Answer:
- Ethylene
- Thigmotropism a response to touch
Explanation:
1. Plant hormones or phytohormones are of different types with varying functions. They include; auxins, gibberellins, ethylene, abssicic acid etc. Specifically, ETHYLENE or ETHENE is responsible for hastening the ripening process in fruits of plants.
2. Tropism refers to the response of an organisms to stimuli. There are different types of tropism depending on the stimuli source.
- Phototropism is the response of a plant to light
- Thigmotropism is a response to touch
- Geotropism is the response to gravity.
Answer: Exercise causes the heart to pump blood into the circulation more efficiently as a result of more forceful and efficient myocardial contractions, increased perfusion of tissues and organs with blood, and increased oxygen delivery. Aerobic exercise trains the heart to become more efficient.
Explanation:
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