Internal parts of a leaf practice exercise 4

A farmer in Kitale noticed that the lower leaves of his maize plants were yellowing while the upper ones remained green. Which part of the leaf is most likely failing, leading to this symptom?

A farmer in Kitale noticed that the lower leaves of his maize plants were yellowing while the upper ones remained green. Which part of the leaf is most likely failing, leading to this symptom?  (1 mark)

A farmer in Kitale noticed that the lower leaves of his maize plants were yellowing while the upper ones remained green. Which part of the leaf is most likely failing, leading to this symptom?  (1 mark)

A pupil in Eldoret was asked to explain how gases like carbon dioxide and oxygen enter and exit the leaf during photosynthesis. Which part of the internal leaf structure is responsible for this exchange?

A pupil in Eldoret was asked to explain how gases like carbon dioxide and oxygen enter and exit the leaf during photosynthesis. Which part of the internal leaf structure is responsible for this exchange? (1 mark)

A pupil in Eldoret was asked to explain how gases like carbon dioxide and oxygen enter and exit the leaf during photosynthesis. Which part of the internal leaf structure is responsible for this exchange? (1 mark)

During a science trip to Mt. Elgon, pupils picked a fresh leaf and observed it under a microscope. They noticed many tightly packed green cells just beneath the upper surface. Which part of the leaf were they observing?

During a science trip to Mt. Elgon, pupils picked a fresh leaf and observed it under a microscope. They noticed many tightly packed green cells just beneath the upper surface. Which part of the leaf were they observing?  (1 mark)

During a science trip to Mt. Elgon, pupils picked a fresh leaf and observed it under a microscope. They noticed many tightly packed green cells just beneath the upper surface. Which part of the leaf were they observing?  (1 mark)

During an experiment in Kakamega Forest, two leaf tissues were isolated. One showed faster gas exchange than the other. Which tissue likely had larger air spaces contributing to the result?

During an experiment in Kakamega Forest, two leaf tissues were isolated. One showed faster gas exchange than the other. Which tissue likely had larger air spaces contributing to the result? (1 mark)

During an experiment in Kakamega Forest, two leaf tissues were isolated. One showed faster gas exchange than the other. Which tissue likely had larger air spaces contributing to the result? (1 mark)

In a classroom experiment, leaves from the lower part of a tree canopy were tested for starch but gave a negative result. What internal structure likely had reduced function?

In a classroom experiment, leaves from the lower part of a tree canopy were tested for starch but gave a negative result. What internal structure likely had reduced function?  (1 mark)

In a classroom experiment, leaves from the lower part of a tree canopy were tested for starch but gave a negative result. What internal structure likely had reduced function?  (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)

In Makueni, a student observed that the leaves of a mango tree folded slightly during the hot afternoon. What internal leaf structure most likely contributed to this reaction, and why?

In Makueni, a student observed that the leaves of a mango tree folded slightly during the hot afternoon. What internal leaf structure most likely contributed to this reaction, and why?  (1 mark)

In Makueni, a student observed that the leaves of a mango tree folded slightly during the hot afternoon. What internal leaf structure most likely contributed to this reaction, and why?  (1 mark)

Refer to the image of guard cells below:Why do guard cells open and close the stomata?

Refer to the image of guard cells below. Why do guard cells open and close the stomata? (1 mark)

Refer to the image of guard cells below. Why do guard cells open and close the stomata? (1 mark)

Look at the diagram below showing the internal structure of a leaf:What is the role of the structure labeled "Palisade mesophyll layer"?

Study the diagram below showing the internal structure of a leaf. What is the role of the structure labeled "Palisade mesophyll layer"? (1 mark)

Study the diagram below showing the internal structure of a leaf. What is the role of the structure labeled "Palisade mesophyll layer"? (1 mark)

Study the diagram below showing the internal structure of a leaf. What is the role of the structure labeled "Palisade mesophyll layer"? (1 mark)

A table below shows parts of the internal structure of a leaf labelled P, Q, R, and S with their functions. LabelFunction PControls the size of the stomatal pore QTransports water and mineral salts to the leaf RTightly packed cells containing many chloroplasts SLoosely packed cells with air spaces for gas exchange Which option correctly names parts P, Q, R, and S?

The table below shows parts of the internal structure of a leaf labelled P, Q, R, and S with their functions. Which option correctly names parts P, Q, R, and S?  (1 mark) Label Function P Controls the size of the stomatal pore Q Transports water and mineral salts to the leaf R Tightly packed cells containing many chloroplasts S Loosely packed cells with air spaces for gas exchange

The table below shows parts of the internal structure of a leaf labelled P, Q, R, and S with their functions. Which option correctly names parts P, Q, R, and S?  (1 mark) Label Function P Controls the size of the stomatal pore Q Transports water and mineral salts to the leaf R Tightly packed cells containing many chloroplasts S Loosely packed cells with air spaces for gas exchange