BISC 101 Lecture Notes - Lecture 11: Secondary Growth, Phloem, Vascular Tissue

• School: Simon Fraser University
• Department: Biological Sciences
• Course: BISC 101
• Professor: Megan Barker

Document Summary

System of plant: cell to tissue to organ to organ system to organism. Root system: anchor plant/absorb water and nutrients (n/p/k) from soil/transport water and food/storage/response/reproduction. Shoot system: harvest light/co2 to produce sugars (photosynthesis)/reproduction/transport food and water/defence/gas exchange/ storage adding more parts not increasing size) Apical bud: tip of each stem/branch (extends length of stem/branch) Leaves: appendage that projects stem laterally (photosynthetic organs) Axillary (or lateral) bud: nodes where branch attach to stem. Branch: lateral extension of shoot system (grew from axillary bud) Plant body is more efficient as an absorbance/synthesis machine when it has a large surface area to volume ratio (flattened surface is the best) The same species can have different morphology, depending on its environment. Color, shape (when the leaves fall or stay) Cell wall: cellulose rich wall that supports cell. Cytoplasm of adjacent cells connected by the plasmodesmata (has cytoplasm/segments of endoplasmic reticulum (smooth er) and run through rint membrane-lined gaps in cell wall)