Question

Which type of stimulus is an allergen, such as pollen?


A.
external stimulus


B.
response to a stimulus


C.
inborn stimulus


D.
internal stimulus

Answer 1

A. external stimulus

Answer 2

ok one more How would a houseplant respond to sunlight that comes from one direction?



A.
by curling its stem around its leaves


B.
by closing its leaves at night


C.
by growing roots downward through the soil


D.
by bending its stem toward the sun

Answer 3

hello???

Answer 4

oh, sorry i was somewhere else.

Answer 5

D. would be your answer