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Leaf Structure

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What comes out of the stomata? What regulates the opening ... A plant grows toward a ... Thigmotropism. The plants response to TOUCH. This is why vines grow ... – PowerPoint PPT presentation

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Title: Leaf Structure


1
Leaf Structure
  • Where in the leaf does photosynthesis take place?

2
Stomata
  • What comes out of the stomata?
  • What regulates the opening of the stomata?

3
Primary vs. Secondary Growth
  • Primary growth increases the plants length.
  • Secondary growth increases width.

4
Roots
  • Fibrous roots
  • Taproots

5
SEEDS
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9
Plants are living things.They respond to the
environment
  • This is called TROPISMS

10
PHOTOTROPISM
  • A plant grows toward a light source.
  • This response it quick so that new seedlings grow
    toward the sun in order to survive.

11
Thigmotropism
  • The plants response to TOUCH.
  • This is why vines grow around objects.

12
GRAVITROPISM or GEOTROPISM
  • The roots of plants grow with gravity.

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18
Aquatic Plants
  • Water plants have air filled sacs in which oxygen
    can diffuse

19
Desert Plants
  • These plants have extensive root systems,
  • reduced leaves (thorns),
  • and thick stems that
  • can store water.

20
Carnivorous Plants
  • These plants live in areas with poor soil. The
    insects provide the nutrients that the plant is
    not getting from the soil.

21
Plant Hormones
  • Cytokinins stimulate cell division and growth.
  • Cytokinins stimulate dormant seeds to sprout.

22
Ethylene
  • Ethylene is a plant hormone that stimulates fruit
    to ripen.

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