B.p & transportation in plants worksheet - Free Printable
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Step-by-step solution for: B.p & transportation in plants worksheet
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Show Answer Key & Explanations
Step-by-step solution for: B.p & transportation in plants worksheet
Let's solve the problems step by step and explain each solution.
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1. Which of these can increase your risk of high blood pressure?
- Options:
- a. Obesity
- b. A family history of high blood pressure
- c. Smoking
- d. All of the above
Explanation:
- Obesity: Excess body weight increases the workload on the heart, leading to higher blood pressure.
- Family history: Genetics plays a significant role in determining one's susceptibility to high blood pressure.
- Smoking: Nicotine in tobacco causes blood vessels to narrow, increasing blood pressure.
Answer: d. All of the above
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2. High blood pressure is the main cause of which of these?
- Options:
- a. Cancer
- b. Strokes
- c. Diabetes
- d. Congestive heart failure
Explanation:
- Strokes: High blood pressure damages blood vessels, increasing the risk of strokes due to blockages or ruptures.
- Cancer, Diabetes, and Congestive Heart Failure: While they may be related to high blood pressure, they are not its primary direct consequences.
Answer: b. Strokes
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3. Which of these contribute to high blood pressure?
- Options:
- a. Getting a lot of vitamin C
- b. Drinking a lot of alcohol
- c. Getting a lot of calcium
- d. All of the above
Explanation:
- Vitamin C: Generally beneficial for health; it does not contribute to high blood pressure.
- Alcohol: Excessive alcohol consumption raises blood pressure.
- Calcium: Adequate calcium intake is important for maintaining healthy blood pressure; excessive calcium is not a contributor.
Answer: b. Drinking a lot of alcohol
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4. In which age group of men does the risk for high blood pressure go up?
- Options:
- a. 40 to 49
- b. 50 to 59
- c. 60 to 69
- d. 70 to 79
Explanation:
- The risk of high blood pressure increases with age. By the age of 60–69, the prevalence of hypertension is significantly higher due to factors like reduced elasticity of blood vessels and lifestyle changes.
Answer: c. 60 to 69
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5. Why does reducing how much salt you eat help prevent high blood pressure?
- Options:
- a. It reduces fluid buildup in the body
- b. It allows vessels to relax
- c. It raises levels of HDL ("good") cholesterol
- d. It helps keep your heartbeat steady
Explanation:
- Salt (sodium): Consuming too much salt leads to fluid retention, which increases blood volume and pressure. Reducing salt intake decreases fluid buildup, lowering blood pressure.
Answer: a. It reduces fluid buildup in the body
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6. Root pressure occurs when there is
- Options:
- a. More transpiration and more absorption
- b. Less transpiration and more absorption
- c. Less transpiration and less absorption
- d. More transpiration and less absorption
Explanation:
- Root pressure: Occurs when the rate of water absorption by roots exceeds the rate of transpiration. This creates a positive pressure within the xylem, pushing water upward.
Answer: b. Less transpiration and more absorption
---
7. In which of the following plants there will be no transpiration?
- Options:
- a. Aquatic, Submerged plants
- b. Aquatic plants with floating leaves
- c. Plants living in deserts
- d. Plants growing in hilly regions
Explanation:
- Aquatic, submerged plants: These plants are completely underwater and do not have exposed surfaces for transpiration.
Answer: a. Aquatic, Submerged plants
---
8. Which of the following helps in 'Ascent of sap'?
- Options:
- a. Transpiration
- b. Capillarity
- c. Root pressure
- d. All of these
Explanation:
- Transpiration: Creates a negative pressure (tension) that pulls water upward through the xylem.
- Capillarity: Helps water move upward in narrow tubes due to surface tension.
- Root pressure: Pushes water upward from the roots.
All three mechanisms contribute to the ascent of sap.
Answer: d. All of these
---
9. 'Root Pressure' develops due to
- Options:
- a. Increase in transpiration
- b. Passive absorption
- c. Active absorption
- d. Low osmotic potential in soil
Explanation:
- Active absorption: Roots actively absorb water and minerals using energy (ATP). This active uptake creates root pressure.
Answer: c. Active absorption
---
10. How does water enter the plants?
- Options:
- a. Through the stomata
- b. By osmosis in root hair cells
- c. By active transport in root hair cells
- d. Through the roots
Explanation:
- Osmosis in root hair cells: Water moves into root hair cells by osmosis, driven by the concentration gradient between the soil solution and the cell sap.
Answer: b. By osmosis in root hair cells
---
Final Answers:
1. d. All of the above
2. b. Strokes
3. b. Drinking a lot of alcohol
4. c. 60 to 69
5. a. It reduces fluid buildup in the body
6. b. Less transpiration and more absorption
7. a. Aquatic, Submerged plants
8. d. All of these
9. c. Active absorption
10. b. By osmosis in root hair cells
Boxed Final Answer:
\boxed{d, b, b, c, a, b, a, d, c, b}
---
1. Which of these can increase your risk of high blood pressure?
- Options:
- a. Obesity
- b. A family history of high blood pressure
- c. Smoking
- d. All of the above
Explanation:
- Obesity: Excess body weight increases the workload on the heart, leading to higher blood pressure.
- Family history: Genetics plays a significant role in determining one's susceptibility to high blood pressure.
- Smoking: Nicotine in tobacco causes blood vessels to narrow, increasing blood pressure.
Answer: d. All of the above
---
2. High blood pressure is the main cause of which of these?
- Options:
- a. Cancer
- b. Strokes
- c. Diabetes
- d. Congestive heart failure
Explanation:
- Strokes: High blood pressure damages blood vessels, increasing the risk of strokes due to blockages or ruptures.
- Cancer, Diabetes, and Congestive Heart Failure: While they may be related to high blood pressure, they are not its primary direct consequences.
Answer: b. Strokes
---
3. Which of these contribute to high blood pressure?
- Options:
- a. Getting a lot of vitamin C
- b. Drinking a lot of alcohol
- c. Getting a lot of calcium
- d. All of the above
Explanation:
- Vitamin C: Generally beneficial for health; it does not contribute to high blood pressure.
- Alcohol: Excessive alcohol consumption raises blood pressure.
- Calcium: Adequate calcium intake is important for maintaining healthy blood pressure; excessive calcium is not a contributor.
Answer: b. Drinking a lot of alcohol
---
4. In which age group of men does the risk for high blood pressure go up?
- Options:
- a. 40 to 49
- b. 50 to 59
- c. 60 to 69
- d. 70 to 79
Explanation:
- The risk of high blood pressure increases with age. By the age of 60–69, the prevalence of hypertension is significantly higher due to factors like reduced elasticity of blood vessels and lifestyle changes.
Answer: c. 60 to 69
---
5. Why does reducing how much salt you eat help prevent high blood pressure?
- Options:
- a. It reduces fluid buildup in the body
- b. It allows vessels to relax
- c. It raises levels of HDL ("good") cholesterol
- d. It helps keep your heartbeat steady
Explanation:
- Salt (sodium): Consuming too much salt leads to fluid retention, which increases blood volume and pressure. Reducing salt intake decreases fluid buildup, lowering blood pressure.
Answer: a. It reduces fluid buildup in the body
---
6. Root pressure occurs when there is
- Options:
- a. More transpiration and more absorption
- b. Less transpiration and more absorption
- c. Less transpiration and less absorption
- d. More transpiration and less absorption
Explanation:
- Root pressure: Occurs when the rate of water absorption by roots exceeds the rate of transpiration. This creates a positive pressure within the xylem, pushing water upward.
Answer: b. Less transpiration and more absorption
---
7. In which of the following plants there will be no transpiration?
- Options:
- a. Aquatic, Submerged plants
- b. Aquatic plants with floating leaves
- c. Plants living in deserts
- d. Plants growing in hilly regions
Explanation:
- Aquatic, submerged plants: These plants are completely underwater and do not have exposed surfaces for transpiration.
Answer: a. Aquatic, Submerged plants
---
8. Which of the following helps in 'Ascent of sap'?
- Options:
- a. Transpiration
- b. Capillarity
- c. Root pressure
- d. All of these
Explanation:
- Transpiration: Creates a negative pressure (tension) that pulls water upward through the xylem.
- Capillarity: Helps water move upward in narrow tubes due to surface tension.
- Root pressure: Pushes water upward from the roots.
All three mechanisms contribute to the ascent of sap.
Answer: d. All of these
---
9. 'Root Pressure' develops due to
- Options:
- a. Increase in transpiration
- b. Passive absorption
- c. Active absorption
- d. Low osmotic potential in soil
Explanation:
- Active absorption: Roots actively absorb water and minerals using energy (ATP). This active uptake creates root pressure.
Answer: c. Active absorption
---
10. How does water enter the plants?
- Options:
- a. Through the stomata
- b. By osmosis in root hair cells
- c. By active transport in root hair cells
- d. Through the roots
Explanation:
- Osmosis in root hair cells: Water moves into root hair cells by osmosis, driven by the concentration gradient between the soil solution and the cell sap.
Answer: b. By osmosis in root hair cells
---
Final Answers:
1. d. All of the above
2. b. Strokes
3. b. Drinking a lot of alcohol
4. c. 60 to 69
5. a. It reduces fluid buildup in the body
6. b. Less transpiration and more absorption
7. a. Aquatic, Submerged plants
8. d. All of these
9. c. Active absorption
10. b. By osmosis in root hair cells
Boxed Final Answer:
\boxed{d, b, b, c, a, b, a, d, c, b}
Parent Tip: Review the logic above to help your child master the concept of transport in plants worksheet answers.
