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To describe specialised plant cells

Science - Cells, Tissues and Organs

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Activity 1: Label photosynthetic cells that are likely to be found in this plant

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Image credit: pixabay

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Activity 2: Describe what is happening at each stage

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Image credit: pixabay

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Activity 3: Case study

You obtained a microscopic drawing of a plant cell specimen.

  • Identify the type of this cell.
  • Explain its function.
  • Predict when you would expect the cells to appear as they are in the drawing in a 24-hour period.

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Answers

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Activity 1: Label photosynthetic cells that are likely to be found in this plant

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Image credit: pixabay

Stomata and guard cells

Conducting cells (xylem, phloem)

Root hair cells

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Activity 2: Describe what is happening at each stage

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Image credit: pixabay

Carbon dioxide enters the plant through stomata. Oxygen and water leave the plant through stomata. Guard cells control open / closure of stomata

Phloem transports food from leaves to roots and stem.

Xylem transports water from root to leaves.

Root hair cells absorb water from soil

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Activity 3: Case study

  • Stomata and guard cells
  • Stomata are the tiny pores around the stems and leaves, where gas exchange takes place for photosynthesis. Guard cells control open / closure of stomata.
  • They are likely to be found in daytime (or when there is plenty of sunlight) because stomata tend to close at night to preserve water, when there is minimal sunlight, and hence photosynthesis is less likely to occur.

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