The growth of a plant toward or away from a stimulus such as light, water, touch or gravity is known as?

Prepare for the Abeka Biology Test 3 with our extensive resources. Engage in flashcards and multiple choice questions, each offering hints and thorough explanations to ensure success. Equip yourself with essential knowledge and excel in your exam!

Multiple Choice

The growth of a plant toward or away from a stimulus such as light, water, touch or gravity is known as?

Explanation:
Tropism is directional growth of a plant organ toward or away from a stimulus. This explains how plants orient themselves to favorable conditions. The stimuli listed—light, gravity, touch, and water—trigger tropic responses. When growth is toward light, it’s phototropism; toward gravity, gravitropism; toward touch, thigmotropism; toward water, hydrotropism. A common mechanism involves uneven distribution of auxin, a plant hormone, which causes cells on one side to elongate more and bend the organ toward or away from the stimulus. In this broad sense, the general term for the described growth is tropism.

Tropism is directional growth of a plant organ toward or away from a stimulus. This explains how plants orient themselves to favorable conditions. The stimuli listed—light, gravity, touch, and water—trigger tropic responses. When growth is toward light, it’s phototropism; toward gravity, gravitropism; toward touch, thigmotropism; toward water, hydrotropism. A common mechanism involves uneven distribution of auxin, a plant hormone, which causes cells on one side to elongate more and bend the organ toward or away from the stimulus. In this broad sense, the general term for the described growth is tropism.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy