Exam (elaborations)
2024 BIOLOGY 1108 EXAM 2 WITH CORRECT ANSWERS
- Course
- Institution
2024 BIOLOGY 1108 EXAM 2 WITH CORRECT ANSWERS
[Show more]
Content preview
2024 BIOLOGY 1108 EXAM 2WITH CORRECT ANSWERS
Fall wood xylem - CORRECT ANSWERS-*smaller diameter
*very thick walls
*more support
Dendrochronology - CORRECT ANSWERS-Study of tree ring growth patterns
Sap wood - CORRECT ANSWERS-*youngest 2° xylem layers
*active in transport
Heartwood xylem - CORRECT ANSWERS-*oldest 2° xylem layers
*not active in transport
*darker due to resins and other compounds that protect against fungi and
wood boring insects
Secondary dermal tissue - CORRECT ANSWERS-Cork cambium
Cork cambium: formation - CORRECT ANSWERS-Forms from parenchyma in
cortex
Uses of cork - CORRECT ANSWERS-*wine bottles
*cork boards
Uses of xylem - CORRECT ANSWERS-*rosewood guitar
*oak flooring in house
*redwood deck
Essence of plantness - CORRECT ANSWERS-*photosynthesis/chloroplasts
*root structure: help it stand up, get nutrients, filter water, keep them in
place
*branching/growing outward to get sunlight, water, and nutrients
Kingdom Plantae (and some protists: algae) - CORRECT ANSWERS-
*multicellular eukaryotes
*photosynthetic autotrophs
*cell walls composed of cellulose
*pigments: chl a, chl b, and carotenoids (help capture sunlight)
, Charophytes (green algae) - CORRECT ANSWERS-Sister species with land
plants
Plants and charophytes (shared traits) - CORRECT ANSWERS-*rosette shaped
cellulose synthase complexes
*enzymes in peroxisome
*formation of phragmoplast
*similarity in genetic code of nucleus and chloroplasts
*flagellated sperm structure
Cell wall - CORRECT ANSWERS-Thick, inflexible, strong, waterproof
*cellulose fibrils
*other biomolecules (pectins, hemicellulose, lignin, etc)
Challenge: water supply, dessication - CORRECT ANSWERS-Solution:
*vacuoles (store water)
*stomata (regulate water loss
*root system (more complex)
Challenge: gravity - CORRECT ANSWERS-Solution: cellulose, vascular tissue,
cell wall
Challenge: too much sunlight - CORRECT ANSWERS-Solution: Evaporative
cooling
Challenge: photosynthesis on land - CORRECT ANSWERS-Solution: Pigment
type
Challenge: fertilization and dispersal - CORRECT ANSWERS-Solution:
*flagellated sperm (need water)
*seeds (protective covering)
Natural selection requirements - CORRECT ANSWERS-1. Variation in traits
(individually)
2. Heritability
3. Reproduction
4. Differential survival and reproduction
Four key traits that appear in nearly all land plants but are ABSENT in
charophytes - CORRECT ANSWERS-1. Alternation of generations
2. Apical meristems
3. Walled spores in sporangia
4. Multicellular gametangia
**most plants secrete a cuticle**
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Elitaa. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.09. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81113 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now