Set up the journal pages below: Glue in yesterdays tropisms on page 65 Date: 2-16-17 Page 66 Title: Plant Reproduction Essential Question: How do systems interact to help a plant reproduce?

Which Tropism is being shown in the pictures….

Worksheet/looking at flower Today’s plan Finish Notes Worksheet/looking at flower

Glue in yesterdays assignment on page 65

Trim the sides of your flower picture and make a small tab at the top Glue on page 66

End of six weeks next Friday!

EQ: How do plants reproduce? Standard BIO.10B Describe the interactions that occur among systems that perform the functions of transport, reproduction, and response in plants. EQ: How do plants reproduce?

What our finished notes will look like today

CHAMPS C- No talking, unless you are called upon or we are coloring H- Raise your hand A- Take notes and color appropriately M- Stay in your seat at all times, raise your hand if you need to get up for any reason P- Take accurate notes

Flowers can be male, female, or both. Flowers with both sets of reproductive structures are called “perfect” flowers. We will use “perfect” flowers for our examples…just remember that not all flowers are created equal! Make a tab at the top of your flower diagram. Use the tab to glue your flower onto your journal page. We will be writing notes UNDER the diagram! You have two minutes to tab and glue the diagram into your journal.

Anticipation Guide: Decide if the following statements are true or false with your partner Some plants are single celled organisms Plants are prokaryotic and animals are eukaryotic Plants are photosynthetic autotrophs Plants have chitin in their cell walls Pollination is a part of plant reproduction There are carnivorous plants FALSE FALSE TRUE FALSE TRUE TRUE

Plant Parts/Systems Reproductive: Flower (with male and female parts) Transport: vascular tissues in stem Nutrient & Support: Leaves + Stem + Roots Response: Hormones + Tropisms All of these parts and systems work together to help a plant maintain homeostasis.

Plant Reproduction

Flowers: reproductive organs of some plants

MALE STRUCTURES ANTHER: produces pollen (sperm); where meiosis occurs FILAMENT: supports the anther STAMEN: anther + filament Find a Blue crayon or pencil. Color the male structures of your flower Blue. Be sure to add a key on your diagram!

FEMALE STRUCTURES: STIGMA: sticky; receives pollen STYLE: tube connecting stigma & ovary OVARY: contains ovules (eggs); where meiosis occurs PISTIL: stigma + style + ovary Find a RED crayon or pencil. Color the female structures of your flower RED. Be sure to add a key on your diagram!

Make sure you have a key!

Reproductive Structures Petals: colourful structures that attract pollinators. Sepals: surround and protect the flower bud. Find any color you want, besides red or blue to color the rest of your flower

So, this is what sexual reproduction in plants looks like...awkward Pollination The pollen grain contains the male gamete

Where is pollen produced??

How does pollen get from the anther to the stigma?

Pollination: transfer of pollen from the anther to the stigma Click to view the animation This is an example of cross-pollination as the pollen travels from one flower to a different flower. This is desirable in plants as it promotes genetic variation.

Pollen can be transferred by: Wind: Dull, scentless flowers with reduced petals Bees/Butterflies: Bright color, nectar, scent. They sip nectar, get pollen on coats, transfer pollen from flower to flower Birds: Nectaries, bright colors, tube-like flowers Moths: White petals, open at night Flies: Rank odor, flesh colored petals

or having parts mature at different times 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 Flowers will prevent self-pollination by either having stigma above stamen or having parts mature at different times

Once pollination occurs a tube grows from the pollen grain down through the style to the ovule stigma style carpel ovary Click to view the animation ovule Note: Petals not shown in order to simplify diagram

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

Seed and Fruit Development After fertilization, the petals and sepals fall off flower Ovary “ripens” into a fruit (hormones) Ovule develops into a seed

Flower to Fruit

Seed Dispersal Mechanisms

Seed Dispersal Mechanisms- Allow plants to avoid competition with parent plant Wind - Flight mechanisms, like parachutes, wings, etc. Ex. Dandelion, maples, birch Animals - Fleshy fruits which animals eat, drop undigested seeds in feces or burrs which stick to animals’ coats Gravity - Heavy nuts fall to ground and roll ex. acorns

Reproduction without flowers

Flower Dissection Lab WS Do NOT Touch the flowers! This is not really a dissection. As you work on this, I will walk around to each table and ask you to identify parts on the real flower. You have 15 min. Skip #8

On the back of your WS Debrief/Summary: G E H Explain how gravitropism and a plant’s reproductive system work together. Hint: Think about seed dispersal mechanisms

Pistil Stigma style Ovary Stamen Anther Filament Petals Pollen 1. What is the female reproductive organ of the flower called? ______________________ 2. What three parts make up the female reproductive organ? ____________________, ____________________ & ____________________ 3. What is the male reproductive organ of the flower? __________________________ 4. What two parts make up the male reproductive organ? ____________________ & ____________________ 5. What floral structures are responsible for attracting pollinators? ___________________ 6. Circle the structure that does not belong with the others: 7. What structure is produced in the anther and contains the male sex cells? ___________ 8. What tissue provides nutrients for the new embryo? __________________________ 9. After seeds mature what happens to the ovary? _______________________________ 10. Describe sexual reproduction in plants. Pistil Stigma style Ovary Stamen Anther Filament Petals Stigma Ovary Anther Style Ovule Pollen Ripens into a fruit Pollen produced in the anther moves to the stigma drops into ovary and ripens into a fruit, seeds get dispersed and grow into new plant