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6. Plant nutrition
A section of Biology, 0610
Listing 10 of 508 questions
is a diagram of part of a cross‑section of a leaf. layer A layer B layer C stomata Explain why a leaf is considered to be an organ. Explain how layer B and layer C in are adapted for their functions. A student placed a plant in a very hot room for 12 hours. There was a bright light in the room and the plant was not given any water during the 12‑hour period. shows a series of sketches that the student made of the stomata during the investigation. time / hours stomata D Identify the cell labelled D on . State the main function of the stomata. State the advantage to the plant of the change to the stomata shown in . The student increased the humidity in the room and repeated the investigation. Predict and explain the effect of high humidity on the stomata.
0610_s23_qp_42
THEORY
2023
Paper 4, Variant 2
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shows a drawing of a root hair cell and shows a drawing of a palisade cell. mitochondria mitochondrion chloroplast Explain the reasons for the difference in the numbers of mitochondria and chloroplasts between the root hair cell and the palisade cell, shown in and . mitochondria chloroplasts is a photomicrograph of a cross‑section of part of a xerophyte leaf. B A Explain why the part labelled A in is a tissue. Describe two ways the structure labelled B in is adapted for its function. Describe one way the leaves of xerophytes are adapted to their environment. Describe one way the roots of xerophytes are adapted to their environment.
0610_s24_qp_41
THEORY
2024
Paper 4, Variant 1
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Questions Discovered
508