Question

1. gravitropism is the plants response to gravity. ___ shows positive gravitropism (with gravity), and ___ shows negative gravitropism (against gravity).

○ stems; roots
○ flowers; roots
○ roots; stems
○ stems; leaves

Explanation:

Positive gravitropism means growth in the direction of gravity. Roots grow downward (with gravity), so they show positive gravitropism. Negative gravitropism means growth against the direction of gravity. Stems grow upward (against gravity), so they show negative gravitropism.

Answer:

C. roots; stems