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Difficulty: EasyHormonal Coordination in Plants and Animals

Match each hormone in Column A with its corresponding main physiological function in Column B.

  • InsulinPromotes glucose uptake by body cells to reduce blood sugar level
  • ThyroxineRegulates the basal metabolic rate and body growth
  • Abscisic acidTriggers stomatal closure during water stress and maintains seed dormancy
  • EthyleneStimulates fruit ripening and leaf abscission

Answer

Insulin corresponds to promoting glucose uptake to reduce blood sugar level; Thyroxine corresponds to regulating basal metabolic rate and body growth; Abscisic acid corresponds to triggering stomatal closure during water stress and maintaining seed dormancy; Ethylene corresponds to stimulating fruit ripening and leaf abscission.
Each hormone is correctly matched to its specific physiological action: Insulin reduces blood sugar levels, Thyroxine regulates metabolic rate, Abscisic acid mediates drought responses by stomatal closure, and Ethylene stimulates fruit ripening.

Step-by-Step Solution

1
Identify the primary functions of the animal endocrine hormones.
Insulin lowers blood glucose by aiding cell absorption, and thyroxine controls the basal metabolic rate.
Pancreatic and thyroid hormones maintain metabolic and chemical balance in animals.
2
Identify the primary roles of the plant growth regulators.
Abscisic acid functions as a stress response hormone that induces stomatal closure, whereas ethylene promotes ripening and abscission.
Plant hormones coordinate developmental processes and environmental stress responses.

Key Concept

Hormonal control and physiological responses in plants and animals
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Topics

Hormonal Coordination in Plants and Animals

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