Plant Structure and Function
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Questions and Answers

What is the primary function of the leaves in a plant?

  • Providing mechanical support to the plant
  • Absorbing water and minerals from the soil
  • Forming a protective outer covering of plant organs
  • Manufacturing sugars from photosynthesis (correct)
  • The epidermal tissue system provides mechanical support to the plant.

    False

    What is the main function of the vascular tissue system?

    Transporting water and nutrients between organs and providing mechanical support

    In a leaf, the phloem is usually found closer to the ______________ surface.

    <p>lower</p> Signup and view all the answers

    Match the following plant organs with their corresponding vascular bundle arrangements:

    <p>Root = Vascular bundles are in the center Stem = Vascular bundles are near the edge, with phloem on the outside and xylem on the inside Leaf = Vascular bundles are distributed evenly throughout</p> Signup and view all the answers

    What is the main function of the ground tissue system?

    <p>Making up the bulk of the plant</p> Signup and view all the answers

    Study Notes

    Plant Structure and Function

    • A plant consists of three main organs: leaves, stems, and roots.
    • Leaves and stems are the sources of the plant.
    • Leaves manufacture sugars from photosynthesis.
    • Roots absorb water and minerals from the soil.

    Tissue Systems in Plants

    • There are three tissue systems in plants: ground tissue, vascular tissue, and epidermal tissue.
    • Ground tissue system: • Consists of packing and supportive tissue. • Makes up the bulk of the plant.
    • Vascular tissue system: • Consists of xylem and phloem tissue arranged as vascular bundles. • Transports water and nutrients between organs. • Provides mechanical support.
    • Epidermal tissue system: • Consists of epidermal tissue. • Forms a protective outer covering of plant organs.

    Distribution of Vascular Tissue in a Plant

    • Vascular bundles: • Xylem and phloem tissues are found in groups called vascular bundles. • The position of these bundles varies in different parts of the plant.
    • In a leaf: • Phloem is usually found closer to the lower surface.
    • In a root: • Xylem vessels are tough and strong. • Vascular bundles are in the center of the root to resist forces that could pull the plant out of the ground.
    • In a stem: • Vascular bundles are arranged near the edge of the stem. • Phloem is on the outside and xylem is on the inside. • This arrangement helps resist compression and bending forces caused by the plant's weight and the wind.

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    Description

    Learn about the three main organs of a plant, including their functions and tissue systems. Understand how leaves, stems, and roots work together to support plant growth.

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