Chapter 24 lecture- Seeds

24–1 Reproduction With Cones and Flowers

Alternation of Generations ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Alternation of Generations

[object Object],[object Object],Life Cycle of Gymnosperms

[object Object],[object Object],Life Cycle of Gymnosperms Pollen grain (N) (male gametophytes)

[object Object],[object Object],[object Object],[object Object],Life Cycle of Gymnosperms

Life Cycle of Gymnosperms Meiosis Fertilization

[object Object],Life Cycle of Gymnosperms Mature sporophyte Pollen cone Pollen grain (N) (male gametophytes)

[object Object],Life Cycle of Gymnosperms Mature sporophyte Seed cone Cone scale Ovules Diploid cell (2N) Ovule Four haploid cells (N) Female gametophyte (N)

[object Object],[object Object],Life Cycle of Gymnosperms Egg cells Discharged sperm nucleus Pollen tube

[object Object],Life Cycle of Gymnosperms Zygote (2N) (new sporophyte)

[object Object],Life Cycle of Gymnosperms Gametophyte tissue Embryo (2N) Seed coat (old sporophyte) Seed

Structure of Flowers ,[object Object]

[object Object],[object Object],Structure of Flowers Sepal

[object Object],[object Object],Structure of Flowers Petal

[object Object],[object Object],Structure of Flowers Filament Anther Stamen

[object Object],Structure of Flowers Anther

[object Object],Structure of Flowers Filament

[object Object],Structure of Flowers Carpel Style Stigma Ovary

[object Object],Structure of Flowers Ovary Ovule

[object Object],Structure of Flowers Style

[object Object],Structure of Flowers Stigma

[object Object],Structure of Flowers Ovary Ovule Carpel Style Stigma Ovary Filament Anther Stamen Sepal Petal

[object Object],[object Object],Structure of Flowers

Life Cycle of Angiosperms ,[object Object]

[object Object],[object Object],[object Object],Life Cycle of Angiosperms

[object Object],Life Cycle of Angiosperms Pollen grains (N) (male gametophyte) Stigma

[object Object],Life Cycle of Angiosperms Haploid cell (N) Ovule Ovary (2N)

[object Object],Life Cycle of Angiosperms Pollen tube Egg cell Sperm Polar nuclei Embryo sac (N) (female gametophyte)

[object Object],[object Object],Life Cycle of Angiosperms Pollen tube Embryo sac (N) (female gametophyte) Egg cell Sperm Polar nuclei

[object Object],Life Cycle of Angiosperms Endosperm (3N) Zygote (2N)

Fertilization in Angiosperms ,[object Object],[object Object],Pollen grains (N) (male gametophyte) Pollen tubes Ovule

[object Object],Fertilization in Angiosperms Pollen grains (N) (male gametophyte) Pollen tubes Ovule

[object Object],[object Object],Zygote (2N)

[object Object],[object Object],Fertilization in Angiosperms Endosperm (3N) Zygote (2N)

[object Object],[object Object],[object Object],Fertilization in Angiosperms

Pollination ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

24-2 Seed Development and Germination

[object Object],Seed and Fruit Development

[object Object],[object Object],Seed and Fruit Development

Seed Dispersal ,[object Object],[object Object],[object Object],[object Object]

Seed Dispersal ,[object Object],[object Object],[object Object]

Seed Dispersal ,[object Object]

Seed Dormancy ,[object Object],[object Object],[object Object]

Seed Dormancy ,[object Object],[object Object],[object Object],[object Object]

Seed Germination ,[object Object],[object Object],[object Object]

Seed Germination ,[object Object],[object Object]

Seed Germination Corn (monocot) Young shoot Germinating seed Primary root Foliage leaves

Seed Germination Cotyledons Bean (dicot) Germinating seed Primary root Young shoot Cotyledons Seed coat Foliage leaves

24-3 Plant Propagation and Agriculture

Vegetative Reproduction ,[object Object]

[object Object],Vegetative Reproduction

Plant Propagation ,[object Object]

Plant Propagation ,[object Object],[object Object],[object Object],[object Object],[object Object]

Plant Propagation ,[object Object],[object Object],[object Object]

Agriculture ,[object Object],[object Object],[object Object]

Agriculture ,[object Object],[object Object],[object Object],[object Object],[object Object]

Agriculture ,[object Object],[object Object]

Chapter 24 lecture- Seeds

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