Which of the following statements is true? water is the energy source for plant photosynthesis. chlorophyll is contained in organelles called mitochondria. a by-product of photosynthesis is carbon dioxide. roots have tiny root hairs that maximize the plant's ability to absorb water.

The correct statement is that root hairs maximize the ability of the plant to absorb more water.

The root hairs are tiny, hair-like compositions, which arise on the surface of the plant roots. Their prime function is to enhance the area accessible for water absorption and that of nutrients and other minerals. The root hairs are delicate compositions, which can only thrive for a few days. They do not possess the tendency to convert into roots.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

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.