Leaf Structure and Function Concepts

Which of the following is a term used to describe a leaf with a single, undivided blade?

• Compound leaf

• Simple leaf

• Palmate leaf

• Pinnate leaf

What is the function of the guard cell in a leaf?

• To provide structural support

• To control the opening and closing of stomata

• To transport water

• To store food

Which of the following best describes the process of osmosis in plant leaves?

• Movement of water from high to low concentration through a membrane

• Movement of gases through stomata

• Loss of water vapor to the atmosphere

• Absorption of sunlight for photosynthesis

What is the midrib of a leaf?

• A small vein at the edge of the leaf

• A main vein running down the middle of the leaf blade

• The stalk that connects the leaf to the stem

• A type of compound leaf

Which type of leaf venation is typically found in monocot plants?

• Branched veins

• Palmate veins

• Parallel veins

• Reticulate veins

Explain how you would distinguish between a monocot and a dicot leaf if you only had the leaf to examine.

• By checking if the leaf is green or yellow

• By looking for the presence of a petiole and the pattern of veins

• By measuring the length of the stem

• By counting the number of flowers on the plant

Why is it important to know the terminology regarding leaf shapes when identifying plants?

• It helps in identifying and describing plants accurately

• It helps in watering plants

• It determines the color of the leaf

• It is only useful for drawing leaves

What is a sinus in the context of leaf margins?

• The tip of the leaf.

• The space between two lobes.

• The base of the leaf.

• The edge of the leaf.

Which of the following best describes an awl-shaped leaf?

• A leaf that overlaps another like a fish scale or a roof shingle.

• A leaf that is broad and flat.

• A leaf that tapers to a slender stiff point.

• A leaf that is round and thick.

What is a stoma?

• A type of pigment in plant cells

• A tiny pore in the epidermis that regulates the exchange of gases

• A layer of cells responsible for photosynthesis

• A structure that transports water in plants