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What is the difference between species diversity and species evenness ?

Species richness is the number of species found in an area- you simply count the number of different species. Species evenness is how evenly spread the population is across the species in an area- if you hav...
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Answered by Rebecca N. • Biology tutor
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What are chromosomes?

Chromosomes are thread-like structures that are found in the nucleus of the cell. They contain many genes which are sections of DNA that code for a particular protein. These proteins will give an individual ...
EC
Answered by Emma C. • Biology tutor
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Describe how different environmental factors affect the direction of growth of roots and shoots making reference to plant hormones

Shoots grow upwards towards light and away from gravity, while roots grow downwards towards moisture and with gravity. Plants produce an uneven distribution the hormone auxin causing unequal growth rates of ...
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Answered by Paul I. • Biology tutor
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What is Lamarck's theory?

Lamarck's theory suggests that changes that are obtained during a lifetime can be passed on to the offspring of that creature. The changes typically favour survival for the animal. For example, if a giraffe'...
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Answered by Sarah C. • Biology tutor
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Describe how different environmental factors affect the direction of growth of roots and the direction of growth of shoots.

environmental factors such as gravity and light enable plants to grow in the correct direction, in the case of shoots, they exhibit positive phototropism, growing towards a light source, and in the case of r...
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Answered by Monty C. • Biology tutor
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