Bio Chapter 8 Deck 2 (Slides 6-10) Flashcards
Plants obtain CO2 for photosynthesis from the air through ___________ (openings in back of their leaves)
stomata
The size of the openings in plant stomata is controlled by ______ _________
GUARD CELLS
Plants obtain H2O from the ground through their _______s
roots
Root ______s absorb H2O and dissolved minerals
HAIRs
Van _______ Experiment in 1600 CONCLUDED that most of a tree’s mass gain came from added water
Helmont’s
Van Helmont’s experiment asked, do plants grow by taking material from the ____?
soil
Van Helmont _______ a seedling regularly for 5 years
watered
The seedling in Van Helmont’s experiment became a small tree and gained _____kg of mass
75
Van Helmont figured out the ______ part of the photosynthesis equation
H2O
______’s experiment of 1700 figured out the ____ part of the photosynthesis equation
Priestly
O2
Priestly took a lit candle placed a glass jar over it, and the flame ____ ______
went out
Priestly reasoned that something in the air (______) was necessary to keep the flame burning
O2
Priestly placed a sprig of ____ under the jar and the candle was able to be relit
mint
Ingenhousz proved that the effect showed by Priestly occurred only when the plant is exposed to _____
light
Ingenhousz’s experiment proved that plants need ____ to produce O2
light