Nutrition in plants practice exercise 1

Your aunt says, “I heard that green plants can feed themselves!” Use the process of photosynthesis to explain how this is true.  (1 mark)

Your aunt says, “I heard that green plants can feed themselves!” Use the process of photosynthesis to explain how this is true.  (1 mark)

Your aunt says, “I heard that green plants can feed themselves!” Use the process of photosynthesis to explain how this is true.  (1 mark)

Look at the image below showing a leaf with a shiny, smooth upper surface. What adaptation does this feature represent for photosynthesis?  (1 mark)

Look at the image below showing a leaf with a shiny, smooth upper surface. What adaptation does this feature represent for photosynthesis?  (1 mark)

Look at the image below showing a leaf with a shiny, smooth upper surface. What adaptation does this feature represent for photosynthesis?  (1 mark)

The government is investing in greening initiatives in arid counties like Turkana and Marsabit. Discuss the scientific rationale behind using photosynthesis to restore degraded ecosystems and its role in achieving environmental sustainability. (2 marks)

The government is investing in greening initiatives in arid counties like Turkana and Marsabit. Discuss the scientific rationale behind using photosynthesis to restore degraded ecosystems and its role in achieving environmental sustainability. (2 marks)

During a nature walk, learners collected leaves and were asked to point at the petiole. How can you help them correctly identify the petiole? (1 mark)

During a nature walk, learners collected leaves and were asked to point at the petiole. How can you help them correctly identify the petiole? (1 mark)

Two learners argue about whether the leaf edge is a part of the leaf. What is this part called and how can you explain its appearance? (2 marks)

The image below shows two similar plants: one grown at normal room temperature and another inside a heated greenhouse. The greenhouse plant shows signs of wilting and poor starch production. Which condition necessary for photosynthesis is affected, and how?  (2 marks)

The image below shows two similar plants: one grown at normal room temperature and another inside a heated greenhouse. The greenhouse plant shows signs of wilting and poor starch production. Which condition necessary for photosynthesis is affected, and how?  (2 marks)

The image below shows two similar plants: one grown at normal room temperature and another inside a heated greenhouse. The greenhouse plant shows signs of wilting and poor starch production. Which condition necessary for photosynthesis is affected, and how?  (2 marks)

Jane planted sukuma wiki in a sunny and a shady part of her garden. She noticed the ones in the shade had wider leaves. What leaf adaptation is helping those in the shade make food?  (1 mark)

Jane planted sukuma wiki in a sunny and a shady part of her garden. She noticed the ones in the shade had wider leaves. What leaf adaptation is helping those in the shade make food?  (1 mark)

Jane planted sukuma wiki in a sunny and a shady part of her garden. She noticed the ones in the shade had wider leaves. What leaf adaptation is helping those in the shade make food?  (1 mark)

Your school garden has spinach plants. What is the name of the green part inside the spinach leaf that traps sunlight to make food? (1 mark)

A student stated that ATP is the final product of photosynthesis. Use your knowledge of the photosynthesis process to support or correct this statement.  (2 marks)

A student stated that ATP is the final product of photosynthesis. Use your knowledge of the photosynthesis process to support or correct this statement.  (2 marks)

A student stated that ATP is the final product of photosynthesis. Use your knowledge of the photosynthesis process to support or correct this statement.  (2 marks)

Describe how the products of the light stage of photosynthesis are used in the dark stage, and explain the importance of this relationship for the overall process.  (2 marks)

Describe how the products of the light stage of photosynthesis are used in the dark stage, and explain the importance of this relationship for the overall process.  (2 marks)

A learner wraps both the upper and lower surfaces of a leaf with aluminium foil, then places the plant in a dark cupboard for 48 hours. After testing the leaf with iodine, no part turns blue-black. What conclusion can the learner make?

A learner wraps both the upper and lower surfaces of a leaf with aluminium foil as shown below. The plant is then placed in a dark cupboard for 48 hours. After testing the leaf with iodine, no part turns blue-black. What conclusion can the learner make? (1 mark)

A learner wraps both the upper and lower surfaces of a leaf with aluminium foil as shown below. The plant is then placed in a dark cupboard for 48 hours. After testing the leaf with iodine, no part turns blue-black. What conclusion can the learner make? (1 mark)

A learner wraps both the upper and lower surfaces of a leaf with aluminium foil as shown below. The plant is then placed in a dark cupboard for 48 hours. After testing the leaf with iodine, no part turns blue-black. What conclusion can the learner make? (1 mark)

In Kisumu, pupils watered two sunflower plants. One had its veins blocked using petroleum jelly. After two days, the plant began to wilt. Which part of the leaf was affected, leading to this condition?

In Kisumu, pupils watered two sunflower plants. One had its veins blocked using petroleum jelly. After two days, the plant began to wilt. Which part of the leaf was affected, leading to this condition? (1 mark)

In Kisumu, pupils watered two sunflower plants. One had its veins blocked using petroleum jelly. After two days, the plant began to wilt. Which part of the leaf was affected, leading to this condition? (1 mark)

A nutritionist in Kisii advises families to include more vegetables in their meals. How is this related to the importance of photosynthesis?

A nutritionist in Kisii advises families to include more vegetables in their meals. How is this related to the importance of photosynthesis? (1 mark)

A nutritionist in Kisii advises families to include more vegetables in their meals. How is this related to the importance of photosynthesis? (1 mark)

A plant growing in soil lacking nitrogen and magnesium appears yellow and stunted despite receiving light and water. What can best explain this condition?

A plant growing in soil lacking nitrogen and magnesium appears yellow and stunted despite receiving light and water. What can best explain this condition?  (1 mark)

A plant growing in soil lacking nitrogen and magnesium appears yellow and stunted despite receiving light and water. What can best explain this condition?  (1 mark)

A plant growing in soil lacking nitrogen and magnesium appears yellow and stunted despite receiving light and water. What can best explain this condition?  (1 mark)

The table below shows the quantity of maize harvested from two different farms after 3 months of growth. Farm NameTree CoverMaize Yield (kg) Farm AHigh380 Farm BLow240 How does the difference in tree cover and photosynthesis explain the yield difference?

The table below shows the quantity of maize harvested from two different farms after 3 months of growth. How does the difference in tree cover and photosynthesis explain the yield difference?  (1 mark) Farm Name Tree Cover Maize Yield (kg) Farm A High 380 Farm B Low 240

The table below shows the quantity of maize harvested from two different farms after 3 months of growth. How does the difference in tree cover and photosynthesis explain the yield difference?  (1 mark) Farm Name Tree Cover Maize Yield (kg) Farm A High 380 Farm B Low 240

The table below shows the quantity of maize harvested from two different farms after 3 months of growth. How does the difference in tree cover and photosynthesis explain the yield difference?  (1 mark) Farm Name Tree Cover Maize Yield (kg) Farm A High 380 Farm B Low 240

Nairobi County Council plants vertical gardens on city buildings. How do these plants contribute to a healthier environment through photosynthesis?

Nairobi County Council plants vertical gardens on city buildings. How do these plants contribute to a healthier environment through photosynthesis?  (1 mark)

Nairobi County Council plants vertical gardens on city buildings. How do these plants contribute to a healthier environment through photosynthesis?  (1 mark)

While observing a leaf diagram, a student points to the underside where tiny openings are visible under magnification. What real-life role do these openings play in helping the plant adapt to its environment during photosynthesis?

While observing a leaf diagram, a student points to the underside where tiny openings are visible under magnification. What real-life role do these openings play in helping the plant adapt to its environment during photosynthesis?  (1 mark)

While observing a leaf diagram, a student points to the underside where tiny openings are visible under magnification. What real-life role do these openings play in helping the plant adapt to its environment during photosynthesis?  (1 mark)

While observing a leaf diagram, a student points to the underside where tiny openings are visible under magnification. What real-life role do these openings play in helping the plant adapt to its environment during photosynthesis?  (1 mark)

A gardener notices that passion fruit vines grown in partial shade have leaves that grow larger and thinner compared to those in direct sunlight. What adaptation is occurring and why?

A gardener notices that passion fruit vines grown in partial shade have leaves that grow larger and thinner compared to those in direct sunlight. What adaptation is occurring and why?  (1 mark)

A gardener notices that passion fruit vines grown in partial shade have leaves that grow larger and thinner compared to those in direct sunlight. What adaptation is occurring and why?  (1 mark)

A gardener notices that passion fruit vines grown in partial shade have leaves that grow larger and thinner compared to those in direct sunlight. What adaptation is occurring and why?  (1 mark)

Review the table below. Which row correctly describes the stage of photosynthesis and enzyme involvement? StageMain ReactantEnzyme Role A. DarkCarbon dioxideFixes it into glucose B. LightOxygenBreaks down ATP C. DarkWaterSplits into hydrogen D. LightCarbon dioxideFixes into glucose

Review the table below. Which row correctly describes the stage of photosynthesis and enzyme involvement?  (1 mark) Stage Main Reactant Enzyme Role A. Dark Carbon dioxide Fixes it into glucose B. Light Oxygen Breaks down ATP C. Dark Water Splits into hydrogen D. Light Carbon dioxide Fixes into glucose

Review the table below. Which row correctly describes the stage of photosynthesis and enzyme involvement?  (1 mark) Stage Main Reactant Enzyme Role A. Dark Carbon dioxide Fixes it into glucose B. Light Oxygen Breaks down ATP C. Dark Water Splits into hydrogen D. Light Carbon dioxide Fixes into glucose

Review the table below. Which row correctly describes the stage of photosynthesis and enzyme involvement?  (1 mark) Stage Main Reactant Enzyme Role Dark Carbon dioxide Fixes it into glucose Light Oxygen Breaks down ATP Dark Water Splits into hydrogen Light Carbon dioxide Fixes into glucose

Kenya faces the challenge of climate change with unpredictable weather patterns. Explain how protecting forests and encouraging afforestation helps in combating climate change through photosynthesis. (2 marks)

Kenya faces the challenge of climate change with unpredictable weather patterns. Explain how protecting forests and encouraging afforestation helps in combating climate change through photosynthesis. (2 marks)

Kenya faces the challenge of climate change with unpredictable weather patterns. Explain how protecting forests and encouraging afforestation helps in combating climate change through photosynthesis. (2 marks)