Fern plants carry out Photosynthesis in the

Step 1: Analyze the question The question asks which part of a fern carries out photosynthesis. Photosynthesis needs chlorophyll, which is found in green, flat, light-exposed parts of a plant.

Step 2: Explain the concepts (the parts of a fern)

• Frond: the leaf of a fern. It is green, broad and divided into leaflets (pinnae), so it is the main photosynthetic organ.
• Rhizome: an underground stem. It stores food and anchors the plant, and it has no chlorophyll.
• Sorus: a cluster of sporangia, usually on the underside of the frond. It produces spores, not food.
• Stolon: a runner, a horizontal stem used for vegetative propagation, as in strawberry.
• Thallus: an undifferentiated plant body with no true roots, stems or leaves, as in algae, liverworts and some fungi. Ferns have true roots, stems and leaves, so they do not have a thallus.

Step 3: Solve

• Photosynthesis needs chlorophyll and light.
• The frond is the green leaf of the fern, exposed to sunlight, with chlorophyll-containing cells.
• The other options are underground, reproductive, a runner, or a structure ferns do not have.

Answer: A. frond

Exam tip: Remember that in a fern the frond is the leaf, and leaves are the main site of photosynthesis. Link the words like this: Rhizome = Root-like stem (underground), Sorus = Spores, Frond = Food-making.