Plant organs, xylem and phloem

Grade 9 Science Worksheet - Building Confidence

Circle the best answer.

1. 1.

   Ari reads a map of a plant. Which organ is box Y?

   • The root, which makes the sugar and sends it up to the leaves
   • The leaf, which makes the sugar by photosynthesis
   • The stem, which anchors the plant in the soil
   • The flower, which holds the seeds
2. 2.

   Map of a plant (model, not to scale). Kira reads a map of a plant. Which organ is box Z?

   • The root, which holds up the leaves and makes sugar
   • The leaf, which carries water up from the soil
   • The stem, which holds up the leaves and has transport tubes
   • The flower, which carries sugar down to the roots
3. 3.

   Xylem, phloem, stomata, root hairs. Meaning to match: the tissue that carries water and minerals up from the roots. Luz matches a meaning to a term from the word bank. Which term means the tissue that carries water and minerals up from the roots?

   • Root hairs
   • Stomata
   • Phloem
   • Xylem

4. Read this first

   Word bank (model)

   Xylem, phloem, dermal tissue, ground tissue. Meaning to match: the tissue that carries sugar from the leaves to other parts of the plant.

5. 4.

   Milo matches a meaning to a term from the word bank. Which term means the tissue that carries sugar from the leaves to other parts of the plant?

   • Xylem
   • Ground tissue
   • Phloem
   • Dermal tissue

6. Word bank (model)

   Root hairs, guard cells, cuticle, phloem. Meaning to match: thin extensions of root surface cells that add surface area for absorbing water.

7. 5.

   Pia matches a meaning to a term from the word bank. Which term means thin extensions of root surface cells that add surface area for absorbing water?

   • Phloem
   • Root hairs
   • Cuticle
   • Guard cells
8. 6.

   Ren reads a map of a plant. The arrows inside the xylem, from the roots to the leaf, are marked ?. What do they carry?

   • Sugar, which moves down from the leaf to the roots
   • Water and minerals, which move up from the roots
   • Sugar, which moves up from the roots
   • Oxygen, which moves up from the soil
9. 7.

   “model, not to scale” Zee reads a map of a leaf. The arrow from the air into the leaf, through the stomata, is marked ?. What does it carry?

   • Liquid water, which the stomata take in from the air
   • Sugar, which the leaf takes in from the air
   • Minerals, which the stomata take in from the air
   • Carbon dioxide, which the leaf uses to make sugar

10. Use this

    Two model roots, side by side (model, not to scale). Case 1 has a smooth surface with no root hairs. Case 2 is the same length and has many root hairs on its surface.

11. 8.

    Esme compares two model roots. Which case has more surface for taking in water, and why?

    • Case 2, because root hairs add surface area
    • Case 1, because a smooth root touches the soil evenly
    • Both cases, because the length sets the surface area
    • Case 1, because root hairs block the water from entering
12. 9.

    Noah compares two model leaves. Which case lets more water vapor out, and what else crosses?

    • Case 1, because open stomata let water vapor out and carbon dioxide in
    • Case 2, because closed guard cells pull water out of the leaf
    • Case 2, because closed stomata let water vapor out and carbon dioxide in
    • Case 1, because open stomata let water vapor out but let no gas in
13. 10.

    Jun reads a model of a plant. Which case is a sink, a part that receives sugar from the phloem?

    • Case 1, because the leaf stores the sugar it makes
    • Case 1, because the leaf receives sugar from the roots
    • Case 2, because the root tip receives sugar from the leaf
    • Case 2, because the root tip takes sugar from the soil