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Questions and Answers
What is one of the primary functions of the stem in plants?
What is one of the primary functions of the stem in plants?
Which part of the stem is responsible for gas exchange?
Which part of the stem is responsible for gas exchange?
Which type of asexual reproduction structure is a thickened end of a rhizome that is fleshy and enlarged for food storage?
Which type of asexual reproduction structure is a thickened end of a rhizome that is fleshy and enlarged for food storage?
What distinguishes a node on a stem?
What distinguishes a node on a stem?
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Which type of asexual reproduction structure is characterized by horizontal underground stems that serve as storage organs?
Which type of asexual reproduction structure is characterized by horizontal underground stems that serve as storage organs?
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Study Notes
STEM
- STEM is an acronym for parts of plants related to their functions
- STEM stands for the Support, Transport, Enlargement and Methods of new plant tissue formation.
Functions of Stem
- Support leaves and reproductive structures
- Internal transport of water and nutrients
- Produce new living tissues
- Asexual reproduction
Parts of Stems
- Bud: An underdeveloped shoot containing embryonic meristem. It can be terminal or axillary.
- Node: Point on stem where leaves attach
- Internode: Region of stem between two nodes
- Leaf Scar: Where a leaf was attached to the stem
- Lenticels: Areas for gas exchange
- Terminal Bud: At top of the stem.
- Bundle Scar: Represents the vascular bundles.
- Pith: Central core of the stem
- Scale Scars: marks left by previous bud scales.
Herbaceous Eudicot Stem
- Epidermis: Outermost protective layer
- Cortex: Ground tissue surrounds vascular bundle
- Pith: Innermost ground tissue
- Vascular Bundle: Xylem and phloem tissues for internal transport
Monocot and Dicot Stems
- Dicot stem have vascular bundles arranged in a ring/circular.
- Monocot stem have vascular bundles scattered throughout the stem.
Asexual Reproduction
- Rhizome: Horizontal underground stem that serves as a storage organ.
- Tubers: Thickened end of a rhizome, often fleshy and enlarged for food storage
- Bulb: Modified underground bud. Fleshy storage leaves are attached to a short stem
- Corm: Short, thickened underground stem, specialized for food storage
- Stolons and Runners: Aerial horizontal stems with long internodes that often form buds which develop into separate plants.
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Description
Explore the essential functions and components of plant stems in this quiz. Learn about how stems support leaves, transport nutrients, and contribute to asexual reproduction. Test your knowledge on the various parts of stems, including buds, nodes, and pith.
