transpiration

What is root pressure?

• Pressure exerted by flowers to force water upwards
• Pressure exerted by stems to force water sideways
• Pressure exerted by roots to force water and nutrients upwards
• Pressure exerted by leaves to force water downwards

Cohesion is the force of attraction between _________

• molecules of the same substance
• ions of the same substance
• atoms of the same substance
• molecules of different substances

Which of the following is true about transpiration pull?

• Water is pulled up from the roots to the leaves due to evaporation through stomata.
• Transpiration pull is a result of water being pushed down from the leaves to the roots
• Transpiration pull only occurs at night
• Transpiration pull is caused by root pressure pushing water up the plant

Which of the following is not a correct role of transpiration?

• reduce the temperature of the plant

• Nutrient transport
• loss of excess water

• transport of water up to the leaves

The stomata will open when water goes into the _________

• mesophyll tissue

• subsidiary cells

• guard cells
• xylem

On a hot and humid day the rate of transpiration will

• fluctuate
• stay the same
• increase
• decrease

Which of the following micronutrients is a major component of protein?

• Carbon
• Nitrogen
• Oxygen
• Iron

Deficiency of manganese leads to

• stunted growth, cardiovascular abnormalities, and insulin resistance
• enhanced growth, normal skeletal development, and improved glucose tolerance
• excessive growth, bone density issues, and high blood sugar levels
• yellowing of leaves