Plant Reproduction Asexual- one parent= clone Sexual- two parents= unique 2.

Plant Reproduction

Asexual- one parent= “clone”

Sexual- two parents= “unique”2

Today’s Objectives• Plant reproduction video clip• Asexual reproduction in plants

– Types• Sexual reproduction in plants

– Plant/flower parts involved– Pollination/Fertilization– Pollination BrainPop

• Compare asexual and sexual reproduction– Benefits and drawbacks of each

• Graphic organizer for assessment04/11/23

Asexual & Sexual Reproduction- Plants

NotesNotes

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NotesNotes

Notes

NotesNotes

Questions

Vocabulary words

Formulas

Main Ideas

Possible Test Questions

Summary of the notes and information learned

Differences in Reproduction

• Asexual– Only one “parent”

involved– Offspring is genetically

identical to “parent”– No variation = less

adaptation and evolution– Examples:

• Plantlets• Rhizomes• Tubers• Cuttings

• Sexual– Two “parents” involved– Pollination forms a seed– Offspring is NOT

genetically identical to parents

– Offspring is a combination of genetic information from both parents

– Allows for variation and adaptation

Asexual Reproduction

•Also known as vegetative propagation

•Many plants produce new plants without seeds; without the mixing of two parents’ genetic material

•The offspring are genetically identical to the parent; they are clones!

Asexual ReproductionPlantlets

Asexual ReproductionCuttings

Asexual ReproductionTubers and Rhizomes

Asexual ReproductionRunners

Asexual Reproduction

•See our examples on the window sill.

Sexual Reproduction

•In sexual reproduction a new individual is created from a fusion of gametes (egg cell and sperm cell) from two parents.

•Genetic material is combined and offspring may vary from parents.

•Genetic variation allows for adaptation and evolution of the species over time

Sexual Reproduction

•Flowers are the main portion of a plant involved in reproduction.

•Let’s build some flowers!

•Work w/lab partner but create a flower for each student

•Use template provided; materials are on back table

•Glue into lab book when complete

Sexual Reproduction

Sexual Reproduction

•For sexual reproduction to take place two steps must occur:

• Pollination• Fertilization

Sexual Reproduction

•Pollination is the transfer of pollen from the male part of a flower to the female part

• Depending on species of plant, can be: on the same flower, a different flower on the same plant, or a flower on a different plant of same species

• Which of thesethree types ofpollination wouldallow for geneticvariation?

Sexual Reproduction

•Wind or larger animals often help pollinate flowers by moving pollen around from one place to another, but the major pollinators are insects- bees, flies, wasps, butterflies, etc.

Sexual Reproduction

Sexual Reproduction

•Fertilization is the fusion of the male and female gametes

• The pollen transfers down the pistil and into the ovary where it combines with the ovule

• The ovule becomesthe seed

• The ovary becomesthe fruit

SexualReproduction

•Pollination/FertilizationBrainPop!

Pros and Cons of Each

Pros and Cons of Each

Differences in Reproduction

• Asexual– Only one “parent”

involved– Offspring is genetically

identical to “parent”– No variation = less

adaptation and evolution– Examples:

• Plantlets• Rhizomes• Tubers• Cuttings

• Sexual– Two “parents” involved– Pollination forms a seed– Offspring is NOT

genetically identical to parents

– Offspring is a combination of genetic information from both parents

– Allows for variation and adaptation

Today’s Assignment

• We’re going to use a graphic organizer (T-Chart) to explain, compare and contrast, and illustrate the two types of plant reproduction.

• When complete use the attached rubric to grade yourself and then turn in to bin.

Make it a great day Mustangs!