Life Processes

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Life Processes

• Flowers and Plants

2
Structures of Plants

• Roots anchor the plant and take wat er and
  nutrients from the soil
• Two kinds
• Taproot (big thick root)
• Fibrous Root (many little roots)

3
Structures of plants

• Stems
• provide support for the plant
• Veins
• bundles of tubes that carry food and water

4
Structures of Plants

• Leaves
• Allow movement of water and nutrients through the
  veins.
• Main food making part of the plant
• Use energy from the sun to make food from water
  and carbon dioxide
• Sepal
• Small leaves that hold up the petals and protect
  the bud

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Structures of Plants

• Seed
• An undeveloped plant
• Stores food inside
• Made in flowers

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Seeds

• Seeds move in different ways
• Some plants scatter their own seeds
• Wind
• Water
• Animals
• Humans

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Pollination

• Pollen
• Male sex cell
• Produced by the anther

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Pollination

• Egg/Ovule
• Female sex cell
• Found inside the pistil
• Becomes a seed when fertilized

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Pollination

• Pollination happens when animals, wind or humans
  move pollen from one anther to a pistil.

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Fertilization

• Fertilization
• When pollen goes down the pollen tube and sits
  on the egg, the egg becomes a seed.
• The seed becomes a new plant.

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Seedless Plants

• Seedless plants reproduce with spores.
• Spores grow male and female branches and produce
  sex cells.
• The branches combine and make an egg.
• The egg grows a thin stalk with a spore case on
  top.
• The spore case opens and the spores are released
  to make new plants.
• Moss and Ferns are seedless plants

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Photosynthesis

• Water and minerals are carried to the leaves from
  the roots and stem.
• Carbon Dioxide enters the plant through the
  leaves.
• The leaves use the light from the sun to produce
  food (sugar).
• The energy from the sun is absorbed by the
  chlorophyll in the leaves.
• The food making process releases oxygen into the
  air.
• The food produced goes to all parts of the plant.
  Some food is used and some is stored.

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Dormancy

• Seeds that do not germinate are dormant
  (sleeping).
• They may need more water or warmer weather.
• Dormancy can help a plant survive cold winters or
  periods without rain.
• Some plants have to be dormant for a period of
  time to germinate.

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Were you paying attention?Time for a QUIZ!
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Quiz!

• Q What does the stem do?

A Carries food and water to and from the roots
and leaves.
16
Quiz!

• Q What is it called when a plant stays alive
  but saves energy for warm weather?

A Dormancy
17
Quiz!

• Q What do leaves make food from?

A Water and Carbon Dioxide
18
Quiz!

• Q What is germination?

A When a seed sprouts into a plant.
19
Quiz
Q What is inside the ovary?
A The egg/ovule
20
Quiz

• Q How do seedless plants reproduce?

A Spores
21
Quiz!

• Q What is photosynthesis?

A When leaves use energy from the sun to make
food.
22
Quiz!

• Q What are the products of photosynthesis?

A Sugar and oxygen
23
Quiz!

• Q Another name for male sex cells on a
  flowering plant is?

A Pollen
24
Quiz!

• Q Where is pollen made?

A on the anther
25
Quiz!

• Q What is another name for the female sex cell?

A Egg or Ovule
26
Quiz!

• Q Where are the eggs/ovules found?

A In the ovary
27
Quiz!

• Q How is pollen moved from plant to plant?

A By wind, animals or humans
28
Quiz!

• Q How are seeds scattered?

A Wind, water, animals, humans or by exploding
fruit
29
Quiz!

• Q What is the part of the plant that protects
  the developing flower or bud?

A Sepal
30
Quiz!

• What is it called when pollen is moved from the
  anther to the pistil?

• Pollination

31
Quiz!

• What is it called when pollen goes down the
  pollen tube and sits on the egg, the egg becomes
  a seed?

• Fertilization