Unit 5 Flashcards
(26 cards)
What are the two embryonic stages of plants
- Morphogenesis - creation of form
2. Organogenesis - creation of organs/organ systems
What cell types make up the protoderm
Epidermis (outer layer)
Trichomes (hairs)
Gaurd cells (surround the stoma)
Shoot or Root
Initial morphogenetic zones apparent
Shoot
List Raunkiaers life forms
- Phanerophyte
- Chamaephyte
- Hemicryptophyte
- Geophyte
- Helophyte
- Hydrophyte
What cell types make up the ground tissue (ground meristem)
Parenchyma (soft tissue found in bark and pith)
Collenchyma (supporting tissue of young shoots with thick cell walls)
Sclerenchyma (support cells that are dead; red)
Similar morphologies can produce nearly identical morphologies in distantly related lineages is an example of…
Convergent evolution
What cells types make up the procambium
Vessel elements Tracheids Sieve cells Sieve tube members Companion cells
Arrangement of vascular tissue in the primary plant body
Stellar anatomy
Shoot or Root
Initial morphogenetic zones not apparent
Root
Responsible for primary growth (herbaciousness)
Apical meristem
Shoot or Root
Positive geotropic growth
Root
What three tissue types make up the apical meristem
Protoderm
Ground meristem
Procambium
Differentiate between fibrous root systems and deep root systems
Fibrous root systems are highly branched and not deep or thick
Taproot systems are deeper thicker roots
Shoot or Root
Negative geotropic growth
Shoot
What are the three types of leaf insertion
Alternate - 1 leaf/node
Opposite - 2 leaves/node
Whirled - 3 or more leaves/node
Shoot or Root
Tunica/corpus organization present
Shoot
The plant body is divided into what 2 parts
Vegetative and reproductive
Responsible for secondary growth (woodiness)
Lateral meristem
What protects the shoot apical meristem
Bud scales
What protects the root apical meristem
Root cap
What are the general characteristics of plant growth
Indeterminant
Continually “embryonic”
Modular development
List in order from ancestral to most derived
Siphonostele
Prostele
Eustele
Prostele—->Siphonostele—->Eustele
Shoot or Root
Branches arise exogenously
Shoot
Location from which new roots arise, located just below the endodermis
Pericycle
