Leaf Cross Section Vocabulary Quiz

Questions and Answers

What is the cuticle?

A waxy, waterproof layer on the surface of leaves (correct)

A structure that contains xylem and phloem

The tissue where photosynthesis occurs

A layer of tightly packed cells

What does the epidermis do?

It is a single layer of tightly packed cells covered by the cuticle.

What is mesophyll?

Tissue between the upper and lower epidermis where almost all photosynthesis occurs.

What is the palisade mesophyll?

A layer of tightly packed cells under the upper epidermis. Signup and view all the answers

What is the function of the bundle sheath?

A single layer of tightly packed cells surrounding each vascular bundle. Signup and view all the answers

Xylem is used for transporting nutrients in plants.

False Signup and view all the answers

Phloem is responsible for transporting sugars and other products of photosynthesis.

True Signup and view all the answers

What is a vascular bundle?

A plant stem structure that contains xylem and phloem tissue. Signup and view all the answers

What describes spongy mesophyll?

Round cells surrounded by abundant air space, located below the palisade mesophyll. Signup and view all the answers

What is the role of guard cells?

Specialized cells in the epidermis that control the opening and closing of stomata. Signup and view all the answers

What is a stoma?

A microscopic opening formed by a pair of guard cells that allows for gas exchange. Signup and view all the answers

Study Notes

Leaf Cross Section Diagram

Cuticle: A waxy, waterproof layer that protects the leaf's surface, creating a barrier over the epidermis to reduce water loss.
Epidermis: Composed of a single layer of tightly packed cells that provide protection and may contain additional structures like stomata.
Mesophyll: The tissue found between the upper and lower epidermis, primarily responsible for photosynthesis due to its high chloroplast content.
Palisade Mesophyll: A layer of elongated, tightly-packed cells located just beneath the upper epidermis, optimizing light absorption for photosynthesis.
Bundle Sheath: A protective layer of tightly-packed cells that surrounds each vascular bundle, providing support and regulating the flow of nutrients.
Xylem: Tissue responsible for transporting water and minerals from the roots to the rest of the plant; critical for photosynthetic processes.
Phloem: Tissue that transports sugars and nutrients produced by photosynthesis from the leaves to other parts of the plant.
Vascular Bundle: Structural unit within the plant stem that includes xylem and phloem tissues; forms the visible veins in leaves, facilitating nutrient transport.
Spongy Mesophyll: Composed of round cells with ample air spaces, located below the palisade mesophyll; aids in gas exchange and supports photosynthesis.
Guard Cell: Specialized cells in the epidermis that regulate the opening and closing of stomata, controlling water loss and gas exchange.
Stoma: Microscopic openings formed by a pair of guard cells in the epidermis, allowing for the exchange of gases (CO2, O2) between the leaf and the atmosphere.

Description

Test your knowledge of important terms related to the leaf cross section. This quiz covers definitions of key components such as cuticle, epidermis, and mesophyll. Enhance your understanding of plant anatomy and photosynthesis processes.