BIO 112 Exam Questions and Verified Answers/Accurate Solutions| Already Graded A+
The Casparian strip ensures that water and dissolved minerals traveling laterally from the root
hairs _________ via the cell walls of the root must change course and travel ________ via the
cytoplasm in order to pass through the selective semi-permeable plasma membrane of the
endodermis cells and enter the root xylem. Apoplastically ---- symplastically
plant A has a solute potential of -0.3 MPa and a pressure potential of +0.4 MPA. Plant cell B has
a solute potential of -0.1 MPa and a pressure potential of +0.4 MPa. Which way will the water
flow over all between these cells? From B to A higher to lower
In a population of polar bears, which is the evolutionarily fittest? the bear that leaves the
most descendants
A source is a place where sugar _____ the phloem and a sink is a place where sugar ______ the
phloem. enters---- exits
Legumes, but very few other families, have nitrogen- fixing bacteria within nodules in their
roots. true
when potassium ions are pumped into guard cells, the stomata----- and transpiration---- -
open
-increases
The ______ region of a root creates the force that pushes it through the soil and the ______
region of the root secretes lubrication to assist. -Zone of elongation
- root cap
The vascular cambium produces _____ to the internal side and ______ to the external side.
xylem .... phloem
, If you hammered a metal spike into a young woody eudicot tree at a location one meter off the
ground before leaving home for college, at what approximate height will the spike be when you
return home (employed, happy, and oh so wise) ten years later? The metal spike will be at
the same height as when you left but the trunk's outer layers may have grown around it a bit.
Mycohorrhizae enhance plant nutrition mainly by ____. absorbing water and minerals
through the fungal hyphae.
What is not alive at maturity? sclerenchyma
Which of the following will leave through stomata during active photosynthesis? H20, O2
In addition to nitrogen, which element also frequently limits plant growth when it is not
adequately available in the soil? phosphorous
The stomata in leaves are part of which tissue system? dermal
Carnivorous plants have evolved mechanisms that trap and digest small animals. The products
of this digestion are used to supplement the plant's supply of __. minerals
Which of the following will cause plants to bend toward the light? asymmetrical cell
elongation due to different auxin conentrations in shoot cells on the shady and sunny side of a
plant.
What has the lowest (most negative) water potential? leaf air spaces
Nitrogen fixation is a process that converts atmospheric nitrogen gas to ammonia
The Casparian strip ensures that water and dissolved minerals traveling laterally from the root
hairs _________ via the cell walls of the root must change course and travel ________ via the
cytoplasm in order to pass through the selective semi-permeable plasma membrane of the
endodermis cells and enter the root xylem. Apoplastically ---- symplastically
plant A has a solute potential of -0.3 MPa and a pressure potential of +0.4 MPA. Plant cell B has
a solute potential of -0.1 MPa and a pressure potential of +0.4 MPa. Which way will the water
flow over all between these cells? From B to A higher to lower
In a population of polar bears, which is the evolutionarily fittest? the bear that leaves the
most descendants
A source is a place where sugar _____ the phloem and a sink is a place where sugar ______ the
phloem. enters---- exits
Legumes, but very few other families, have nitrogen- fixing bacteria within nodules in their
roots. true
when potassium ions are pumped into guard cells, the stomata----- and transpiration---- -
open
-increases
The ______ region of a root creates the force that pushes it through the soil and the ______
region of the root secretes lubrication to assist. -Zone of elongation
- root cap
The vascular cambium produces _____ to the internal side and ______ to the external side.
xylem .... phloem
, If you hammered a metal spike into a young woody eudicot tree at a location one meter off the
ground before leaving home for college, at what approximate height will the spike be when you
return home (employed, happy, and oh so wise) ten years later? The metal spike will be at
the same height as when you left but the trunk's outer layers may have grown around it a bit.
Mycohorrhizae enhance plant nutrition mainly by ____. absorbing water and minerals
through the fungal hyphae.
What is not alive at maturity? sclerenchyma
Which of the following will leave through stomata during active photosynthesis? H20, O2
In addition to nitrogen, which element also frequently limits plant growth when it is not
adequately available in the soil? phosphorous
The stomata in leaves are part of which tissue system? dermal
Carnivorous plants have evolved mechanisms that trap and digest small animals. The products
of this digestion are used to supplement the plant's supply of __. minerals
Which of the following will cause plants to bend toward the light? asymmetrical cell
elongation due to different auxin conentrations in shoot cells on the shady and sunny side of a
plant.
What has the lowest (most negative) water potential? leaf air spaces
Nitrogen fixation is a process that converts atmospheric nitrogen gas to ammonia
