I believe what you are looking for is Chemotaxis.
The mass of a tree is primarily carbon. The carbon comes from carbon dioxide used during photosynthesis. During photosynthesis, plants convert the sun's energy into chemical energy which is captured within the bonds of carbon molecules built from atmospheric carbon dioxide and water.
( hope this helps )
Answer
Cutting stems can stimulate hormones to start lateral leaf growth.
Some tropisms are controlled by hormones.
Cells grow faster in areas where auxin is concentrated.
Hormones help buds form and grow in the winter.
Explanation:
Auxins exert various effects including elongation growth. The basic effect of auxin involves regulation of stem growth. This occurs by stimulation of cell growth in the direction of elongation.Auxin inhibits the growth of axillary buds.
Answer:
Option-E
Explanation:
Meta arteriole is a type of vessel present in the micro-circulatory pathway of the human body, which possesses characteristics of both the arteriole and the capillaries.
The structure of metarteriole usually connects the arteriole to the venules and they possess smooth muscle rings at the entrance of the vessel in the capillary and thus acts as a sphincter. This sphincter controls the flow of blood into the venules and capillaries.
The precapillary sphincters are usually closed but when the tissue needs the oxygen the sphincter opens and supplies the blood.
Thus, Option-E is correct.
