Plant Transport
What does the phloem transport?
Sugar, Hormones, Electrical signals, Amino acids
Difference between positive phototropism and negative phototropism
Positive- toward light
negative- away from light
Soil particles are typically
negatively charged
What molecules are reactants in photosynthesis
Water, CO2 and light
There is a bigger concentration of H20 outside the leaf.
False it is bigger inside the leaf
What drives the cotransport of sucrose in phloem?
Proton gradient driven by ATP
What does red light cause a plant/seed to do?
Germinate and stimulate horizontal/lateral growth
Where does the new mass of a growing plant come from
CO2
What is an epiphyte
Lives on another plant and makes its own nutrients
A CAM plant is most bitter right before the sun comes up.
True
Choose the best answer for ordering water potential in these plant structures from highest water potential to the lowest water potential.
Root<Trunk<Leaves
Gravitropism is explained by what hypothesis?
Falling Statolith Hypothesis
What are the properties of humus that make it important?
Prevent soil packing, provide nutrients, provide an environment for organisms
Phloem sap moves from _____ to _____
source to sink
A dicot’s vascular tissue in its root is shaped like an X.
True
What drives the movement of sucrose within the phloem sieve tubes?
Positive pressure
____ light causes a plant to grow toward it
blue
4 major inorganic components of soil and list them in order of size of particles (big to small)
Gravel, sand, silt, clay
are the roots higher or lower negativity?
lower
Xylem is alive at maturity.
False they are dead at maturity
What are the two main components of the phloem?
Companion cells and sieve tube elements
Will a falling statolith cause a stem to bend toward gravity why or why not?
No it will bend away because stems are an example of negative gravitropism, however, roots bend toward gravity
What are the 9 plant macronutrients in order
Carbon, Oxygen, Hydrogen, Nitrogen, Potassium, Calcium, Magnesium, Phosphorus, Sulfur
What is the job of the collenchyma vs sclerenchyma?
Flexible support vs skeleton of plant
One plant can adapt to have less mesophyll cells when there is less light.
False one plant would have to acclimatize