Answer:
The factors which remained constant are as follows -
- material used as the membrane
- amount of substances used
- number of trials
The factors which have shown variation are as follows -
- molecule size (large starch molecules vs. small glucose molecules)
- whether the molecules diffused through the membrane (tubing)
Explanation
Some factors with in the experiments remained constant from the point of starting of the experiment to its end. While some factors were varied to study its impact on the experiment rate of progression or on the final product formed. Thus , out of the following given factors, the ones that remained constant are -
- material used as the membrane
- amount of substances used
- number of trials
The factors which have shown variation are as follows -
- molecule size (large starch molecules vs. small glucose molecules)
- whether the molecules diffused through the membrane (tubing)
<h2>(A) is the correct option </h2>
Explanation:
- An organism is part of a community is correct,where species interaction occurs between different organisms
- A community is part of population is the incorrect statement because a community includes group of population of two or more different species
- An ecosystem is made up of only organisms is the incorrect statement because ecosystem is the community of both living and non living components of the environment and how they interact with each other
- A biome is the biotic part of an ecosystem is incorrect because biome includes the community of both plants and animals occupying a large habitat
Answer:
Photoperiodism
Explanation:
The term "photoperiodism" was coined to describe a plant's ability to flower in response to changes in the photoperiod: the relative lengths of day and night. Because flowers produce seeds, flowering is crucially important for the plant to complete its life cycle.
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