2. A.P. Topics…let’s take Latin 5! How does photosynthesis convert light energy into chemical energy? How are the chemical products of the light- trapping reactions coupled to the synthesis of carbohydrates? What kinds of photosynthetic adaptations have evolved in response to different environmental conditions? What interactions exist between photosynthesis and cellular respiration?

3. How has the terrestrial environment influenced plants? Limiting factors… Water (humidity) Light Soil Nutrients: nitrogen, phosphorus, potassium, other minerals Wind Competition Cooperation…symbiosis

4. What is the basic anatomy of a plant? Waxy Cuticle Jacketed Gamantia Roots Stems Leaves

5. Plants Bryophyte:nonvasular spore producer, dominant haploid gametophyte and reduced diploid sporophyte. Needs water to reproduce Pterophyte: vascular spore producer, reduced haploid, dominant sporopyte…sporangium on fronds Gymnosperms: pollen is male gametophyte and ovule is female gametophyte. Food produced first, then baby Angiosperm: double fertilization, stamen and carpals (pistal)

6. Angiosperms: Monocots vs. Dicots Monocots: fibrous root system, one cotyledon, parallel veins, scattered vascular bundles in stems, floral parts in 3’s Dicots: taproots, two cotyledons, netlike veins, vascular bundles in stems, floral parts in 4’s and 5’s.

7. Roots Function? Root hairs Some have advantageous roots, ie. Mangroves, corn.

8. Stems Function? Alternating nodes…point where leaves attach Auxiliary buds Terminal bud…apical dominance Modified stems: tubers, rhizomes, stolons (runners), bulbs

9. Leaves Function? Blade Petiole Simple, compound, doubly compound Some adaptations: tendrils, spines (stems do photo), succulents store water, colorful leaves to attract insects

10. Tissues of plants Dermal Vascular –Xylem: tracheids and vessel elements –Phloem: sieve-tube members and companion cells Ground -pith, cortex

11. How did terrestrial plants evolve and how do their reproduce? Life cycles