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Difficulty: EasyExplicit Detail Retrieval

While chemical defenses in plants have received extensive scientific scrutiny, physical barriers such as trichomes—hair-like growths on the epidermis—play an equally critical role in deterring herbivory. Non-glandular trichomes primarily act as mechanical obstacles that hinder insect movement and feeding. In contrast, glandular trichomes secrete secondary metabolites, including essential oils and resins, that are toxic or repellent to potential pests. Notably, recent botanical studies demonstrate that non-glandular trichomes also reduce leaf surface transpiration by creating a microclimate that retains moisture near the stomata, a function absent in their glandular counterparts. Although high trichome density generally correlates with increased herbivore resistance, it can occasionally impede the foraging efficiency of beneficial predatory insects.

According to the passage, which of the following is a function specific to non-glandular trichomes that is not performed by glandular trichomes?

  1. A
    Secreting secondary metabolites that act as chemical repellents against pests
  2. Reducing moisture loss from the leaf surface by creating a microclimate around the stomataAnswer
  3. C
    Completely preventing predatory insects from accessing the leaf surface
  4. D
    Serving as the sole mechanism by which plants achieve resistance to herbivorous insects
  5. E
    Enhancing the overall foraging efficiency of beneficial predatory species

Answer

Non-glandular trichomes reduce leaf surface transpiration by creating a microclimate that retains moisture near the stomata.
The passage explicitly states that non-glandular trichomes reduce transpiration by creating a moisture-retaining microclimate near the stomata, and explicitly clarifies that this is 'a function absent in their glandular counterparts'.

Step-by-Step Solution

1
Locate the explicit detail comparing non-glandular and glandular trichomes in the passage.
Identified sentence: 'Notably, recent botanical studies demonstrate that non-glandular trichomes also reduce leaf surface transpiration by creating a microclimate that retains moisture near the stomata, a function absent in their glandular counterparts.'
The question asks specifically for a function of non-glandular trichomes that glandular trichomes do not perform.
2
Match the explicit fact to the corresponding option using accurate paraphrasing.
Reducing moisture loss (transpiration) via a stomatal microclimate directly matches the statement in the text.
Explicit detail retrieval requires matching the direct statement in the text with a faithful paraphrase.

Key Concept

Explicit Detail Retrieval
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Explicit Detail Retrieval

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