It is important to survival that both unicellular and multicellular organisms are able to maintain homeostasis. Which is not example of how organisms maintain homeostasis?

a. Cells always stay the same.
b. Cell division allows organisms to grow and repair damaged parts.
c. Food is made during photosynthesis, and energy is produced from food during respiration.
d. Materials move into and out of cells through the cell membrane.

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

layer 3 is younger than layer 6.

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.