BIODIVERSITY EXAM 3 2026 UPDATED EXAM QUESTIONS
& ANSWERS WITH DETAILED RATIONALES | INSTANT PDF
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Class Monoplacophora (Neopilina) - correct answer -Living Fossil
*only living representative that shows direct connection to segmented worms
Epidermis of a leaf is composed of - correct answer -Cuticle, Guard cells, and stomata
Cuticle (Leaf) - correct answer -No cellular outer layer on a leaf, helps prevent water loss, made
of a protein called cutin
Guard cells (Leaf) - correct answer -open and close stomata (2 per stomata)
Stomata - correct answer -A microscopic pore surrounded by guard cells in the epidermis of
leaves and stems that allows gas exchange between the environment and the interior of the
plant.
(T/F) All stomata are found o the underside of a leaf - correct answer -False
Middle Layer of Leaf is called ____________ and is composed of - correct answer -Mesophyll;
Contains two types of Parenchyama
-Spongey- used for gas exchange
-Palaside- Used for photosynthesis
Parenchyma - correct answer -Fundamental tissue is mesophyll of leaf composed of thin-walled
living cells that function in photosynthesis
, Vein (Leaf) - correct answer -AKA Vascular Bundle; contain xylem and phloem
Zones of Cortex (Stem) - correct answer --Collenchyma (Support)
-Sclerenchyma (Support)
-Vascular tissue (Transport)
-Procambium (Growth)
Ground Tissue - correct answer --tissue found between the vascular and dermal tissue
Collenchyma - correct answer -type of ground tissue cell in the stem with a strong, flexible cell
wall; helps support larger plants
Sclerenchyma - correct answer -type of ground-tissue cell in stem with an extremely thick, rigid
cell wall that makes ground tissue tough and strong
Which way does the procambium in stems grow - correct answer -for xylem, inwards
for phloem, outwards
What type of plant has ring of xylem and phloem with center region called the pith - correct
answer -Dicot Plant
Monocot Plants contain this i their stem for photosynthesis - correct answer -Parenchyma
Types of Vascular tissue and what do they carry - correct answer -xylem-water transport
phloem-food transport
Types of Cells in Xylem - correct answer -Traicheids (occur alone in wooded plants/ferns)
& ANSWERS WITH DETAILED RATIONALES | INSTANT PDF
DOWNLOAD
Class Monoplacophora (Neopilina) - correct answer -Living Fossil
*only living representative that shows direct connection to segmented worms
Epidermis of a leaf is composed of - correct answer -Cuticle, Guard cells, and stomata
Cuticle (Leaf) - correct answer -No cellular outer layer on a leaf, helps prevent water loss, made
of a protein called cutin
Guard cells (Leaf) - correct answer -open and close stomata (2 per stomata)
Stomata - correct answer -A microscopic pore surrounded by guard cells in the epidermis of
leaves and stems that allows gas exchange between the environment and the interior of the
plant.
(T/F) All stomata are found o the underside of a leaf - correct answer -False
Middle Layer of Leaf is called ____________ and is composed of - correct answer -Mesophyll;
Contains two types of Parenchyama
-Spongey- used for gas exchange
-Palaside- Used for photosynthesis
Parenchyma - correct answer -Fundamental tissue is mesophyll of leaf composed of thin-walled
living cells that function in photosynthesis
, Vein (Leaf) - correct answer -AKA Vascular Bundle; contain xylem and phloem
Zones of Cortex (Stem) - correct answer --Collenchyma (Support)
-Sclerenchyma (Support)
-Vascular tissue (Transport)
-Procambium (Growth)
Ground Tissue - correct answer --tissue found between the vascular and dermal tissue
Collenchyma - correct answer -type of ground tissue cell in the stem with a strong, flexible cell
wall; helps support larger plants
Sclerenchyma - correct answer -type of ground-tissue cell in stem with an extremely thick, rigid
cell wall that makes ground tissue tough and strong
Which way does the procambium in stems grow - correct answer -for xylem, inwards
for phloem, outwards
What type of plant has ring of xylem and phloem with center region called the pith - correct
answer -Dicot Plant
Monocot Plants contain this i their stem for photosynthesis - correct answer -Parenchyma
Types of Vascular tissue and what do they carry - correct answer -xylem-water transport
phloem-food transport
Types of Cells in Xylem - correct answer -Traicheids (occur alone in wooded plants/ferns)
