what is a seed?. cuticle vascular tissue seeds fruit & flowers green algae ancestor...

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What Is A Seed?

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Page 1: What Is A Seed?. Cuticle Vascular Tissue Seeds Fruit & Flowers Green Algae Ancestor BryophytesFernsGymnospermsAngiosperms The Plant Family Tree

What Is A Seed?

Page 2: What Is A Seed?. Cuticle Vascular Tissue Seeds Fruit & Flowers Green Algae Ancestor BryophytesFernsGymnospermsAngiosperms The Plant Family Tree

Cuticle

Vascular Tissue

Seeds

Fruit & Flowers

Green Algae Ancestor

Bryophytes Ferns Gymnosperms

Angiosperms

The Plant “Family Tree”

Page 3: What Is A Seed?. Cuticle Vascular Tissue Seeds Fruit & Flowers Green Algae Ancestor BryophytesFernsGymnospermsAngiosperms The Plant Family Tree

What is a Seed? • The embryo of a plant

• The pollen is the “sperm” or male gamete

• The egg is found within a flower if the plant is an angiosperm; or the female cone if the plant is a gymnosperm

• Fertilization results in an embryo or SEED!

Page 4: What Is A Seed?. Cuticle Vascular Tissue Seeds Fruit & Flowers Green Algae Ancestor BryophytesFernsGymnospermsAngiosperms The Plant Family Tree

Gymnosperms have “Naked Seeds”

The female pine coneis the typical woody cone; itcontains the eggs or ovules

The male pine conecontains pollen

Page 5: What Is A Seed?. Cuticle Vascular Tissue Seeds Fruit & Flowers Green Algae Ancestor BryophytesFernsGymnospermsAngiosperms The Plant Family Tree

Mature ovulate cones and seeds

Page 6: What Is A Seed?. Cuticle Vascular Tissue Seeds Fruit & Flowers Green Algae Ancestor BryophytesFernsGymnospermsAngiosperms The Plant Family Tree

Angiosperms have male and female parts (think of lab last

week!)

Page 7: What Is A Seed?. Cuticle Vascular Tissue Seeds Fruit & Flowers Green Algae Ancestor BryophytesFernsGymnospermsAngiosperms The Plant Family Tree

The seed of an Angiosperm is found within fruit!

Page 8: What Is A Seed?. Cuticle Vascular Tissue Seeds Fruit & Flowers Green Algae Ancestor BryophytesFernsGymnospermsAngiosperms The Plant Family Tree

In Conclusion…

• What is a seed? How is it important to the lifecycle of a plant?

• Let’s investigate…..