Related questions with answers

What are the physical factors associated with altitude that could affect plant phenotype?

(a) What is a cline? _____ (b) On a windswept portion of a coast, two different species of plant (species A and species B) were found growing together. Both had a low growing (prostrate) phenotype. One of each plant type was transferred to a greenhouse where "ideal" conditions were provided to allow maximum growth. In this controlled environment, species B continued to grow in its original prostrate form, but species A changed its growing pattern and became erect in form. Identify the cause of the prostrate phenotype in each of the coastal grown plant species and explain your answer: Plant species A: _____ Plant species B: _____ (c) Which of these species (A or B) would be most likely to exhibit clinal variation? _____

In recent years, factories have become cleaner, and less soot is released into the environment. What impact do you think this has had on the distribution of moth color in the population?

Question

(a) What is a cline? _ (b) What physical factors associated with altitude could affect plant phenotype? _

Solution

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A) A cline is a change in the characteristic of inhabitants living in nearby locations from one end to another. A cline can be measured by the distinguishing characteristic such as blood type or genes or it can also be measured by physical characteristics such as skin color, height or size of the body.

B) A physical characteristic that altitude can modify is decreasing the size of the plant as the altitude goes higher. It is often referred to as the tree line wherein certain environmental measures are not met such as the lack of moisture and pressure which are both essential to a growing tree.