B2.2 Limiting Factors

Question 1

What are the limiting factors of photosynthesis?

Answer 1

Sunlight, carbon dioxide, water, minerals and temperature.

Question 2

What is a limiting factor?

Answer 2

A variable that effects the rate of something happening (eg. Photosynthesis)

Question 3

What is hydroponics?

Answer 3

Growing plants away from soil with the added nutrients and environment needed for them to grow.

Question 4

What materials can replace soils in the process of hydroponics?

Answer 4

Water, rock wool, silicone.

balls.

Question 5

What are the advantages of hydroponics?

Answer 5

The growth can be monitored and the environment can be adjusted according to the state. The plants can grow faster. Can grow them in various places (Urban areas and possibly space)

Question 6

What does photosynthesis produce?

Answer 6

Glucose

Question 7

Why did the shape turn black in the plant experiment?

Answer 7

Because it was the only part of the leaf that photosynthesised. Photosynthesis produces glucose. Iodine checks if starch is present. When you drop iodine on the leaf, the shape turns black because glucose has turned into starch.