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Ice Edge Flower Pockets

A huge ice sheet once covered most of a mountain slope. In a few small bare-rock pockets near the sea, some plants survived while others died.

In the picture

  1. The thick white ice sheet.
  2. The left small green rock pocket with violet flowers.
  3. The right small green rock pocket with violet flowers.
  4. The dark blue sea at the shoreline.
  5. A wilted plant lying at the waterline.

Examples

  • A violet that grows only on one mountain slope.
  • A moss that lives only on one island cliff.

Quiz: Ice Edge Flower Pockets (Age 13)

  1. Why are some plant species found only in one tiny area near a former ice-age glacier?

    • They survived the ice age in small ice-free pockets there.
    • They spread there from warmer places only after the ice age.
    • They were brought there by people once the ice melted.
  2. What does it mean when a plant is endemic to one tiny area today?

    • It naturally lives only in that small area.
    • It can grow in any place with similar rocks.
    • It is extinct in the wild but common in gardens.
  3. What happened to plants that were not in an ice-free refuge during the ice age?

    • Most of them died as the ice sheet covered their habitat.
    • They were all pushed downhill and survived at the shoreline.
    • They survived by becoming dormant under the ice sheet.

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Biology, Age 13