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Warm Up # What is the difference between sexual and asexual reproduction in plants? Warm Up # What is the difference between sexual and asexual reproduction in plants?

Warm Up # What is the difference between sexual and asexual reproduction in plants? - PowerPoint Presentation

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Uploaded On 2018-11-01

Warm Up # What is the difference between sexual and asexual reproduction in plants? - PPT Presentation

Lesson 3 Plant Reproduction Essential Questions What is the alternation of generations in plants How do seedless plants reproduce How do seed plants reproduce How can you identify fruits ACTIVITY ID: 708445

reproduction plants plant seed plants reproduction seed plant reproductive pollen female seedless egg reproduce sperm asexual zygote sexual generations

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Presentation Transcript

Slide1

Warm Up #

What is the difference between sexual and asexual reproduction in plants?Slide2

Lesson 3: Plant ReproductionSlide3

Essential Questions

What is the alternation of generations in plants?

How do seedless plants reproduce?

How do seed plants reproduce?Slide4

How can you identify fruits?

ACTIVITY

Examine the pictures

Determine whether each item is a fruit. Slide5

How can you identify fruits?

ACTIVITY

Look at the insides of the foods from the past slides.

What do you notice? Do you agree with your previous thoughts?Slide6

Asexual Reproduction vs. Sexual Reproduction

Asexual reproduction

– part of plant develops into a separate new plant, which is genetically identical to the parent plant

Sexual reproduction

– plant’s sperm combines with a plant’s egg creating a zygote with a genetic combination of its parents

BrainPop

- Asexual ReproductionSlide7

Alternation of Generations

– occurs when the life cycle of an organism alternates between diploid and haploid generationsSlide8

Reproduction in Seedless Plants

First land plants were seedless plants like mosses and ferns

Grow in moist environments where sperm must swim through the water to reach an egg

BrainPop

Seedless PlantsSlide9

How do seed plants reproduce?

Pollen grain

– forms from tissue in a male reproductive structure of a seed plant

Produce sperm cells

Wind, animals, gravity, or water carry pollen to the egg

Pollination

– occurs when pollen grains land on a female reproductive structure of a plant that’s the same species as the pollen grains

Dormancy

– time of no growthCan last days, weeks, or yearsBrainPop- PollinationSlide10

How do seed plants reproduce?

Ovule

– the female reproductive structure of a seed plant where the haploid egg develops

After pollination, fertilization occurs by sperm entering ovule creating a zygote

Embryo

– an immature diploid plant that develops from the zygote

Seed contains the embryo, food supply, and a protective coveringSlide11

Reproduction in Flowerless

Seed Plants

Gymnosperm = naked seed, not surrounded by a fruit

Ex. Conifers like pines,

firs, redwoods, shrubs with

needlelike leavesSlide12

Reproduction in Flowering Seed Plants (Angiosperms)

Reproduction begins in the flower

Male reproductive parts:

Stamen

- male reproductive organ with pollen grains on the anther

Filament supports the anther

Female reproductive parts:

Pistil

– female reproductive organ where pollen lands on the stigmaOvary

– at the base of the style that contains ovulesBrainPop – Plant GrowthSlide13

Life cycle of an Angiosperm

BrainPop

- Seed PlantsSlide14