Plant Adaptations · Botany

The multilayered, spongy tissue found in the aerial roots of epiphytic orchids that absorbs atmospheric moisture is called:

  1. Cortex
  2. Velamen
  3. Endodermis
  4. Epidermis
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Correct answer: Velamen

Velamen is a specialized epidermis that acts like a sponge, soaking up dew and rainwater. It also provides mechanical protection and reduces water loss from the root core.

Difficulty: Medium Question 7 of 20

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