Photosynthesis Test23

What are the two specialized cells called around the stomata (stoma) that regulate the opening and closing of this pore.

• guard cells
• spongy mesophyll
• palisade mesophyll
• Xylem

What is the small openings (pore) on the underside of a leaf through which oxygen and carbon dioxide can leave and enter the plant called? Also transpiration occurs through these pores on the plant.

• stomata (stoma)
• guard cells
• palisade mesophyll
• spongy mesophyll

What is the name of the cells on a leaf that are a layer of tall, column-shaped mesophyll cells just under the upper epidermis of a leaf where photosynthesis occurs? (# 3 on the picture below)

• phloem
• palisade mesophyll
• spongy mesophyll
• guard cells

Organisms, such as plants, that make their own food are called

• autotrophs.
• heterotrophs.
• thylakoids.
• pigments.

Organisms that cannot make their own food and must obtain energy from the foods they eat are called

• autotrophs.
• heterotrophs.
• producers
• chemosythesis

Which of the following is an autotroph?

• mushroom
• deer
• leopard
• tree

Energy is released from ATP when

• a phosphate group is added.
• adenine bonds to ribose.
• ATP is exposed to sunlight.
• a phosphate group is removed.

Which of the following is NOT a true statement about ATP?

• ATP consists of ribose, adenine, and phosphate.
• ADP forms when ATP releases energy.
• ATP provides energy for the functions of cells.
• Used ATP is discarded by the cell as waste.

A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27°C to measure the rate of photosynthesis. The gas being collected is probably_________________________.

• oxygen.
• carbon dioxide.
• nitrogen
• vaporized water.

Photosynthesis uses sunlight to convert water and carbon dioxide into

• oxygen and pigment
• high-energy sugars, starches and carbon dioxide
• ATP and oxygen.
• oxygen and high-energy sugars