Sun and water for growth

The idea

Plants require both sunlight and water for their growth.

Three pots

Meena has three pots with the same kind of plant. Pot A has sunlight and water. Pot B has sunlight but no water. Pot C has water but is kept in the dark.

Which plant do you think will grow best?

• The plant in Pot A
• The plant in Pot B
• The plant in Pot C

Let the days pass

Slide to let the days pass. Then tap each pot to read what happened.

Both are needed

Pot A had both sunlight and water and grew best. Pot C had water but no sunlight and grew less. Pot B had sunlight but no water and may have died.

Plants require both sunlight and water for their growth.

• Pot | Sunlight | Water | Result
• A | Yes | Yes | Grows best
• B | Yes | No | May die
• C | No | Yes | Grows less

Notes

Plants require both sunlight and water for their growth.

Check yourself

Which pot grew best?

Pot B had sunlight but no water. What may happen to the plant?

Pot C gets water but no sunlight. How does it compare with Pot A?

What do plants need for their growth?

• Pot C: water, no sunlight. Pot C had no sunlight, so it grew less than Pot A.
• Pot A: sunlight and water — correct. Yes! It had both things a plant needs to grow.
• Pot B: sunlight, no water. Pot B had no water, so it did not grow well. It may have died.
• It grows better than Pot A. Pot A had water as well as sunlight, so it grows better.
• It grows just as well as Pot A. Without water the plant does not grow like the plant in Pot A.
• It may die — correct. Yes! A plant cannot grow without water.
• It grows less than Pot A — correct. Yes! Without sunlight it does not grow as well.
• It grows better, because water is enough. Water alone is not enough. Plants need sunlight too.
• It grows the same as Pot A. Pot A grows better because it has sunlight as well.
• Only water. Pot C had water but no sunlight, and it grew less.
• Both sunlight and water — correct. Yes! Both are needed.
• Only sunlight. Pot B had sunlight but no water, and it may have died.