Transcript Relative Humidity - Los Gatos High School

Announcements
• Test Corrections: 12/6 – 12/16
• Take Biospheres Home
• Biosphere Report DUE NEXT CLASS!
Question of the Day
Question: Describe vegetative reproduction.
Answer: … … …
Lab 6.1: Zebrina &
Lab 6.2:Planaria
Lab 13.2: Flowers &
Vocabulary Sheet
Unit 5 Vocabulary
5. petals- brightly colored leaves used to attract pollinators
4. sepals- specialized
leaves that enclose a flower
bud before it opens
Unit 5 Vocabulary
6. stamen- male part of a flower
7. anther- produce pollen grains
8. filament- support anthers
Unit 5 Vocabulary
9. pollen grains- carry sperm
10. sperm cell- male reproductive cell
Pollen In Air:
Magnified Pollen:
Unit 5 Vocabulary
12. stigma- sticky female part used to capture pollen
15. style- narrow part of the carpel that
supports the stigma
17. ovary- where ovules develop
18. ovules- structure containing an egg
14. carpel- a stigma, style, & ovary
11. pistil- all of the carpels together
Lab 13.2: Flowers
Lab 13.3: Fruits, Nuts, & Seeds
& Vocabulary Sheet
Pollen Dispersal
• Animals
– pollen is usually barbed or
sticky
– Mammals, birds, insects (bees, flies, etc.)
• Wind
– pollen is usually light &
aerodynamic
• Water
– for plants that grow underwater
Unit 5 Vocabulary
24. fertilization- the joining of sperm and egg
16. pollen tube- grows towards egg & contains two sperm nuclei
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
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
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
Seed Dispersal
• Wind
– 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
Fruit: Matured Ovary
• Fruit- matured ovary and other floral parts; used to be a flower
1 flower, 1 ovary
1 flower, many ovaries
Nut: Matured Ovary
• Nut- matured ovary and
other floral parts with hard
shell; used to be a flower