Podcast
Questions and Answers
What is the primary function of lignin in xylem vessels?
What is the primary function of lignin in xylem vessels?
- To allow lateral transport of substances
- To facilitate the movement of water
- To enhance the absorption of minerals
- To provide structural support (correct)
Which of the following structures allows food transport in the phloem?
Which of the following structures allows food transport in the phloem?
- Xylem vessel
- Sieve plate (correct)
- Companion cell
- Vacuole
What characteristic of xerophyte plants helps to minimize water loss?
What characteristic of xerophyte plants helps to minimize water loss?
- Large stomata
- Wide leaves
- Swollen roots
- Needle-like leaves (correct)
Which pathway does water primarily follow from soil into the root hair cells?
Which pathway does water primarily follow from soil into the root hair cells?
The process of sucrose moving from a source to a sink in a plant is referred to as what?
The process of sucrose moving from a source to a sink in a plant is referred to as what?
What role do companion cells play in the phloem?
What role do companion cells play in the phloem?
Which type of xylem vessel structure allows for the lateral movement of water?
Which type of xylem vessel structure allows for the lateral movement of water?
What is the main purpose of sunken stomata in xerophytes?
What is the main purpose of sunken stomata in xerophytes?
During the transport of water through the symplast pathway, where does the water move?
During the transport of water through the symplast pathway, where does the water move?
How does water enter the sieve tube from the xylem during translocation?
How does water enter the sieve tube from the xylem during translocation?
Flashcards
Lignin
Lignin
The thickened, rigid cell wall found in xylem vessels, providing structural support and preventing collapse under pressure.
Pits in xylem vessel
Pits in xylem vessel
The porous areas on the walls of xylem vessels that allow water to move laterally between adjacent vessels.
Plasmodesmata
Plasmodesmata
Tiny channels connecting the cytoplasm of adjacent cells, allowing for the passage of water, ions, and small molecules.
Apoplast Pathway
Apoplast Pathway
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Symplast Pathway
Symplast Pathway
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Translocation of food
Translocation of food
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Companion cell
Companion cell
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Sieve tube
Sieve tube
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Xerophyte
Xerophyte
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Sink
Sink
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