A student finds an unknown organism while on a field trip to the Myakka River. While examining a sample under a microscope, the presence of which cell organelle would suggest the organism is a plant?

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

the answer would be..

b. sucking