Gymnosperm vs Angiosperm

1
Gymnosperm vs Angiosperm

• Flowers, Fruits and Seeds too

2
Seed Plants

• Seed plants are plants that produce seeds in
  order to reproduce.
• Two types of seed plants exist today
• Gymnosperms
• gymno meaning naked
• sperm meaning seed
• Angiosperms
• angio meaning vessel
• sperm meaning seed

3
Gymnosperm Characteristics

• Oldest of seed plants
• Used to be most abundant type of plant on the
  planet, now only four groups exist
• Cycads
• Conifers
• Ginkgoes
• Gnetophytes
• Have needle-like or scale-like leaves

4
Gymnosperm Examples

• Cycads
• Live mainly in tropic regions
• Look like a palm tree but produce a cone
• Cycad Cone

5
Gymnosperm Examples

• Conifers
• Cone bearing plants
• Have needles for leaves
• Most diverse group
• Pines
• Sequoias
• Junipers
• Western White Pine

6
Gymnosperm Examples-Conifers cont.

• Sequoia Juniper

7
Gymnosperm Examples

• Gnetophyte
• Can grow in hot deserts or in tropical rain
  forests
• Can live to 1,000 years
• Welwitschia

8
Gymnosperm Reproduction

• Most gymnosperms produce cones
• Male makes pollen
• Female contains the ovule
• Ovule contains the egg cell which, after
  fertilization, becomes a seed
• Fertilization the joining of a sperm and an egg

9
Gymnosperm Reproduction
10
Angiosperm Characteristics

• ALL angiosperms produce flowers
• ALL angiosperms have seeds that are enclosed in
  fruits (the vessel)

11
Angiosperm Examples

• Apple blossom
• Wheat

12
Angiosperm Examples

• Lily
• Tomato

13

• ANYTHING THAT HAS A FLOWER!

14
Flower Structure

• The flower is the reproductive structure of an
  angiosperm.
• Sepals leaf like structures that protect the
  developing flower
• Petals generally the most colorful part of the
  flower
• Color, size, shape and odor attract pollinators

15
Flower Structure - Petals

• Bright blue and violet bees
• Red, pink, fuchsia or purple Hummingbirds
• Yellow, orange, pink and reds - Butterflies

16
Flower Structure Stamen

• Stamen the MALE part of the flower, has two
  parts
• Anther Makes pollen
• Filament holds up the anther

17
Flower Structure - Pistil

• Pistil the FEMALE part of the flower, has three
  parts
• Stigma has a sticky surface to catch pollen
• Style tube like structure the pollen travels
  down
• Ovary contains the ovules (eggs) and becomes
  the fruit after fertilization
• Ovules (eggs) become the seeds after
  fertilization

18
Flower Structure
19
Fruits

• The fruit is a ripened ovary used to protect the
  developing seeds, enable the seeds to be carried
  to a new location and nourish the seeds when
  deposited on the ground
• If it has a seed, it is a FRUIT (according to
  science)
• Peppers, cucumbers, avocadoes are fruits

20
Fruits
21
(No Transcript)
22
(No Transcript)
23
Seeds

• Seeds ovules that become fertilized
• Carry the genetic information for a new plant

24
Seed Dispersal

• Seeds are dispersed or spread in 4 main ways
• Wind
• Water
• Animal
• Fur
• Feces
• Expulsion

25
Wind dispersal
26
Seed Dispersal
27
Seed dispersal
28
Just Common Courtesy
29
Seed Dispersal
30
Life Cycle of an Angiosperm