Leaf & Chloroplast Anatomy quiz #2 Flashcards
Leaf & Chloroplast Anatomy quiz #2
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Which plant part connects the leaf blade to the stem?
The petiole connects the leaf blade to the stem. Chlorophyll molecules are in which part of the chloroplast?
Chlorophyll molecules are located in the thylakoids of the chloroplast. Through which layer(s) does light energy travel to reach the palisade mesophyll?
Light energy travels through the epidermis and cuticle to reach the palisade mesophyll. Where in the cells of the leaf do you find air spaces?
Air spaces are found in the spongy mesophyll of the leaf. Which area of a leaf allows gases to flow into and out of the plant?
The stomata allow gases to flow into and out of the plant. What are the pores called within plant leaves that allow for gas exchange with the environment?
The pores are called stomata. Which structures regulate water loss and gas exchange in the leaves of plants?
Stomata regulate water loss and gas exchange in the leaves of plants. Which of the following is a leaf adaptation to prevent water loss? A) Stomata B) Cuticle C) Mesophyll D) Veins
B) Cuticle Through what part of a plant leaf does water exit during transpiration?
Water exits through the stomata during transpiration. What is the main function of veins in a leaf?
The main function of veins in a leaf is to transport water, nutrients, and sugars. Which structures allow the flow of gases in and out of a leaf?
Stomata allow the flow of gases in and out of a leaf. How do simple and compound leaves differ?
Simple leaves have a single undivided blade, while compound leaves have multiple leaflets. What is the waxy covering on a leaf?
The waxy covering on a leaf is called the cuticle. What structures allow water vapor to escape the leaves of a plant?
Stomata allow water vapor to escape the leaves of a plant. Chloroplasts do photosynthesis in which plant structure?
Chloroplasts do photosynthesis in the mesophyll cells of the leaf. What is the mesophyll, and what is its primary function in the leaf?
The mesophyll is the interior tissue of the leaf, composed of mesophyll cells rich in chloroplasts, and its primary function is to perform photosynthesis. What are stomata, and what role do they play in plant physiology?
Stomata are tiny pores on the leaf surface that regulate gas exchange by allowing carbon dioxide to enter and oxygen and water vapor to exit the leaf. What is the function of thylakoids in the chloroplast?
Thylakoids are membrane-bound structures within chloroplasts where the light-dependent reactions of photosynthesis occur. What is the significance of grana in chloroplasts?
Grana are stacks of thylakoids that increase the surface area for light absorption and the light-dependent reactions of photosynthesis. What is the main source of energy for photosynthesis, and how is it captured?
The main source of energy for photosynthesis is electromagnetic wavelengths of light, which are absorbed by chloroplasts. What happens when stomata are closed?
When stomata are closed, gas exchange is restricted, limiting the intake of carbon dioxide and the release of oxygen and water vapor. What are the two membranes of the chloroplast, and what is their purpose?
The chloroplast has an outer membrane that encloses the organelle and an inner membrane that surrounds the internal structures, helping compartmentalize the site of photosynthesis.
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