Plant Structure and Growth

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Plant Structure and Growth

• 5th Grade
• Investigation 2 Vascular Plants
• Video Notes

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Question 1

• What do all plants have in common?

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Question 1 Answer

• All plants are multicelled, have rigid cell
  walls, usually contain chlorophyll, have tissues
  and organs.

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Question 2

• What are the two types of vascular plant tissue
  that make up the vascular bundle?

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Question 2 Answer

• The two types of vascular plant tissue that make
  up the vascular bundle are xylem and phloem.

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Question 3

• Compare the roles of xylem and phloem.

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Question 3 Answer

• Xylem transports water and nutrients from the
  roots up to the other parts of the plant. Phloem
  transports sugar from the leaves to all of the
  other parts of the plant.

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Question 4

• How are the trunk of a tree and a stem of a
  flowering plant the same?

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Question 4 Answer

• The trunk of the tree and a stem of a flowering
  plant are both made up of vascular bundles that
  transport water, nutrients, and sugar to
  different parts of the plant.

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Question 5

• How do the rings in a tree trunk form?

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Question 5 Answer

• As the tree grows, it produces new vascular
  tissue. The oldest tissue is in the center of the
  stem, and the newest living tissue is in the
  outer part of the trunk.

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Question 6

• When you look at a cross section of a tree trunk,
  why are some trunk rings narrow and others wide?
  What does that tell you about the tree?

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Question 6 Answer

• Wide rings of a tree trunk are laid down during
  very wet years when the tree produces lots of
  xylem cells to transport the water from the roots
  to the rest of the plant and then transpire
  through the stomata.
• During a dry year, the tree doesnt grow many
  xylem cells, so the ring is narrow.

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Question 7

• How is the vascular system of plants like the
  circulatory system of humans?

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Question 7 Answer