Plants gtg

Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enables it to move from the roots to the leaves of plants?

• Water expands as it freezes

• Water is an excellent solvent

• Water exhibits cohesive behavior

• Water is able to moderate temperatures

From which flower part does structure A in the diagram below develop?

• stamen

• petal

• anther

• ovary

The diagram below represents a change in guard cells that open and close pores in a plant. This change directly helps to...

• increase heterotrophic nutrition

• absorb minerals

• regulate water loss

• reduce seed production

Which phrase, if placed in box X, would correctly complete the flowchart shown below?

• Increased use of starch in root cells

• Increased concentration of glucose in leaf cells

• Decreased ATP in root cells

• Decreased concentration of oxygen in leaf cells

The green aquatic plant represented in the diagram below was exposed to light for several hours. Which gas would most likely be found in the greatest amount in the bubbles?

• oxygen

• ozone

• nitrogen

• carbon dioxide

Base your answer to the following question on the diagram below which represents a cross section of part of a leaf. Which life functions are directly regulated through feedback mechanisms associated with the actions of the structures labeled X?

• excretion and immunity

• digestion and coordination

• circulation and reproduction

• respiration and photosynthesis

The diagram below shows a microscopic view of the lower epidermis of a maple leaf. The diagram below shows a microscopic view of the lower epidermis of a maple leaf.

• a stomate

• xylem tissue

• a lenticel

• phloem tissue

The diagram below represents specialized cells in the surface of the leaf of a green plant.The main function of these cells is to

• change the size of the stomate to regulate water loss

• close the stomate to keep dust and dirt out of the leaf

• directly provide leaf cells with the water involved in photosynthesis

• allow newly formed glucose to be released from the leaf

The exchange of oxygen and carbon dioxide between internal leaf cells and the external environment will occur most efficiently if

• the surfaces of these cells are dry and the stomates are closed

• these cells are dry and the stomates are open

• the surfaces of these cells are moist and the stomates are open

• these cells are moist and the stomates are closed

The diagram below illustrates the movement of materials involved in a process that is vital for the energy needs of organisms. The process illustrated occurs within

• chloroplasts

• mitochondria

• ribosomes

• vacuoles