23.2 - Root Functions 1. --- 2. --- 3. --- 4. ---
23.2 - Root Functions 1.--- 2.--- 3.--- 4.---. ROOTS - types 1.Two types a.-- i.-- ii.Dandelions iii.Carrots, Radishes b.-- i.-- ii.Grass, Green Onions.
Jan 02, 2016
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23.2 - Root Functions
1. ---
2. ---
3. ---
4. ---
ROOTS - types1. Two types
a. --i. --
ii. Dandelions
iii. Carrots, Radishes
b. --i. --
ii. Grass, Green Onions
ROOTS – Parts of roots1. ---
a. ---
b. Root hairs attached where water enters
2. Cortexa. Spongy layer of ground tissue
3. Endodermisa. Encloses vascular cylinder
4. ---a. ---
5. --a. ---
6. ---a. ---
STEMS - TypesTypes of Stems
1. --- stems
2. --- stems
3. --- Stemsa. Rhizomes – iris
b. ---
c. Bulbs – tulip
d. Corms - crocus
Growth of Stems1. ---
a. ---b. Only at ends of plant
2. ---a. ---b. Vascular cambium increases
thickness
23.2 - Leaf Functions
Functions
1. ---a. --- in leaf
2. ---a. ---
3. ---a. --- just enough to allow gas
exchange to take place during photosynthesis
LEAVES - PartsStructures1. Blade
a. Collects sunlight
2. Petiolea. Leaf to stem
3. Epidermisa. Cover top and bottom of leaf
4. ---a. ---
5. ---a. Just under epidermisb. Most chloroplasts herec. Absorb lightd. ---
LEAVES - Parts
Structures (continued)
1. ---a. Beneath palisadeb. Airy spacesc. ---
2. ---a. ---b. Veins of leaf
3. ---a. ---
4. ---a. ---
Leaf Adaptations1. Desert Plants
a. ---
b. ---
c. ---
d. cactus
2. Pitcher Plantsa. ---
b. Live in poor soil areas
24.2 - Flowers4 Organs1. ---
2. ---
3. --- gametes forma. Filament-long, thin
stalk
b. ---
4. --- gametes forma. ---
b. --- -stalk
c. ----pollen grains land
Flowers
2 Types of Flowers
1. ---a. ---
2. ---a. ---
Fruits
1. ---
2. ---
Photoperiodism1. Length of daylight and darkness
each day affects plant growth and timing of reproduction
2. Critical perioda. Each plant species has specific daylight-
darkness conditions that will make flowering start
3. ---a. ---- number of daylight hours is shorterb. --- - number of daylight hours longerc. --- – ranged. --- - will not flower if days are longer or
shorter than its critical period
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