After one week has passed, I managed to read most of your letter to Joel. I am pleased with those who have put in a lot of effort in crafting the letter. Through this piece of work, we will learn how to identify the problems given in a scenario and brainstorm for the possible reasons to explain. A handful of you display the ability to propose suitable investigation to prove your hypothesis.
To help some of you in improving your understanding for this topic, please refer to the sample letter below.
________________________________________________________________________________
Dear Joel
My friend and I have discussed the problem that you faced
with your plants. We think that your plants died because of the strong wind. As
you mentioned, many of the plants parts were either bent or missing. This
suggests that the strong wind could have broken the plant parts and caused some
of the parts to be blown away.
Damage to the stem will adversely affect the plants growth.
The stem consists of two types of tubes, namely, the water-carrying tubes and
the food-carrying tubes. The water-carrying tubes are responsible in
transporting water and mineral salts from the roots to all parts of the plants.
Water is also needed by the leaves to carry out photosynthesis whereas mineral
salts are needed for the plants to grow healthily.
The food-carrying tubes are responsible in transporting food
made in the leaves to other parts of the plants. Thus, we believe that bending
of the stem could cause a blockage and result water not to be transported. In
addition, food made in the leaves may not be able to be transported to the
roots as well.
When the roots fail to receive food from the leaves, it will
start dying. The death of the roots means that no water can be absorbed and
thus, no water can be transported to all parts of the plants for the plants to
grow and carry out photosynthesis.
Heavy downpour may result too much water to be collected in
the soil. When roots are soaked in water for too long, it may rot and die. This
could be another possible reason why your plants die.
To confirm our theory, we propose the following
investigation to be carried out.
Aim: To find out if the absence of roots will affect the
growth of a plant
Materials: Two similar plants, water
Procedures
1 (1)Label Plant A and Plant B
2 (2) Remove the roots in Plant A
3 (3) Place both plants near the window
4 (4) Add 100ml of water to both plants daily
5 (5) Observe and record down the changes daily
You should observe that the plants with roots will grow
better than the ones without.
Nevertheless, you may also consider investigating if bending
the stem will affect the growth of a plant.
We hope that the above analysis is helpful to you in
understanding the possible reasons behind the plant death.
Regards
Jasper
____________________________________________________________________________
No comments:
Post a Comment