Question

PLEASE HELP

1.Alex poured some pond water into three beakers. She then put waterweed into each

beaker. She put the beakers in different places.


i) In which beaker did the waterweed grow best? Give the correct letter.

________

ii) The waterweed in the box changed from dark green to pale yellow. Why did this happen?

2.In the school pond there were lots of water lilies with large leaves covering the surface. There were not many plants growing below the surface. Suggest a reason
for this.

3.In another experiment, Alex put similar pieces of waterweed into two more beakers of pond water. She added fertiliser to one of them. She kept them both by a window.

i) Alex added fertiliser to beaker E. Suggest the results of this experiment.
ii) What do fertilisers contain to help plants grow? Tick the correct box.

Answer 1

I think 1, 2, and 3 were already answered so I'm going to answered the other ones.

3i. The results of this experiment to development a plant which is NPK. So it results of the fertilizers needing a plant development of nitrogen, phosphorous, and potassium.

3ii. Fertilizers contain "minerals." Minerals are responsible for growth and development of a plant. They also contain nitrogen, phosphorous, and potassium. Nitrogen - Main component of chlorophyll, Enzymes. Phosphorous - Vital component of ATP. Potassium - Important for enzyme activation and transport of water.