Title: Angiosperms Phylum Anthophyta
1AngiospermsPhylum Anthophyta
2Angiosperms are flowering plants.
- They have true roots, stems, leaves and
flowers... - Angiosperms are more highly evolved that the
algae, mosses, fungi and ferns. Their advanced
structures allow angiosperms to thrive on land.
3Angiosperm
- Angeion vessel or carpal
- Sperma seed
- The carpal which contains the ovule that develop
into seeds after fertilization - The carpal itself develops into the fruit wall.
4Angiosperms are the biggest group in the plant
kingdom.And very diverse!
5Matt of Duckweed, smallest flowering plants
6Angiosperm
- They have roots that hold the plant in place and
take in needed minerals and water. They have
leaves that are the major food makes for the
plant. They have stems that hold the plants up
and move the nutrients and water about the plant.
7- They also have seeds.The seeds are formed when an
egg or ovule is fertilized by pollen in the
ovary. The ovary is within a flower. The flower
contains the male and/or female parts of the
plant. Fruits are frequently produced from these
ripened ovaries.
8Stamens and a Style
Flowering duckweed plant
9Angiosperm benefits
- Angiosperms the primary food source for animals-
grains, beans, nuts, fruits, vegetables, herbs
and spices almost all come from plants with
flowers, as do tea, coffee, chocolate, wine,
beer, tequila, and cola. - They provide lumber for buildings and other
objects, fibers for clothes, are the basis for
many drugs, etc - provides oxygen for us to breathe.
10Compare to other seed plants
- Like other seed plants, angiosperms are
heterosporangiate-producing pollen and ovules in
different organs. - Unlike most seed plants, however, the pollen and
ovule-bearing organs are usually produced
together in a bisporangiate strobilus called a
flower.
11The flower
- In the center of a typical flower are the
carpels, modified leaves which enclose the
ovules. These are often fused to form a single
pistil in the center of the flower. - Surrounding the carpels are several narrow stalks
topped by pollen sacs these pollen-bearing
stalks are called stamens. - Around these reproductive organs is the perianth,
usually consisting of an outer whorl of sepals
and an inner whorl of petals.
12Flower parts
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14Collectively Sepals form the calyx Petals form
the corolla Both form perianth
15Contains microsporangia
16- In monocots and "primitive" dicots, the sepals
and petals may be indistinguishable, in this case
the perianth parts are called tepals.
17Angiosperm
- Monophyletic
- Include two large classes
- Monocotyledones (monocots)
- Grasses, lilies, irises, orchids, cattails, and
palms - Eudicotyledones (eudicots)
- Almost all familiar trees, and shrubs other than
the conifers and many nonwoody plants (herbs).
18Monocots Drupe
19 Flowers and fruit of the banana
20Rice
21Eudicots
- Saguaro cactus
- Thick fleshy stem store water
- Contain chloroplast
- Taken over photosynthetic function
- Round lobed hepatica
- Flower on deciduous woodlands
- No petals
- 6-10 sepals
- Numerous spirally arranged stamens and carpels
- California poppy
22Saquaro catus (Carnegiea gigantea)
23Round lobed hepatica (Anemone americana)
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25Most are free living but some are Parasitic
- Dodder (Cuscuta salina)
- Member of the morning glory family
- Rafflesia arnoldii
- Parasitic on the roots of a member of the grape
family
26Dodder
27Rafflesia arnoldii
28Some Angiosperm are Saprophytic
Indian pipe (Monotropa uniflora)
29Inflorescences
- In many angiosperms, the flowers are arranged in
clusters called inflorescences. - The flowers may be attached along a tall stalk,
arranged in broad open clusters, or pressed
tightly together so that the cluster looks like a
single flower.
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31Shooting Star
32Butter and eggs
33Lupine
34bluebells
35Water hemlock
36Oak flowers
37Position of ovary
38Epigyny
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40Perigyny
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43Pollen grains
Emerging Pollen tube
44Pollen grain of ragweed- hayfever
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