Help Please !!
If a person wanted to stimulate root growth on a plant cutting, he could apply synthetic to the stem.

a. abscisic acid
b. ethylene
c. gibberellin
d. auxin
e. strigolactone

d, auxins, Auxins are naturally occurring plant hormones. Different hormones perform specialized functions in plants, such as triggering ripe fruit to drop or retaining unripe fruit, elongating stems and stimulating root growth.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high