Leaves and their Functions

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Questions and Answers

Which part of the leaf is responsible for most of the photosynthesis?

  • Upper epidermis
  • Lower epidermis
  • Mesophyll (correct)
  • Stomata

In leaf morphology, what structures are present in most mature leaves?

  • Stipules at the tip of the leaf blade
  • A network of veins, flattened blade, and stalk (correct)
  • Sessile leaves with no stalk or petiole
  • Axillary buds at the tip of the leaf

What are the main functions of leaves in a plant?

  • Storage of nutrients
  • Capture light energy through photosynthesis (correct)
  • Production of hormones
  • Absorption of water

What is the term for the arrangement of leaves on a stem?

<p>Phyllotaxy (C)</p> Signup and view all the answers

Which part of the leaf is responsible for regulating gas exchange?

<p>Stomata (C)</p> Signup and view all the answers

What is the main function of bulliform cells in monocot leaves?

<p>Cause leaf folding to reduce transpiration (D)</p> Signup and view all the answers

How do xerophytic leaves adapt to reduce water loss?

<p>Dense, hairy coverings (A)</p> Signup and view all the answers

What is the main feature that distinguishes shade leaves from sun leaves?

<p>Fewer well-defined mesophyll layers and chloroplasts (B)</p> Signup and view all the answers

Which plant type has leaves with less differentiation in mesophyll layers and large air spaces?

<p>Hydrophytes (B)</p> Signup and view all the answers

In Fall, what causes the change in leaf color as chlorophyll breaks down?

<p>Presence of anthocyanins and betacyanins (A)</p> Signup and view all the answers

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