Examkin

Question

Difficulty: EasyHormonal Coordination in Plants and Animals

Match each regulatory hormone on the left with its corresponding primary physiological response on the right.

  • GlucagonStimulates glycogenolysis in the liver to increase blood glucose concentration
  • Auxin (Indole-3-acetic acid)Promotes cell elongation in shoot tips and maintains apical dominance
  • Antidiuretic hormone (ADH)Increases water reabsorption in kidney collecting ducts
  • CytokininPromotes cell division and delays leaf senescence

Answer

Glucagon pairs with stimulating liver glycogenolysis; Auxin pairs with promoting cell elongation and apical dominance; Antidiuretic hormone pairs with increasing kidney water reabsorption; Cytokinin pairs with promoting plant cell division and delaying leaf senescence.
Glucagon stimulates liver glycogenolysis to raise blood glucose. Auxin promotes cell elongation and apical dominance in growing shoots. Antidiuretic hormone increases water reabsorption in renal collecting ducts. Cytokinin stimulates plant cell division and delays leaf senescence.

Step-by-Step Solution

1
Determine the primary physiological role of Glucagon.
Glucagon promotes liver glycogenolysis to raise low blood glucose levels.
Glucagon is released by pancreatic alpha cells when blood glucose drops below normal.
2
Determine the main function of Auxin in plant growth.
Auxin promotes cell elongation and maintains apical dominance.
Auxins concentrate at shoot apexes to stimulate cell expansion and suppress lateral branches.
3
Determine the action of Antidiuretic hormone (ADH).
ADH increases water reabsorption in renal collecting ducts.
ADH is released by the posterior pituitary to conserve water during osmoregulation.
4
Determine the role of Cytokinin in plants.
Cytokinin stimulates cell division and retards leaf aging.
Cytokinins drive cytokinesis in plant tissues and prevent chlorophyll degradation.

Key Concept

Physiological Functions of Plant and Animal Hormones
Estimated Time:1m 0s
Rate this question

Topics

Hormonal Coordination in Plants and Animals

More questions from this topic