warm-up: hand in graphing activity to ms. nagle. then, in your science journal today’s goal: i...
TRANSCRIPT
Plant Tropisms
Warm-up: Hand in graphing activity to Ms. Nagle. Then, in your science journal
Today’s Goal: I can explain how plants respond to the environment
Turn to page 118. Silently read page 118 and 119 Plant Tropism- Light and Gravity. Stop at Seasonal Responses. Define Tropism.
Homework: • Complete ALL REVIEW SHEETS AT END OF PACKET• Botany Test Tuesday May 12
Growth in response to a stimulusStimuli that effect plant growth:
Light (phototropism)Gravity (gravitropism)Water (hydrotropism)
Positive tropism grows towards stimulusNegative tropism grows away from stimulus
Plant TropismsOften, we don’t think of plants as being real organisms
because they don’t think or move around.
While they may not move
consciously (or very quickly)
plants do respond to changes in the
environment.
GravitropismHave you ever
seen a tree growing out of
embankment like this?
Why does this happen?
Thigmotropism
Remember, this all occurs at the cellular level!
No brain required!
Organisms response to contact
Thigmotropism
Remember, this all occurs at the cellular level!
No brain required!
Organisms response to contact
Limiting FactorsWhat do you think is meant by “limiting factor”?
What are the different things that plants need in order to survive…without which their growth would be limited?
What gas could be considered a limiting factor for humans but
NOT for plants?
TEST REVIEW
Warm-up: Turn to reviews in your packet. Then, in your science journal
Today’s Goal: I can explain how plants respond to the environment
Explain the difference between vascular seed plants and vascular seedless plants.
Homework: • Botany Test TOMORROW STUDY!
Practice Quiz
1) What type of vascular tissue is responsible for transporting water and minerals from the roots to the leaves?
Practice Quiz
6) On what part of the pistil must the pollen grains land in order to reach the ovules in the ovary?
Practice Quiz
8) What plant group includes conifers, ginkgoes, cycads and other cone-bearing plants with needles?
Practice Quiz
9) During what process do animals take in oxygen and release CO2 (the exact opposite of photosynthesis)?
Practice Quiz
1) What type of vascular tissue is responsible for transporting water and minerals from the roots to the leaves?
xylem
Practice Quiz
6) On what part of the pistil must the pollen grains land in order to reach the ovules in the ovary?
stigma
Practice Quiz
8) What plant group includes conifers, ginkgoes, cycads and other cone-bearing plants with needles?
gymnosperm
Practice Quiz
9) During what process do animals take in oxygen and release CO2 (the exact opposite of photosynthesis)?
cellular respiration