Why do some species employ both mitosis and meiosis, whereas other species use only mitosis?
a) they need meiosis if the cells are producing organs such as ovaries.
b) a single-celled organism only needs mitosis.
c) they need only mitosis to make large numbers of cells such as sperm.
d) they need only meiosis if they produce egg cells.
e) they need both if they are producing animal gametes.

E) They need both if they are producing animal gametes.

Explanation:

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave