Question

b) What are plant hormones? Give example.
c) Why double circulation off blood is necessary in human beings?​

Answer 1

Answer:

b. Any of various hormones produced by plants that control or regulate germination, growth, metabolism, or other physiological activities. Auxins, cytokinins, gibberellins, and abscisic acid are examples of plant hormones.Plant hormones include auxin, abscisic acid,etc.

c. is necessary for a human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system more efficient and helps in maintaining constant body temperature