Reference no: EM132555899

(a)The following statements relate to meiosis.

i) Genetic variation is caused by random segregation of homologous chromosomes.

ii) Genetic variation is caused by crossing over.

iii) Genetic variation is caused by gene mutation.

Which statements best describe the sources of genetic variation in meiosis? Explain them.

(b) Transpiration occurring at the leaves is mainly responsible for movement of water across the root of R . acris. Explain how transpiration is responsible for the movement of water across the root

(c) Ions are taken up by root hair cells using active transport and facilitated diffusion. Describe two ways in which facilitated diffusion differs from active transport