Conditions necessary for photosynthesis practice exercise 4

A science teacher demonstrates an experiment where a plant is kept in direct sunlight but has not been watered for days. It shows signs of wilting and tests negative for starch. What factor limited photosynthesis?

A science teacher demonstrates an experiment where a plant is kept in direct sunlight but has not been watered for days. It shows signs of wilting and tests negative for starch. What factor limited photosynthesis?  (1 mark)

A science teacher demonstrates an experiment where a plant is kept in direct sunlight but has not been watered for days. It shows signs of wilting and tests negative for starch. What factor limited photosynthesis?  (1 mark)

A science teacher demonstrates an experiment where a plant is kept in direct sunlight but has not been watered for days. It shows signs of wilting and tests negative for starch. What factor limited photosynthesis?  (1 mark)

Learners in a class cover one part of a leaf with black paper and leave the other part exposed to light. After testing with iodine, only the exposed part turns blue-black. What does this show?

Learners in a class cover one part of a leaf with black paper and leave the other part exposed to light. After testing with iodine, only the exposed part turns blue-black. What does this show?  (1 mark)

Learners in a class cover one part of a leaf with black paper and leave the other part exposed to light. After testing with iodine, only the exposed part turns blue-black. What does this show?  (1 mark)

Learners in a class cover one part of a leaf with black paper and leave the other part exposed to light. After testing with iodine, only the exposed part turns blue-black. What does this show?  (1 mark)

A farmer closes the greenhouse completely to retain heat. After a few days, the plants show poor growth. What condition is likely missing?

A farmer closes the greenhouse completely to retain heat. After a few days, the plants show poor growth. What condition is likely missing?  (1 mark)

A farmer closes the greenhouse completely to retain heat. After a few days, the plants show poor growth. What condition is likely missing?  (1 mark)

A farmer closes the greenhouse completely to retain heat. After a few days, the plants show poor growth. What condition is likely missing?  (1 mark)

A setup has two identical plants in glass containers. One contains soda lime to absorb CO₂. After a few days, the plant without soda lime grows faster. What conclusion can you draw?

A setup has two identical plants in glass containers as shown below. One contains soda lime to absorb CO₂. After a few days, the plant without soda lime grows faster. What conclusion can you draw?  (1 mark)

A setup has two identical plants in glass containers as shown below. One contains soda lime to absorb CO₂. After a few days, the plant without soda lime grows faster. What conclusion can you draw?  (1 mark)

Two identical plants are planted in soils with different pH levels: one slightly acidic and one strongly alkaline. After 10 days, only the acidic-soil plant remains healthy. What is the most likely explanation?

Two identical plants are planted in soils with different pH levels: one slightly acidic and one strongly alkaline. After 10 days, only the acidic-soil plant remains healthy. What is the most likely explanation?  (1 mark)

Two identical plants are planted in soils with different pH levels: one slightly acidic and one strongly alkaline. After 10 days, only the acidic-soil plant remains healthy. What is the most likely explanation?  (1 mark)

Two identical plants are planted in soils with different pH levels: one slightly acidic and one strongly alkaline. After 10 days, only the acidic-soil plant remains healthy. What is the most likely explanation?  (1 mark)

A student placed three similar plants in different locations: Plant A in a dark closet Plant B near a window with dim light Plant C in direct sunlight After 5 days, only Plant C is healthy and growing well. What conclusion can be made?

A student placed three similar plants in different locations: Plant A in a dark closet, Plant B near a window with dim light, Plant C in direct sunlight. After 5 days, only Plant C is healthy and growing well. What conclusion can be made?  (1 mark)

A student placed three similar plants in different locations: Plant A in a dark closet, Plant B near a window with dim light, Plant C in direct sunlight. After 5 days, only Plant C is healthy and growing well. What conclusion can be made?  (1 mark)

A student placed three similar plants in different locations: Plant A in a dark closet, Plant B near a window with dim light, Plant C in direct sunlight. After 5 days, only Plant C is healthy and growing well. What conclusion can be made?  (1 mark)

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)

Refer to the diagram below showing two plants exposed to light but kept at different temperatures. Plant A is kept at 5°C, and Plant B at 25°C. After one week, Plant B shows higher starch content. What conclusion is best supported by this experiment?

Refer to the diagram below showing two plants exposed to light but kept at different temperatures. Plant A is kept at 5°C, and Plant B at 25°C. After one week, Plant B shows higher starch content. What conclusion is best supported by this experiment?  (1 mark)

Refer to the diagram below showing two plants exposed to light but kept at different temperatures. Plant A is kept at 5°C, and Plant B at 25°C. After one week, Plant B shows higher starch content. What conclusion is best supported by this experiment?  (1 mark)

Refer to the diagram below showing two plants exposed to light but kept at different temperatures. Plant A is kept at 5°C, and Plant B at 25°C. After one week, Plant B shows higher starch content. What conclusion is best supported by this experiment?  (1 mark)

A learner places a green plant in a well-lit transparent box with sealed sides and forgets to water it. The temperature stays ideal, and the plant eventually wilts and fails the starch test. Which condition primarily limited photosynthesis?

A learner places a green plant in a well-lit transparent box with sealed sides and forgets to water it. The temperature stays ideal, and the plant eventually wilts and fails the starch test. Which condition primarily limited photosynthesis?  (1 mark)

A learner places a green plant in a well-lit transparent box with sealed sides and forgets to water it. The temperature stays ideal, and the plant eventually wilts and fails the starch test. Which condition primarily limited photosynthesis?  (1 mark)

A learner places a green plant in a well-lit transparent box with sealed sides and forgets to water it. The temperature stays ideal, and the plant eventually wilts and fails the starch test. Which condition primarily limited 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)