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BZ 440 Exam I (Review Q's) Questions and
Correct Answers/ Latest Update / Already
Graded
Name 4 plant organs
Ans: Root, stem, leaf, flower
Name 7 plant organelles and give a function for each
Ans: Nucleus (gene expression, cell management), vacuole
(storage, degradation, recycling), ER (protein and fat
synthesis), Golgi (protein and fat modification and shipping),
oxysome (detoxification, gluconeogenesis), chloroplast
(photosynthesis), mitochondrion (respiration)
Name 3 other large cellular structures in plant cells, and function
Ans: Ribosomes (protein synthesis), cell wall (sturdiness),
cytoskeleton (sturdiness, movement)
What are symplast and apoplast? Where do plasmodesmata come in?
Ans: Symplast is collective space in organ within cell
membranes, connected via plasmadesmata. Apoplast is
collective space in organ outside cell membranes (cell walls and
xylem)
All rights reserved © 2025/ 2026 |
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What are xylem and phloem and are they symplast or apoplast?
Ans: Xylem is vascular tissue that brings water and nutrients
from root to shoot; part of apoplast. Phloem is vascular tissue
that brings water and sugars and remobilized nutrients from
mature leaves (source organs) to other plant parts (sinks); part
of symplast.
What is osmosis?
Ans: Passive movement of water across membranes
What is meant with hypotonic, hypertonic and isotonic?
Ans: Relative total solute concentration on either side of a
membrane. Isotonic = equal concentrations on both s ides.
Hypo/hypertonic: one is lower (hypo) relative to the other side
(hyper).
What is water potential and what are its two main components?
Ans: The capacity to attract water, due to either the solutes
present (solute potential component) or the pressure present
(pressure potential component). Higher solute concentration
means more negative solute potential, so higher capacity to
All rights reserved © 2025/ 2026 |
BZ 440 Exam I (Review Q's) Questions and
Correct Answers/ Latest Update / Already
Graded
Name 4 plant organs
Ans: Root, stem, leaf, flower
Name 7 plant organelles and give a function for each
Ans: Nucleus (gene expression, cell management), vacuole
(storage, degradation, recycling), ER (protein and fat
synthesis), Golgi (protein and fat modification and shipping),
oxysome (detoxification, gluconeogenesis), chloroplast
(photosynthesis), mitochondrion (respiration)
Name 3 other large cellular structures in plant cells, and function
Ans: Ribosomes (protein synthesis), cell wall (sturdiness),
cytoskeleton (sturdiness, movement)
What are symplast and apoplast? Where do plasmodesmata come in?
Ans: Symplast is collective space in organ within cell
membranes, connected via plasmadesmata. Apoplast is
collective space in organ outside cell membranes (cell walls and
xylem)
All rights reserved © 2025/ 2026 |
, Page |2
What are xylem and phloem and are they symplast or apoplast?
Ans: Xylem is vascular tissue that brings water and nutrients
from root to shoot; part of apoplast. Phloem is vascular tissue
that brings water and sugars and remobilized nutrients from
mature leaves (source organs) to other plant parts (sinks); part
of symplast.
What is osmosis?
Ans: Passive movement of water across membranes
What is meant with hypotonic, hypertonic and isotonic?
Ans: Relative total solute concentration on either side of a
membrane. Isotonic = equal concentrations on both s ides.
Hypo/hypertonic: one is lower (hypo) relative to the other side
(hyper).
What is water potential and what are its two main components?
Ans: The capacity to attract water, due to either the solutes
present (solute potential component) or the pressure present
(pressure potential component). Higher solute concentration
means more negative solute potential, so higher capacity to
All rights reserved © 2025/ 2026 |
