TTU BIO 1404 Final Exam Review
Questions & Answers (Grade A+)
Casparian strip function -
correct answer ✅filters water entering plant; hydrophobic and
forces water into simplest
plant stigma -
correct answer ✅Pollen lands on it (sticky) and produces a pollen
tube to reach the ovule.
Anther -
correct answer ✅produces the pollen, the male sex cells (sperm)
bifacial cambium -
correct answer ✅in seed plants the vascular cambium is 2 faced,
produces xylem inside and phloem outside
Bifacial cambium vs. Unifacial cambium -
correct answer ✅univascular cambium ring only grows secondary
xylem inward; Bifacial grows secondary xylem both ways
Mycorrhizae -
correct answer ✅A mutualistic association of plant roots and
fungus
,TTU BIO 1404 Final Exam Review
Questions & Answers (Grade A+)
-Both benefit (mutualism)
-Fungus gets carbon (energy)
-Plant gets increase access to inorganic nutrients (especially
phosphorous) and water
Snow plant (Sarcodes sanguinea) -
correct answer ✅Steals energy from pine trees through
mycorrhizae
vessel elements -
correct answer ✅short, wide tube allows a smooth passage of
water between cells; more likely to cavitate
-needs wet environ.
-have tracheids
-only some vascular plants have it
tracheids -
correct answer ✅long, thin cells= slower water movement
-have tapered ends
,TTU BIO 1404 Final Exam Review
Questions & Answers (Grade A+)
-have pits (regulate speed)
-all vascular plants have it
Clay -
correct answer ✅-holds most water @ saturation pt.
-negatively charged
-too packed= bad o2 avaiability, bad for roots
-low leaching= good fertility
-highest cation retention
Cavitation -
correct answer ✅-happens in xylem
-at every vessel element
-water channel breaks causing plant to potentially wilt
Main point of photosynthesis -
correct answer ✅fuel Calvin cycle with ATP & NADPH
Leaves stem from... -
correct answer ✅axillary meristem bud/node
, TTU BIO 1404 Final Exam Review
Questions & Answers (Grade A+)
Shoots -
correct answer ✅-section above ground
-grow in response to shade and sun
-branch only at nodes
Roots grow in response to -
correct answer ✅-resources in soil
-branch anywhere
Frits Went & James Bonner (Muller's response) -
correct answer ✅studied ambrosia (had undergrowth) and encelia
(no undergrowth) and hypothesized allelochemicals were
responsible
Muller found ambrosia had same effect as encelia on tomatoes
Thomas Chamberlain -
correct answer ✅proposed idea that scientists should not get too
attached to their own ideas
Questions & Answers (Grade A+)
Casparian strip function -
correct answer ✅filters water entering plant; hydrophobic and
forces water into simplest
plant stigma -
correct answer ✅Pollen lands on it (sticky) and produces a pollen
tube to reach the ovule.
Anther -
correct answer ✅produces the pollen, the male sex cells (sperm)
bifacial cambium -
correct answer ✅in seed plants the vascular cambium is 2 faced,
produces xylem inside and phloem outside
Bifacial cambium vs. Unifacial cambium -
correct answer ✅univascular cambium ring only grows secondary
xylem inward; Bifacial grows secondary xylem both ways
Mycorrhizae -
correct answer ✅A mutualistic association of plant roots and
fungus
,TTU BIO 1404 Final Exam Review
Questions & Answers (Grade A+)
-Both benefit (mutualism)
-Fungus gets carbon (energy)
-Plant gets increase access to inorganic nutrients (especially
phosphorous) and water
Snow plant (Sarcodes sanguinea) -
correct answer ✅Steals energy from pine trees through
mycorrhizae
vessel elements -
correct answer ✅short, wide tube allows a smooth passage of
water between cells; more likely to cavitate
-needs wet environ.
-have tracheids
-only some vascular plants have it
tracheids -
correct answer ✅long, thin cells= slower water movement
-have tapered ends
,TTU BIO 1404 Final Exam Review
Questions & Answers (Grade A+)
-have pits (regulate speed)
-all vascular plants have it
Clay -
correct answer ✅-holds most water @ saturation pt.
-negatively charged
-too packed= bad o2 avaiability, bad for roots
-low leaching= good fertility
-highest cation retention
Cavitation -
correct answer ✅-happens in xylem
-at every vessel element
-water channel breaks causing plant to potentially wilt
Main point of photosynthesis -
correct answer ✅fuel Calvin cycle with ATP & NADPH
Leaves stem from... -
correct answer ✅axillary meristem bud/node
, TTU BIO 1404 Final Exam Review
Questions & Answers (Grade A+)
Shoots -
correct answer ✅-section above ground
-grow in response to shade and sun
-branch only at nodes
Roots grow in response to -
correct answer ✅-resources in soil
-branch anywhere
Frits Went & James Bonner (Muller's response) -
correct answer ✅studied ambrosia (had undergrowth) and encelia
(no undergrowth) and hypothesized allelochemicals were
responsible
Muller found ambrosia had same effect as encelia on tomatoes
Thomas Chamberlain -
correct answer ✅proposed idea that scientists should not get too
attached to their own ideas
