2. Announcements Test Corrections: 12/6 – 12/16 Take Biospheres Home
Biosphere Report DUE NEXT CLASS!

3. Question of the Day
Question: Describe vegetative reproduction. Answer: … … …
More than 25 types of elements
4’s Turn In:
p. 703 A.Q. 1ab, 3ab

4. Lab 6.1: Zebrina & Lab 6.2:Planaria

5. Lab 13.2: Flowers &
Vocabulary Sheet

6. Unit 5 Vocabulary
5. petals- brightly colored leaves used to attract pollinators
4. sepals- specialized leaves that enclose a flower bud before it opens

7. Unit 5 Vocabulary 6. stamen- male part of a flower
7. anther- produce pollen grains
8. filament- support anthers

8. Unit 5 Vocabulary 9. pollen grains- carry sperm
10. sperm cell- male reproductive cell
Pollen In Air:
Magnified Pollen:

9. Unit 5 Vocabulary
12. stigma- sticky female part used to capture pollen
style- narrow part of the carpel that
supports the stigma
ovary- where ovules develop
ovules- structure containing an egg
14. carpel- a stigma, style, & ovary
11. pistil- all of the carpels together

10. Lab 13.2: Flowers
Warn them about composite flowers.

11. Lab 13.3: Fruits, Nuts, & Seeds
& Vocabulary Sheet

12. Pollen Dispersal Animals Wind Water pollen is usually barbed or sticky
Mammals, birds, insects (bees, flies, etc.)
Wind
pollen is usually light & aerodynamic
Water
for plants that grow underwater
80% of pollination is from animals

13. Unit 5 Vocabulary fertilization- the joining of sperm and egg
pollen tube- grows towards egg & contains two sperm nuclei
Ovum = singular, ova = plural

14. Fertilization Pollen swells from moisture on stigma
Pollen tube grows so that sperm can reach the egg
Fastest growing cell type known
Species must match
Ovum = singular, ova = plural

15. Unit 5 Vocabulary
22. seed- plant embryo and food supply enclosed together in a protective seed coat
21. endosperm- energy-rich tissue that nourishes a seedling as it grows
23. fruit- energy-rich tissue that contains one or more seeds

16. Seed Dispersal Dispersal: movement away from an existing population
Animals
Birds: reliant on color when finding food – red, hot pink, orange.
Mammals: seeds pass through digestive system; may contain laxative
Insects: have excellent senses of smell or color vision or both
Birds lack sensitive noses

17. Seed Dispersal Wind Water Usually light (low density) & aerodynamic
May have wings
Water
For plants that grow in or near large bodies of water (eg. coconut)
Low density: float
Must be somewhat waterproof
Birds lack sensitive noses

18. Fruit: Matured Ovary
Fruit- matured ovary and other floral parts; used to be a flower
Pea: 1 flower, 1 ovary
Raspberry: 1 flower, many ovaries
1 flower, 1 ovary
1 flower, many ovaries

19. Nut: Matured Ovary
Nut- matured ovary and other floral parts with hard shell; used to be a flower
While there are many obvious difference, the scientific community considers a nut to be the same as a fruit, at least the outer shell of the nut is the fruit. The definition of a fruit is simply stated as the distinctive mature ovary of any flower, plant, or tree, that contains seeds. Since the nut that we eat is technically a seed, the outer layer (shell) is considered to be the fruit.