17 Questions
What is the main difference between bulbs and corms?
Bulbs are composed of stem tissue, while corms lack fleshy leaf scales
What is the main function of the taproot system in plants?
Anchoring the plant and absorbing water and minerals
How do adventitious roots differ from the taproot system?
Adventitious roots are found in monocot plants, while taproot systems are found in dicot plants
Which of the following is an example of a plant that has a tuberous stem?
Potato
How can stems be used for vegetative plant propagation?
By using sections of aboveground stems that contain nodes and internodes
What is the primary function of roots in plants?
Anchoring the plant and absorbing water and minerals
What is the primary function of xylem in stem vasculature?
To carry water and minerals up the plant
Which tissue in stem vasculature is responsible for producing annual growth rings in tree trunks?
Vascular cambium
What is the primary difference in vascular arrangement between monocot and dicot plants?
Monocots have scattered vascular bundles, while dicots have a ring of vascular bundles
Why is it important for gardeners to be cautious when weed trimming?
To avoid damaging the vascular cambium
How do herbicides target different types of plants based on their vascular systems?
Herbicides target the different vascular arrangements of monocots and dicots
What distinguishes bulbs from roots?
Bulbs have shortened, compressed stems surrounded by fleshy scales, while roots lack this structure
Which of the following is a feature of corms?
Corms are elongated horizontal stems that often lie along the soil surface
What characterizes potato-tubers and tulip bulbs as stems rather than roots?
The nodes of these structures classify them as stems, unlike roots
How do rhizomes contribute to weed invasiveness?
Rhizomes grow horizontally from plant to plant, making some invasive weeds hard to fight
What is the role of nodes in vegetative plant propagation?
Nodes are where buds are located, allowing for growth and development
How does internodal length reflect a plant's health and productivity?
Longer internodes indicate fertile soil, high light density, and late/wet seasons
Study Notes
Stem Vasculature
- Xylem carries water and minerals up the plant, while phloem carries food down
- Vascular cambium produces new tissue for growth and creates rings in tree trunks
- Different vascular arrangements in monocots and dicots affect herbicidal action
Importance to Gardeners
- Vascular cambium is crucial for grafting and must be protected during gardening activities
- Careless weed trimming can harm the cambium, leading to plant death
- Understanding stem vasculature is essential for plant health and productivity
Stem Types
- Tuberous stems are short, flat, and enlarged, with buds and shoots arising from the top and fibrous roots from the bottom
- Corms lack fleshy leaf scales, distinguishing them from bulbs
Roots
- Roots are the underground part of the plant body, responsible for anchoring, absorbing water and minerals, and storing reserve foods
- Types of roots include taproot or primary root system and adventitious root system
- Taproot system is present in dicots, while adventitious roots are found in monocots
Nodes and Internodes
- Nodes are areas on stems where buds are located, allowing for growth and development
- Pruning near nodes can stimulate bud development and encourage plant growth
- Internodes are areas between nodes, affecting plant growth and structure
- Internodal length is an indicator of a plant's health and productivity, affected by factors like soil fertility, light density, and seasons
Explore how stems and roots play a crucial role in the propagation of plants. Learn about the different types of stems such as bulbs, corms, and tuberous stems, as well as the significance of roots in plant propagation.
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