BOT3015 Quiz 2 Review (UCF) 2025 Exam Answers
What do roots do? - Answer-- Anchor plants into soil
- Absorption of water and minerals
- Store food or water
- Other specialized functions
/.What happens to an embryo's radicle upon germination? - Answer-Radicle grows out
and develops into first root. Radicle may develop into thick taproot with thinner branch
roots.
OR, after radicle formation, adventitious roots may arise that develop into a fibrous root
system
/.What are adventitious roots? - Answer-Roots that develop from a stem or leaf
/.What are fibrous roots? - Answer-Large number of fine roots of similar diameter
/.What are the four regions of the root? - Answer-Root cap, region of cell division, region
of cell elongation, region of maturation
/.What is the root cap? - Answer-A thimble-shaped mass of parenchyma cells covering
each root tip
/.What does the root cap do? - Answer-Protects tissues from damage as root grows and
secrete mucilage that acts as lubricant
/.What is gravitropism? - Answer-A plant's response to gravity (gravity perception)
/.What is the region of cell division composed of? - Answer-Apical meristem in the
center of the root tip
/.What are the three meristematic areas of the Region of Cell Division? - Answer-
Protoderm, ground meristem, procambium
/.What does the protoderm give rise to? - Answer-Epidermis
/.What does the ground meristem give rise to? - Answer-Cortex and pith
, /.What does the procambium give rise to? - Answer-Primary xylem and primary phloem
/.What occurs in the Region of Elongation? - Answer-Cells become several times their
original length, vacuoles merge
/.What occurs in the region of maturation? - Answer-Cells differentiate into various
distinctive cell types, root hairs form
/.What is the cortex? - Answer-Parenchyma cells between epidermis and vascular
cylinder
/.What does the cortex do? - Answer-Mostly stores food
/.What is the inner boundary of the cortex? - Answer-Endodermis
/.What does the endodermis consist of? - Answer-Single-layered cylinder of compact
cells; cell walls impregnated with suberin and lignin on radial and transverse walls
/.Where as Casparian strips found? - Answer-Endodermis
/.What do Casparian strips do? - Answer-They are strips that force water and other
dissolved substances entering and leaving the central core to pass through the
endodermis, regulating the types of minerals absorbed
/.Eventually the inner cell walls become thickened with __________, except for passage
cells. - Answer-suberin
/.What is the vascular cylinder? - Answer-Core of tissues inside endodermis
/.What is the pericycle? - Answer-Outer boundary of vascular cylinder
/.Most cells of vascular cylinder are made up of what? - Answer-Primary xylem or
primary phloem
/.In dicot or conifer roots - Answer-Solid core of xylem with "arms" in cross section
/.What is determinate growth? - Answer-Growth that stops after an organ is fully
expanded or after a plant has reached a certain size
/.What is indeterminate growth? - Answer-New tissues are added indefinitely, season
after season
/.What are propagative roots? - Answer-Adventitious buds on roots that develop into
suckers (aerial stems)
/.What are food storage roots? - Answer-Carbohydrates, starches, sweet potatoes
What do roots do? - Answer-- Anchor plants into soil
- Absorption of water and minerals
- Store food or water
- Other specialized functions
/.What happens to an embryo's radicle upon germination? - Answer-Radicle grows out
and develops into first root. Radicle may develop into thick taproot with thinner branch
roots.
OR, after radicle formation, adventitious roots may arise that develop into a fibrous root
system
/.What are adventitious roots? - Answer-Roots that develop from a stem or leaf
/.What are fibrous roots? - Answer-Large number of fine roots of similar diameter
/.What are the four regions of the root? - Answer-Root cap, region of cell division, region
of cell elongation, region of maturation
/.What is the root cap? - Answer-A thimble-shaped mass of parenchyma cells covering
each root tip
/.What does the root cap do? - Answer-Protects tissues from damage as root grows and
secrete mucilage that acts as lubricant
/.What is gravitropism? - Answer-A plant's response to gravity (gravity perception)
/.What is the region of cell division composed of? - Answer-Apical meristem in the
center of the root tip
/.What are the three meristematic areas of the Region of Cell Division? - Answer-
Protoderm, ground meristem, procambium
/.What does the protoderm give rise to? - Answer-Epidermis
/.What does the ground meristem give rise to? - Answer-Cortex and pith
, /.What does the procambium give rise to? - Answer-Primary xylem and primary phloem
/.What occurs in the Region of Elongation? - Answer-Cells become several times their
original length, vacuoles merge
/.What occurs in the region of maturation? - Answer-Cells differentiate into various
distinctive cell types, root hairs form
/.What is the cortex? - Answer-Parenchyma cells between epidermis and vascular
cylinder
/.What does the cortex do? - Answer-Mostly stores food
/.What is the inner boundary of the cortex? - Answer-Endodermis
/.What does the endodermis consist of? - Answer-Single-layered cylinder of compact
cells; cell walls impregnated with suberin and lignin on radial and transverse walls
/.Where as Casparian strips found? - Answer-Endodermis
/.What do Casparian strips do? - Answer-They are strips that force water and other
dissolved substances entering and leaving the central core to pass through the
endodermis, regulating the types of minerals absorbed
/.Eventually the inner cell walls become thickened with __________, except for passage
cells. - Answer-suberin
/.What is the vascular cylinder? - Answer-Core of tissues inside endodermis
/.What is the pericycle? - Answer-Outer boundary of vascular cylinder
/.Most cells of vascular cylinder are made up of what? - Answer-Primary xylem or
primary phloem
/.In dicot or conifer roots - Answer-Solid core of xylem with "arms" in cross section
/.What is determinate growth? - Answer-Growth that stops after an organ is fully
expanded or after a plant has reached a certain size
/.What is indeterminate growth? - Answer-New tissues are added indefinitely, season
after season
/.What are propagative roots? - Answer-Adventitious buds on roots that develop into
suckers (aerial stems)
/.What are food storage roots? - Answer-Carbohydrates, starches, sweet potatoes
