Botany Test 3 Exam Questions and Answers
with Verified Solutions | Latest Updated 2026
Lecture 9 - Roots (Flashcards)
What is the radicle? The embryonic root that develops into the
plant's
primary root.
What is a root hair? A modified epidermal cell that increases
surface
area for water and mineral absorption.
What is a taproot system? A root system where the primary root
develops
from the radicle and produces lateral
branch roots.
What is a fibrous root system? A root system where the main roots
develop from
the stem and no dominant primary root
exists.
What is the cortex in roots? A region made mainly of parenchyma cells
that
store food.
, What is the pith? A central region of parenchyma cells
commonly
found in stems.
What is protoxylem? The first primary xylem tissue that forms
during
root development.
What is metaxylem? Xylem that forms after protoxylem and
contains
larger conducting cells.
What is the vascular cylinder The central portion of the root containing
(stele)? xylem
and phloem.
What is the endodermis? A single layer of tightly packed cells
surrounding
the vascular cylinder that regulates water
and
nutrient movement.
What is the Casparian strip? A band of lignin and suberin in endodermal
cell
walls that blocks passive water movement
and
forces selective uptake.
What is the pericycle? A secondary meristem located just inside
the
endodermis that produces lateral roots.
with Verified Solutions | Latest Updated 2026
Lecture 9 - Roots (Flashcards)
What is the radicle? The embryonic root that develops into the
plant's
primary root.
What is a root hair? A modified epidermal cell that increases
surface
area for water and mineral absorption.
What is a taproot system? A root system where the primary root
develops
from the radicle and produces lateral
branch roots.
What is a fibrous root system? A root system where the main roots
develop from
the stem and no dominant primary root
exists.
What is the cortex in roots? A region made mainly of parenchyma cells
that
store food.
, What is the pith? A central region of parenchyma cells
commonly
found in stems.
What is protoxylem? The first primary xylem tissue that forms
during
root development.
What is metaxylem? Xylem that forms after protoxylem and
contains
larger conducting cells.
What is the vascular cylinder The central portion of the root containing
(stele)? xylem
and phloem.
What is the endodermis? A single layer of tightly packed cells
surrounding
the vascular cylinder that regulates water
and
nutrient movement.
What is the Casparian strip? A band of lignin and suberin in endodermal
cell
walls that blocks passive water movement
and
forces selective uptake.
What is the pericycle? A secondary meristem located just inside
the
endodermis that produces lateral roots.
