Flower Dissection Summary PowerPoint Presentation

Flower Dissection Summary PowerPoint Presentation

2018-11-06 4K 4 0 0

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Here is a picture of an Alstromeria flower before it blooms. Notice how the bud is protected by the sepals on the outside. The sepals on this flower are mostly green with a little hint of purple. The green will fade as the flower gets ready to bloom and open up.. ID: 718727

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Slide1

Flower Dissection Summary

Slide2

Here is a picture of an Alstromeria flower before it blooms. Notice how the bud is protected by the sepals on the outside. The sepals on this flower are mostly green with a little hint of purple. The green will fade as the flower gets ready to bloom and open up.

Slide3

Steps 1-3

Sepals

-protect the bud photosynthesizes for developing bud

Petals

-attract pollinators

Slide4

Step 4-6

Stamen

Pistil

Stamen

Pistil

Slide5

Step 7-9

Stamen

-male part of the flower, is made up of:

Anther

-produces pollen

Filament

-holds anther up

Filament

Anther

Slide6

Step 10-11

Pistil

-female part of the flower, is made up of:

Stigma

-sticky, pollen gets stuck to it

Style

-holds stigma up, wherepollen tube is producedOvary-contains the eggs

Stigma

Style

Ovary

Stigma

Slide7

Step 12

Pollen magnified 100x

Slide8

Step 13-14

The ovary is thick to cut through to protect the eggs. There are so many eggs so the plant can produce many seeds.

Eggs

Slide9

This is a picture of an Alstromeria flower that has been allowed to bloom for a week. Notice the three “fingers” of the stigma. They have opened up and they appear to have a drop of water at the tip. It is very sticky so it can trap pollen.

Slide10

This is the same Alstromeria flower several weeks later. Notice all the petals, sepals, stamen and pistil have fallen off. The ovary has gotten larger and the fertilized eggs inside are starting to turn into seeds.

Slide11

Review Questions

Why do you think certain parts of the flower are shaped the way they are?

Slide12

Answer-

The parts of the flower are shaped the way they are so they can do a specific job

.

Form allows for function

Slide13

2. How does it benefit the plant to have both male and female parts located in the flower?

Slide14

Answer-

By having both male and female parts in one flower, the flower

can perform self pollination and does not rely on a pollinator.

Slide15

3

.

Name

at least 2 ways that a plant can be pollinated. (Think about how the pollen is going to get onto the stigma-who or what will put it there?)

Slide16

Answer

-

Pollination can either be self or cross. If cross pollination the pollen can be carried by pollinators such as insects and birds and wind.


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