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Difficulty: MediumReproductive Systems and Processes in Organisms

Match each specialized reproductive structure in plants or animals with its corresponding physiological function.

  • Sertoli cellsNourish and support developing germ cells during spermatogenesis
  • TapetumProvide nutrient nourishment to developing pollen grains within the anther
  • AcrosomeSecrete hydrolytic enzymes to penetrate the outer membranes of the egg cell
  • SynergidsSecrete chemical signals to guide the entry of the pollen tube into the embryo sac

Answer

Sertoli cells nourish developing spermatids during spermatogenesis; the tapetum nourishes microspores in the anther; the acrosome releases lysosomal enzymes to facilitate egg penetration; and synergids release chemical attractants to direct pollen tube entry.
Each listed structure carries out a distinct supportive or functional role in gametogenesis or fertilization: Sertoli cells nurse spermatids in mammalian testes; the tapetum nourishes microspores within angiosperm anthers; the acrosome provides digestive enzymes needed for sperm penetration during fertilization; and synergid cells produce chemotropic signals directing the pollen tube to the egg cell.

Step-by-Step Solution

1
Identify the cellular origin and function of animal male reproductive structures.
Sertoli cells function as nurse cells in the testes (matching with nourishment of developing germ cells), while the acrosome contains enzymes for egg penetration (matching with secretion of hydrolytic enzymes).
Both structures perform essential support roles in male gametes in animals.
2
Identify the cellular structures and functions involved in plant gametogenesis and fertilization.
The tapetum forms the nutritive inner layer of the microsporangium (matching with pollen nourishment), while synergid cells sit next to the egg cell in the ovule (matching with chemical guidance of the pollen tube).
Both structures are plant-specific adaptations for pollen development and double fertilization.

Key Concept

Structural and functional adaptations of specialized reproductive cells in plants and animals
Estimated Time:1m 30s
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Topics

Reproductive Systems and Processes in Organisms

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