problem 1: In relation to the scientific process, describe each of the given.

a) Experiment. ________________________________________________________________

b) Theory. ___________________________________________________________________

problem 2: Scientists investigated the consequence of a certain mineral on the growth of wheat.

Use your knowledge of biology and laboratory processes to answer the given problems.

a) Propose a reason why the seeds employed were all taken from one parent plant.

b) The compost in which the wheat plants were grown was sterilized at the beginning of the investigation.

i) Propose a way in which the scientists might have sterilized the compost.
ii) Illustrate one reason why it was significant to sterilize the compost.

c) Why did the scientists divide the young wheat plants into two equivalent groups?

d) Throughout the investigation the scientists kept the two groups of plants under similar conditions. Why was this?

e) Name the two conditions you think the scientists would have kept constant throughout the investigation.

f) Why did the scientists repeat the investigation some times before publishing their outcomes in a scientific journal?