Brooks Biodiversity Unit 3 Exam UPDATED ACTUAL Exam Questions and CORRECT Answers
21 keer bekeken 1 keer verkocht
Vak
Brooks
Instelling
Brooks
Brooks Biodiversity Unit 3 Exam
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Plants Architecture - CORRECT ANSWER- Plant needs
i. collection & conversion of solar energy -> leaves
ii. positioning & support of leaves -> stems
iii. anchorage & absorption -> roots
iv. transport ...
Brooks Biodiversity Unit 3 Exam
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Plants Architecture - CORRECT ANSWER✔✔- Plant needs
i. collection & conversion of solar energy -> leaves
ii. positioning & support of leaves -> stems
iii. anchorage & absorption -> roots
iv. transport -> vascular system
Epidermis - CORRECT ANSWER✔✔- outermost cell layer of a plant body
cutin: (wax) excreted by epidermis
Cuticle - CORRECT ANSWER✔✔- Waxy waterproof covering of a plant.
Produced by the epidermis and has wax to resist desiccation.
Guard Cells - CORRECT ANSWER✔✔- Responsible for opening and closing stomata.
Works together with stomata to regulate gas exchange.
Prevents movement of water ACROSS surface
Stomata - CORRECT ANSWER✔✔- Small openings on the underside of a leaf through
which oxygen and carbon dioxide can move.
Mostly on lower surfaces, sometimes on upper surfaces. Found on both surfaces.
Allows for gas exchange.
Parenchyma - CORRECT ANSWER✔✔- Ground tissue that forms the bulk of the mesophyll
Can be modified into collenchyma and sclerenchyma
Thin and flexible cells
Most common and versatile ground tissue
Used for metabolic functions and storage of organic products
Palisade & Spongy layers - CORRECT ANSWER✔✔- Palisade layer: where light dependent
reactions occur, near the surface. Top part of the mesophyll in dicot plants.
Spongy mesophyll or spongy parenchyma: soft lower layer. Has access to CO2 through
stomata. Kelvin Cycle: where carbon fixation occurs, converting nonorganic CO2 into sugars.
Vein (Vascular bundle) - CORRECT ANSWER✔✔- Transports materials throughout the leaf
and contains the xylem and phloem.
Separating the VB = damage.
Xylem - CORRECT ANSWER✔✔- (Xylem Up)
Distributes water from roots throughout
Aimed towards stem
, Red
Tells age of tree
Contains: tracheids & vessel members
Tracheids - CORRECT ANSWER✔✔- Thin, hollow, narrow tube, dead cells with
perforated, tapered ends.
Vestigial structure
First kind of tube made
Present in early vascular plants and present in angiosperms and gymnosperms (slow flow)
Vessel Members - CORRECT ANSWER✔✔- Thick, hollow, wide tube, dead cells with large
holes on end.
Clearly visible
Phloem - CORRECT ANSWER✔✔- (Phloem Down)
Distributes the products of photosynthesis (sugary water) to plants tissues.
Blue
Contains: Sieve tube members (element) & Companion cells
Sieve Tube Members - CORRECT ANSWER✔✔- hollow, living cells with perforated cells
Companion Cells - CORRECT ANSWER✔✔- living cells that help keep sieve tube member
cells alive.
Production of sugars in Kelvin Cycle require transportation done by companion cells into
phloem
Which 4 cell types is most active metabolically when fully functional? - CORRECT
ANSWER✔✔- companion cells
Epidermis in Trees - CORRECT ANSWER✔✔- is replaced by bark or cork. Produced by the
cork cambium (tissues that produce other tissues).
Cork (dead) = phloem (alive)
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
√ Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, Bancontact of creditcard voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper MGRADES. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €9,54. Je zit daarna nergens aan vast.
