10 Questions
How many chambers does the heart of a fish have?
Two
Where is the heart located in humans?
Between the lungs, in the middle compartment of the chest
What is the function of heart valves?
Prevent backflow of blood
What is transpiration?
Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems, and flowers.
How is the heart of humans, other mammals, and birds divided?
Into four chambers
What encloses the heart as a protective layer?
Pericardium
How does transpiration affect plant temperature?
Transpiration cools plants.
What happens when water uptake by the roots is less than the water lost to the atmosphere by evaporation?
Plants close small pores called stomata to decrease water loss, which slows down nutrient uptake and decreases CO2 absorption from the atmosphere.
What is the percentage of water taken up by the roots that is used for growth and metabolism?
Only a small amount of water taken up by the roots is used for growth and metabolism.
How is water with dissolved mineral nutrients absorbed into the roots?
Water with any dissolved mineral nutrients is absorbed into the roots by osmosis.
Study Notes
Transpiration
- Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems, and flowers.
- It is a passive process that requires no energy expense by the plant.
- Transpiration cools plants, changes osmotic pressure of cells, and enables mass flow of mineral nutrients.
Regulation of Water Loss
- When water uptake by the roots is less than the water lost to the atmosphere by evaporation, plants close small pores called stomata to decrease water loss.
- This slows down nutrient uptake and decreases CO2 absorption from the atmosphere, limiting metabolic processes, photosynthesis, and growth.
Water and Nutrient Uptake
- Only a small amount of water taken up by the roots is used for growth and metabolism (3-0.5%).
- The remaining 97-99.5% is lost by transpiration and guttation.
- Water with dissolved mineral nutrients is absorbed into the roots by osmosis.
- Water travels through the xylem by way of water molecule adhesion and cohesion.
Test your knowledge of the human heart with this quiz! Explore the anatomy, functions, and importance of this vital organ in the circulatory system. From its size and location to its role in pumping blood and oxygenating the body, challenge yourself with questions about the heart's essential functions.
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