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Biology
GCSE

What is the difference between meiosis and mitosis?

Meiosis - cell division to form gametes (sex cells), each gamete contains half the number of chromosomes than in a normal cell. Mitosis - division of body cells during normal growth, each cell contains a ...

EP
Answered by Elizabeth P. Biology tutor
4370 Views

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 ...

RN
Answered by Rebecca N. Biology tutor
21301 Views

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 individu...

EC
Answered by Emma C. Biology tutor
6323 Views

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 ...

PI
Answered by Paul I. Biology tutor
5305 Views

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 giraf...

SC
Answered by Sarah C. Biology tutor
3617 Views

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