Why did gregor mendel use peas in his experiments?
a.) peas grow very slowly.
b.) pea reproduction cannot be controlled.
c.) peas normally produce very few offspring.
d.) peas have characteristics that have two forms.

The answer would be D. Peas have characteristics that have two forms.

D.) Peas have characteristics that have two forms.

Explanation:

Gregor Mendel was an European monk who was referred to as the Father of Genetics due to his massive contribution to discovering the principles that governs heredity. Mendel performed several experiments to be able to discover these principles. Mendel worked closely with pea plants (Pisium sativum) in his experiments.

He chose to work with pea plants because of the characteristics the plant has, which made it easy to perform his experiments. These characteristics include their easy cultivation, large numbers, monoecious nature making them able to self pollinate etc. However, in addition to all these characteristics, Mendel considered choosing pea plants because they possessed easily observable traits. One fascinating thing is that each trait has two alternative forms e.g Flower colour trait (Purple/White) , Seed shape trait (Round/Wrinkled)

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms