Download Basic Plant Structure

HAPPY THURSDAY
BELLWORK:
Write the correct tropism to each scenario.
1. You place a lily plant in your windowsill to observe the
movement of the flower. Phototropism
2. The roots of a rosebush absorb the moisture provided by
the rain.
Hydrotropism
3. A vine uses the nearby fence to latch onto. Thigmotropism
4. As a seed begins to germinate, the roots grow downward
Gravitropism
and the stem grow upward.
Plant Notecards
4th and 5th Periods
Due Friday (3/9/15)
1. Anther
2. Cellular
Respiration
3. Filament
4. Flower
5. Germination
6. Glucose
7. Gravitropism
8. Hydrotropism
9. Leaf
10. Ovary
11. Petal
12. Phloem
13. Photosynthesis
14. Phototropism
15. Pistil
16. Pollen
17. Pollination
18. Roots
19. Sepal
20. Stamen
21. Stem
22. Stigma
23. Stoma
24. Style
25. Thigmotropism
26. Transpiration
27. Xylem
-Extra Credit
**Due tomorrow**
Only here till 3:30pm
Anticipation Guide:
Decide if the following statements are
true or false with your partner
1. Some plants are single celled organisms
2. Plants are prokaryotic and animals are
eukaryotic
3. Plants are photosynthetic autotrophs
4. Plants have chitin in their cell walls
5. Pollination is a part of plant reproduction
6. There are carnivorous plants
Plants
What makes a plant a plant?
Plants are eukaryotic
Plants have cell walls made of cellulose
Plants 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
4
1
Seed dispersal
Flower structure
5
2
Germination
Pollination
3
6
Fruit
Reproduction
without
Flowers
1. Flower Structure
• Flowers are the reproductive organs of plants
• Have male and female parts
Male Reproductive Structure
The stamen
consists of two
parts: Anther
and Filament
Anther =
produces pollen
A = Anther
F = Filament
Female Reproductive Structure
The (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 = Stigma
K = Style
L = Ovary
O = Ovule
So, this is what
sexual
reproduction in
plants looks
like...awkward
Pollination
The pollen grain contains the male gamete
How does the pollen get to the stigma?
2. Pollination: the transfer of pollen from the anther
to the stigma
Click to view the animation
Cross-pollination: pollen travels from one flower to another.
**This is desirable in plants as it promotes genetic variation.
What OR who is responsible for getting
pollen to the stigma?
Forms of Pollination:
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, bright
colors, tube-like flowers
Moth: White petals,
open at night
Fly: Rank odor, flesh
colored petals
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
carpel
ovary
ovule
Click to view the
animation
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
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 roll
ex. 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:
W
O
R
K
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
T
O
G
E
T
H
E
R
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
ovule to filament
anther to stigma
Plant Quiz
4. Cross-pollination…
Increases variation
Decreases variation
Is only performed by insects
Is only performed by wind
Plant Quiz
6. Flowers are adapted for animal-pollination by…
Having bright petals and a scent
Having a nectary
Having feathery stigmas
Having sticky stigmas
Plant Quiz
7. Which mechanism for dispersal is used by the seed shown in
the picture
water
mechanical
wind
animal
Plant Quiz
8. Which mechanism for dispersal is used by the seed shown in
the picture
animal
mechanical
water
wind