended

What does a plant need to carry out phothosynthesis?

Open Ended

What are the products of phothosynthesis?

Open Ended

What did you learnt today?

BIG IDEA

WHY DO PLANTS NEED TO RESPOND TO STIMULI?

Open Ended

Why do plants needs to respond to stimuli?

Conclusion

Plants responds to stimuli to get its basic needs in order to make food

Task for today

• Do the exercise from page 86 in science text book.

• Create a poster ( digital or drawing ) to explain the process and importance of phothosynthesis. Due date 22 July 2021.

Answers will be discussed in our next lesson

Thank You

a lesson by Yogeswary Sitaraman