Plant tissues, organs and systems Quiz
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5 questions, one answer each
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1. Which plant tissue is packed with chloroplasts and mainly carries out photosynthesis?
- A. Epidermal tissue
- B. Palisade mesophyll
- C. Spongy mesophyll
- D. Phloem
2. Why does spongy mesophyll contain large air spaces between its cells?
- A. To store water for the plant
- B. To allow gases to diffuse easily to and from the photosynthesising cells
- C. To reflect light back onto the palisade layer
- D. To transport dissolved sugars around the leaf
3. A student examines a cross-section of a dicotyledonous primary root and finds a central, star-shaped structure of xylem with phloem between its arms. In a primary stem, how does the arrangement of xylem and phloem differ?
- A. They are arranged in vascular bundles around the outer edge of the stem
- B. They are found only in the centre of the stem, identical to the root
- C. Only phloem is present in the stem; xylem is restricted to the root
- D. Xylem and phloem swap positions, with phloem in the centre
4. Which row correctly matches a plant organ to two tissues it contains?
- A. Leaf — palisade mesophyll and epidermal tissue
- B. Root — palisade mesophyll and spongy mesophyll
- C. Stem — spongy mesophyll only
- D. Leaf — xylem only, with no phloem
5. Four structures are listed for a leaf: (1) an organism, (2) a tissue, (3) an organ, (4) a cell. Which sequence places them in order from smallest/simplest to largest/most complex, matching how plant structures are organised?
- A. 1, 2, 3, 4
- B. 4, 2, 3, 1
- C. 2, 4, 1, 3
- D. 3, 2, 4, 1