SCIENCE KA 1

Question 1

What substance do plants make using magnesium

Answer 1

Chlorophyll

Question 2

What substance do plants make using nitrates

Answer 2

Protein

Question 3

There are two plants, Plant A has green leaves and plant B

Question 4

1c, what do plants compete for?

Answer 4

Light, water from the soil, space and minerals from the soil

Question 5

1c, what is the difference between intraspecific and interspecific?

Answer 5

Intraspecific means competition between the same species, interspecific is competition between different species

Question 6

3b, part one: Explain how the results show that both light and chlorophyll must be present for photosynthesis. Light:

Answer 6

Number 2 did photosynthesis as it was in the light, number one didn’t.

Question 7

3b, part two: Chlorophyll

Answer 7

Two did photosynthesis, three didn’t. Two has much more chlorophyll three doesn’t have enough.

Question 8

3a, Ethanol is flammable- how can you heat it safely without using a naked flame?

Answer 8

By using the hot water bath method

Question 9

6b, write down two results why they are correct (one wrong)

Answer 9

Possible answer: Mean diameter is close to each of the repeats for each.

Question 10

1b

Answer 10

Plant A might have more chlorophyll

Question 11

5b) Define Ionic bond

Answer 11

The electrostatic force of attraction between the positive metals and negative non-metals