Bio 230 exam 2 2026/2027 || Questions with
Correct Answers|| GRADE A+|| 100% PASS!!!
Leaf main function - ANSWER-photosynthesis
are leaves determinate or indeterminate? - ANSWER-determinate
Palisade mesophyll function - ANSWER-High chlorophyll, photosynthesis
Spongy mesophyll function - ANSWER-Gas exchange
Stomata function - ANSWER-CO₂ in, water vapor out
Cuticle function - ANSWER-Prevent desiccation
Difference between simple and compound leaf - ANSWER-Simple = one blade;
Compound = multiple leaflets
Leaf arrangements (phyllotaxis) - ANSWER-Spiral (1) Opposite (2) Whorled (more than
2)
- Monocot venation
- Eudicot venation - ANSWER-- Parallel
- Net/reticulate
Roots function - ANSWER-absorb nutrients in soil, anchor plant, and store food
Stems function - ANSWER-support and transport
, What distinguishes stem from root? - ANSWER-Buds present on stems
Xylem transports - ANSWER-Water & minerals (root → leaf)
Phloem transports - ANSWER-Sugars (leaf → rest of plant)
- Apical meristem
- Lateral meristem - ANSWER-- Primary growth (length)
- Secondary growth (width)
- Vascular cambium produces
- Cork cambium produces - ANSWER-- Secondary xylem (inside), secondary phloem
(outside)
- Periderm (outer bark)
- Secondary xylem =
- Secondary phloem = - ANSWER-- Wood
- Inner bark
tree rings form because - ANSWER-Seasonal growth differences
Dendrochronology - ANSWER-tree ring dating
Cambium division directions - ANSWER-Periclinal (adds tissues), Anticlinal (maintains
circumference)
- Bifacial cambium
- Unifacial cambium - ANSWER-- Produces xylem inward + phloem outward
- Produces mainly one tissue direction
Why woody plants can grow large - ANSWER-Radial divisions in cambium
Early vascular plants limited in girth because - ANSWER-no radial cambium divisions
Lignophytes include - ANSWER-Progymnosperms and seed plants
Archaeopteris significance - ANSWER-first modern tree, thus creating first modern
forests
- Sepals function →
- Petals function → - ANSWER-- Protect the bud
- Attract pollinators
Stamen produces - ANSWER-pollen
Correct Answers|| GRADE A+|| 100% PASS!!!
Leaf main function - ANSWER-photosynthesis
are leaves determinate or indeterminate? - ANSWER-determinate
Palisade mesophyll function - ANSWER-High chlorophyll, photosynthesis
Spongy mesophyll function - ANSWER-Gas exchange
Stomata function - ANSWER-CO₂ in, water vapor out
Cuticle function - ANSWER-Prevent desiccation
Difference between simple and compound leaf - ANSWER-Simple = one blade;
Compound = multiple leaflets
Leaf arrangements (phyllotaxis) - ANSWER-Spiral (1) Opposite (2) Whorled (more than
2)
- Monocot venation
- Eudicot venation - ANSWER-- Parallel
- Net/reticulate
Roots function - ANSWER-absorb nutrients in soil, anchor plant, and store food
Stems function - ANSWER-support and transport
, What distinguishes stem from root? - ANSWER-Buds present on stems
Xylem transports - ANSWER-Water & minerals (root → leaf)
Phloem transports - ANSWER-Sugars (leaf → rest of plant)
- Apical meristem
- Lateral meristem - ANSWER-- Primary growth (length)
- Secondary growth (width)
- Vascular cambium produces
- Cork cambium produces - ANSWER-- Secondary xylem (inside), secondary phloem
(outside)
- Periderm (outer bark)
- Secondary xylem =
- Secondary phloem = - ANSWER-- Wood
- Inner bark
tree rings form because - ANSWER-Seasonal growth differences
Dendrochronology - ANSWER-tree ring dating
Cambium division directions - ANSWER-Periclinal (adds tissues), Anticlinal (maintains
circumference)
- Bifacial cambium
- Unifacial cambium - ANSWER-- Produces xylem inward + phloem outward
- Produces mainly one tissue direction
Why woody plants can grow large - ANSWER-Radial divisions in cambium
Early vascular plants limited in girth because - ANSWER-no radial cambium divisions
Lignophytes include - ANSWER-Progymnosperms and seed plants
Archaeopteris significance - ANSWER-first modern tree, thus creating first modern
forests
- Sepals function →
- Petals function → - ANSWER-- Protect the bud
- Attract pollinators
Stamen produces - ANSWER-pollen
