1. Plant Growth & Adaptations

2. Plant Nourishment Photosynthesis Requirements Water Carbon dioxide
Sunlight

3. Plant Nourishment Macronutrients Nitrogen
Overall growth & chlorophyll structure.
Phosphorous
Root & flower growth.
Potassium
Root preservation; disease prevention; quality of fruit.
Calcium
Cell wall; overall strength of plant.
Magnesium
Chlorophyll structure.

4. Plant Nourishment Micronutrients Iron Zinc Copper
Chlorophyll structure.
Zinc
Regulation of plant growth.
Copper
Reproduction; root metabolism.

5. Fertilizers Organic Fertilizers Sheep and cow manure.
Mulch and compost.
Non-Organic Fertilizers
Three numbers (e.g., ).
– Nitrogen-Phosphorous-Potassium
What time of the year should “6-6-24” fertilizer be used?
hint: N- overall growth, P- root, flower growth,
K – root preservation, disease prevention, fruit quality

6. Seed Germination When conditions are right…
Gibberellin (hormone) is released.
Enzymes break down starch.
Creates hypertonic condition → water rushes in.
Seed coat bursts.
Cellular respiration begins.

7. Seed Germination Radicle pushes down to form roots.
Hypocotyl pushes up to form stem.
Epicotyl & cotyledon grows upward to
form leaves.

8. Seed Germination

9. Seed Studies The Doomsday Vault NASA
- For safekeeping of the World’s vegetation.
sending seeds into space.
Applications???
CBC Doomsday Vault Tour

10. Plant Adaptations Desert Wetlands Fire-prone areas Extreme cold
Nutrient-poor soil
Shade
Homework: Videos of adaptation

11. Desert Modified leaves Photosynthetic stems. Extensive root system.
Thin.
Thick cuticle.
Photosynthetic stems.
Extensive root system.
Rapid development during rainy season.

12. Wetlands Floating leaves. Stomata on upper epidermis.
Hollow stem for buoyancy and diffusion of gases.
Floating seeds.

13. Fire-prone Areas Ashes neutralize acidic soils.
Extreme heat opens tough seed coats.
Few competitors.

14. Extreme Cold Longer dormant period. Deciduous trees lose leaves.
Flowers act as solar collectors.
– Concentrates solar rays on ovary…speeds up reproduction.

15. Nutrient-poor Soil Carnivorous. Capture, kill and digest insects.
Acquire N, P and K.
E.g., Venus fly trap, pitcher plant.
Parasitic.
Absorb water, minerals and sugars from xylem and phloem.
E.g., Mistletoe.

16. Shade
Bloom early.
Rapid growth.

17. Investigate some plants and suggest how it adapts to the specific environment
Click the link