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Questions and Answers
Which layer of the leaf is primarily responsible for preventing water loss?
Which layer of the leaf is primarily responsible for preventing water loss?
- Palisade mesophyll
- Cuticle (correct)
- Lower epidermis
- Spongy mesophyll
The palisade mesophyll is located closer to the lower epidermis than the upper epidermis.
The palisade mesophyll is located closer to the lower epidermis than the upper epidermis.
False (B)
What is the main function of the stomata in a leaf?
What is the main function of the stomata in a leaf?
gas exchange
The vascular bundle in a leaf contains the _ and pholem, which transport water and nutrients.
The vascular bundle in a leaf contains the _ and pholem, which transport water and nutrients.
Match the leaf structures with their primary functions:
Match the leaf structures with their primary functions:
Which cells control the opening and closing of stomata?
Which cells control the opening and closing of stomata?
The spongy mesophyll has tightly packed cells to maximize light absorption.
The spongy mesophyll has tightly packed cells to maximize light absorption.
What gases are exchanged through the stomata?
What gases are exchanged through the stomata?
The _ is the outermost layer of cells on the top side of a leaf.
The _ is the outermost layer of cells on the top side of a leaf.
Which of the following is NOT a function of the leaf epidermis?
Which of the following is NOT a function of the leaf epidermis?
Xylem transports sugars, while phloem transports water and minerals.
Xylem transports sugars, while phloem transports water and minerals.
Why is the palisade mesophyll located near the upper epidermis?
Why is the palisade mesophyll located near the upper epidermis?
The collective term for the layers in the middle of the leaf (palisade ______ and spongy ______) is _.
The collective term for the layers in the middle of the leaf (palisade ______ and spongy ______) is _.
What is the primary function of the air spaces within the spongy mesophyll?
What is the primary function of the air spaces within the spongy mesophyll?
The cuticle is present on both the upper and lower epidermis of a leaf.
The cuticle is present on both the upper and lower epidermis of a leaf.
What structural feature of guard cells enables them to control the size of the stomatal aperture?
What structural feature of guard cells enables them to control the size of the stomatal aperture?
Carbon dioxide enters plants through the _.
Carbon dioxide enters plants through the _.
Which tissue is responsible for transporting water from the roots to the leaves?
Which tissue is responsible for transporting water from the roots to the leaves?
Palisade mesophyll cells contain fewer chloroplasts compared to spongy mesophyll cells.
Palisade mesophyll cells contain fewer chloroplasts compared to spongy mesophyll cells.
Explain one way the structure of the spongy mesophyll supports the function of gas exchange in plants.
Explain one way the structure of the spongy mesophyll supports the function of gas exchange in plants.
Flashcards
Cuticle
Cuticle
The waxy, protective layer covering the epidermis of a leaf, reducing water loss.
Upper Epidermis
Upper Epidermis
The outermost layer of cells on the top of a leaf, providing protection and allowing light penetration.
Palisade Mesophyll
Palisade Mesophyll
The layer of cells in a leaf where most photosynthesis occurs, characterized by tightly packed, chloroplast-rich cells.
Spongy Mesophyll
Spongy Mesophyll
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Lower Epidermis
Lower Epidermis
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Stoma
Stoma
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Guard Cells
Guard Cells
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Xylem
Xylem
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Phloem
Phloem
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Vascular Bundle
Vascular Bundle
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Study Notes
Leaf Structure
- The outermost layer is the cuticle.
- Below the cuticle is the upper epidermis.
- Palisade mesophyll is located below the upper epidermis.
- Spongy mesophyll is found below the palisade mesophyll.
- The lower epidermis is the bottom layer of the leaf.
- Stoma are openings on the lower epidermis.
- Guard cells surround the stoma.
- Vascular bundles contain xylem and pholem.
- Gases CO2 and O2 diffuse in and out via the stomata.
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