BELLWORK: Write the correct tropism to each scenario. 1. You place a lily plant in your windowsill to observe the movement of the flower. 2. The roots.

BELLWORK:Write the correct tropism to each scenario.

1. You place a lily plant in your windowsill to observe the movement of the flower. 2. The roots of a rosebush absorb the moisture provided by the rain.3. A vine uses the nearby fence to latch onto.4. As a seed begins to germinate, the roots grow downward and the stem grow upward.

HAPPY THURSDAY

Gravitropism

Phototropism

ThigmotropismHydrotropism

Plant Notecards4th and 5th Periods

Due Friday (3/9/15)

1. Anther2. Cellular

Respiration3. Filament4. Flower5. Germination6. Glucose7. Gravitropism8. Hydrotropism9. Leaf10. Ovary11. Petal

12. Phloem13. Photosynthesis14. Phototropism15. Pistil16. Pollen17. Pollination18. Roots19. Sepal20. Stamen21. Stem22. Stigma23. Stoma

24. Style25. Thigmotropism26. Transpiration27. Xylem

-Extra Credit**Due tomorrow**

Only here till 3:30pm

Anticipation Guide:Decide if the following statements are

true or false with your partner1. Some plants are single celled organisms2. Plants are prokaryotic and animals are

eukaryotic3. Plants are photosynthetic autotrophs4. Plants have chitin in their cell walls5. Pollination is a part of plant reproduction6. There are carnivorous plants

PlantsWhat makes a plant a

plant?

Plants are eukaryoticPlants have cell walls made of cellulosePlants make their own energy through photosynthesis

Plants are multicellular

What plants need to survive…

1. Sunlight

2. Water

3. CO2 & Oxygen

On today’s notes, you will divide them into 6 sections.

You will write the bold, red for each section only.

Essential Question: How do the different parts of the plant work together

to reproduce?

Standard: Describe the interactions that occur among systems that perform the functions of

transport, reproduction, and response in plants. (B10B)

Plant Parts/Systems• Reproductive System =

Flower (with male and female parts)

• Transport System = tissues in stem

• Nutrient System = Leaf + Root

• Structural Support System = Stem + Roots

All of these parts and systems work together to help a plant maintain homeostasis.

Plant Reproduction Outline

Flower structure

Pollination

Fruit

Seed dispersal

Germination

Reproduction withoutFlowers

1

2

3

4

5

6

1. Flower Structure• Flowers are the reproductive organs of plants• Have male and female parts

Male Reproductive StructureThe stamen

consists of two parts: Anther and Filament

Anther = produces pollen

A = AntherF = Filament

Female Reproductive StructureThe (sticky) stigma

receives the pollen from the anther

The pollen grows a tube down through the style

Meiosis occurs in the ovary to produce ovules

J = StigmaK = StyleL = OvaryO = Ovule

Pollination

The pollen grain contains the male gamete

So, this is what sexual

reproduction in plants looks

like...awkward

How does the pollen get to the stigma?

2. Pollination: the transfer of pollen from the anther to the stigma

Cross-pollination: pollen travels from one flower to another. **This is desirable in plants as it promotes genetic variation.

Click to view the animation

What OR who is responsible for getting pollen to the stigma?

Wind: Dull, scentless flowers with reduced petals

Bees/Butterfly: Bright color, nectar, scent. They sip nectar, get pollen on coats, transfer pollen from flower to flower

Bird: Nectaries, brightcolors, tube-like flowers

Moth: White petals, open at night

Fly: Rank odor, fleshcolored petals

Forms of Pollination:

Self-pollination occurs when pollen falls from the anther onto the stigma of the same flower

Self-pollination is not desirable as it reduces genetic variation

3. Fruit

Once pollination occurs a tube grows from the pollen grain down through the style to the ovule

stigma

style

ovary

ovule

carpel

Note: Petals not shown in order to simplify diagram

Click to view the animation

Fertilization: occurs when the pollen (male gamete) fuses with the ovule (the female gamete) **SEXUAL REPRODUCTION**

Click to view the animation

Then we get…Fruit!

Ovary “ripens” into a fruit (using hormones)

Ovule develops into a seed

Flower to Fruit

4. Seed Dispersal

Seed Dispersal Mechanisms =

1. Wind- Flight mechanisms, like parachutes, wings, etc. Ex. Dandelion, maples, birch

2. Animal- Fleshy fruits which animals eat, drop undigested seeds in feces or burrs which stick to animals’ coats

3. Gravity- Heavy nuts fall to ground and rollex. acorns

5. Germination

Germination = when the plant begins to grow out of its seed coat

Seed coat = protects embryo and keeps seed from drying

6. Reproduction without flowers

• Mosses, ferns, and related plants have swimming sperm. The leafy tips of mosses produce male and female sex cells. Male sex cells swim through water on the surface of the plant to reach and fertilize female cells. Fertilization produces a spore capsule, that scatters spores into the air.

What kind of environmental conditions would be required for reproduction in these plants?

What kinds of limits does external reproduction impose on these plants?

Debrief:

How do the response system in plants (tropisms) and the reproductive systems in plants interact?

Hint…Think about the following pairs below for interactions!• Hydrotropism & seed germination• Phototropism & nutrients needed for the flower/fruit• Gravitropism & seed germination or plant growth• Thigmotropism & pollination mechanisms

WORK

TOGETHER

Plant Quiz

1. Where is pollen made?

stigma

sepal

anther

ovary

Plant Quiz

2. Where is the ovule found in a flower?

petals

style

nectary

ovary

Plant Quiz

3. Pollination is the transfer from….?

the stigma to anther

style to stamen

anther to stigma

ovule to filament

Plant Quiz

4. Cross-pollination…

Increases variation

Decreases variation

Is only performed by wind

Is only performed by insects

Plant Quiz

6. Flowers are adapted for animal-pollination by…

Having feathery stigmas

Having a nectary

Having bright petals and a scent

Having sticky stigmas

Plant Quiz

7. Which mechanism for dispersal is used by the seed shown in the picture

mechanical

wind

animal

water

Plant Quiz

8. Which mechanism for dispersal is used by the seed shown in the picture

mechanical

animal

wind

water