Problem:
Question 1: Shoot systems exhibit
a. Negative gravitropism
b. Positive gravitropism
c. No response with respect to gravitropism, which only occurs in roots
Question 2: What kind of plastid is used by plants to detect gravity?
a. chloroplasts
b. leucoplasts
c. amyloplasts
d. chromoplasts
e. proteinoplasts
Please select correct answer and also provide explaination.