biol 227 Final Exam Questions with
Complete Answers
Flower pot leaves provide ________. In turn, adventitious roots harvest minerals from the
resulting accumulation of nutrient-rich material. - ANS a haven for ant nests
Which is a morphological adaptation to reduce water loss from the leaf? - ANS densely hairy
leaves
Which of the following is a typical characteristic of a shade leaf (as opposed to a leaf of the
same plant that is fully exposed to the sun)? - ANS fewer, well-defined mesophyll layers
a leaf that lacks a petiole is termed - ANS sessile
the leaf pigments mostly responsible for gold to orange leaf colors in the fall are - ANS
carotenes
In the abscission zone of the leaf, which of the following is closest to the stem? - ANS protective
layer
Which of the following beverages is manufactured or brewed from leaves?
- mate
- tequila
- pulque
- absinthe
- all of these answers are correct - ANS all of these answers are correct
,In an energy-conscious world, people may plant more trees around their homes because
________. - ANS leaves of trees provide shade and reduce energy use for cooling homes
all leaves originate as - ANS primordia
T/F: Monocots generally have net-veined leaves - ANS false
T/F: Leaf mesophyll consists primarily of chlorenchyma tissue - ANS True
T/F: if you were looking for bundle sheath cells in a leaf, you would usually find them forming
a layer next to the upper epidermis - ANS false
T/F: stomata open when the water content of the guard cells increases - ANS true
T/F: Insectivorous plants trap and digest insects and other small organisms to get
nitrogen which is lacking in the soils of their environments - ANS True
T/F: the protective layer of an abscission zone serves to prevent water loss after the leaf falls
off the plant - ANS true
T/F: Anthocyanins are the principal pigments responsible for yellow and orange colors in the
fall - ANS False
T/F: most natural ropes and twines are made from leaf fibers - ANS true
which of the following is a function of a stoma?
- diffusion of oxygen out of a leaf
- diffusion of carbon dioxide into the leaf
,- facilitating transpiration
- all of these answers are correct - ANS all of these answers are correct
which of the following is primarily responsible for forcing water out of hydathodes? - ANS root
pressures
A ________ leaf has a single expanse of blade tissue. - ANS simple
when three or more leaves occur at a node, the leaf arrangement is said to be - ANS whorled
In a mature, woody dicot stem, the tissue between the xylem and the phloem is the ________. -
ANS vascular cambium
The procambium produces - ANS primary xylem and phloem
The ________ is a primary meristem that produces parenchyma cells of the cortex. - ANS
ground meristem
Which of the following describe leaf gaps and bud gaps? - ANS gaps in the cylinders of xylem
and phloem where traces branch off from them
Cells produced by the vascular cambium do NOT include - ANS Phelloderm
Increase in girth of a tree is due to the activity of - ANS vascular cambium
axillary buds are found in - ANS angles between the petioles and the stem
this tissue is responsible for the production of cork cells - ANS phellogen
, retardation of water loss by cork cells is provided by - ANS suberin and waxes
which of the following statement pertaining to monocots is true? - ANS they have no vascular
cambium
Which of the following function primarily in the lateral conduction of food in a stem? - ANS rays
The tyloses that prevent conduction of any kind in wood are most frequently found in - ANS
xylem cells
siphonosteles occur in most - ANS ferns
Discrete patches of xylem and phloem found in herbaceous dicot stems are called - ANS
vascular bundles
Older, nonfunctioning xylem is called - ANS heartwood
A twig's age can be determined by - ANS counting the number of groups of bud scale scars on it
Monocot stems have discrete regions of xylem and phloem arranged ________; herbaceous
dicot stems have discrete regions of xylem and phloem arranged ________. - ANS randomly; in
a ring
which function does the stem have in common with the root? - ANS conduction
The stems of all flowering plants and conifers have ________. - ANS eusteles
Horizontal stems that produce roots and shoots are - ANS stolons
Complete Answers
Flower pot leaves provide ________. In turn, adventitious roots harvest minerals from the
resulting accumulation of nutrient-rich material. - ANS a haven for ant nests
Which is a morphological adaptation to reduce water loss from the leaf? - ANS densely hairy
leaves
Which of the following is a typical characteristic of a shade leaf (as opposed to a leaf of the
same plant that is fully exposed to the sun)? - ANS fewer, well-defined mesophyll layers
a leaf that lacks a petiole is termed - ANS sessile
the leaf pigments mostly responsible for gold to orange leaf colors in the fall are - ANS
carotenes
In the abscission zone of the leaf, which of the following is closest to the stem? - ANS protective
layer
Which of the following beverages is manufactured or brewed from leaves?
- mate
- tequila
- pulque
- absinthe
- all of these answers are correct - ANS all of these answers are correct
,In an energy-conscious world, people may plant more trees around their homes because
________. - ANS leaves of trees provide shade and reduce energy use for cooling homes
all leaves originate as - ANS primordia
T/F: Monocots generally have net-veined leaves - ANS false
T/F: Leaf mesophyll consists primarily of chlorenchyma tissue - ANS True
T/F: if you were looking for bundle sheath cells in a leaf, you would usually find them forming
a layer next to the upper epidermis - ANS false
T/F: stomata open when the water content of the guard cells increases - ANS true
T/F: Insectivorous plants trap and digest insects and other small organisms to get
nitrogen which is lacking in the soils of their environments - ANS True
T/F: the protective layer of an abscission zone serves to prevent water loss after the leaf falls
off the plant - ANS true
T/F: Anthocyanins are the principal pigments responsible for yellow and orange colors in the
fall - ANS False
T/F: most natural ropes and twines are made from leaf fibers - ANS true
which of the following is a function of a stoma?
- diffusion of oxygen out of a leaf
- diffusion of carbon dioxide into the leaf
,- facilitating transpiration
- all of these answers are correct - ANS all of these answers are correct
which of the following is primarily responsible for forcing water out of hydathodes? - ANS root
pressures
A ________ leaf has a single expanse of blade tissue. - ANS simple
when three or more leaves occur at a node, the leaf arrangement is said to be - ANS whorled
In a mature, woody dicot stem, the tissue between the xylem and the phloem is the ________. -
ANS vascular cambium
The procambium produces - ANS primary xylem and phloem
The ________ is a primary meristem that produces parenchyma cells of the cortex. - ANS
ground meristem
Which of the following describe leaf gaps and bud gaps? - ANS gaps in the cylinders of xylem
and phloem where traces branch off from them
Cells produced by the vascular cambium do NOT include - ANS Phelloderm
Increase in girth of a tree is due to the activity of - ANS vascular cambium
axillary buds are found in - ANS angles between the petioles and the stem
this tissue is responsible for the production of cork cells - ANS phellogen
, retardation of water loss by cork cells is provided by - ANS suberin and waxes
which of the following statement pertaining to monocots is true? - ANS they have no vascular
cambium
Which of the following function primarily in the lateral conduction of food in a stem? - ANS rays
The tyloses that prevent conduction of any kind in wood are most frequently found in - ANS
xylem cells
siphonosteles occur in most - ANS ferns
Discrete patches of xylem and phloem found in herbaceous dicot stems are called - ANS
vascular bundles
Older, nonfunctioning xylem is called - ANS heartwood
A twig's age can be determined by - ANS counting the number of groups of bud scale scars on it
Monocot stems have discrete regions of xylem and phloem arranged ________; herbaceous
dicot stems have discrete regions of xylem and phloem arranged ________. - ANS randomly; in
a ring
which function does the stem have in common with the root? - ANS conduction
The stems of all flowering plants and conifers have ________. - ANS eusteles
Horizontal stems that produce roots and shoots are - ANS stolons
