BISC 101 Lecture Notes - Lecture 8: Sieve Tube Element, Phloem, Ground Tissue

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

Document Summary

Plants: eukaryotic autotrophs, embryophytes(multicellular embryo depends of female parent cell. With true alternation of generations, phenotypic plasticity(change shape b/c of environment),specific morphology. Make their own food(cid:1372)photosynthesis, make oxygen, give. Heterotrophic plants cannot make their own food. 3 multiples of petals multiples of petals. There are two worlds of plants: above ground and belowground. hormone synthesis. modified. Function: anchor plants, absorb h2o/nutrients, store sugar, transport. Leaves: diverse and exhibit phenotypic plasticity. function in photosynthesis, Function: photosynthesis(cid:1372)green parts, transportation, reproduction, gas exchange(cid:1372)co2&o2, transpiration(cid:1372)h2o evaporation, modified. Root system: below ground, taproot(cid:1372)vertical/fibrous(cid:1372)lateral, diverse produce hormones, interact with bacteria/fungi in soil (cid:1372)give nutrients, Modified roots: adventitious (cid:1372)og root die, knees it has waxy cuticles(cid:1372)prevents. H2o/minerals to get in, make hair-like extensions(cid:1372)manifold,(cid:1371)absorption sa(cid:1373)water plants, cork cells(cid:1372)thick,h2o proof,dead@maturity,form protective layer under & Unspecialized(cid:1372)special conditions= divide into other plant cells-repair b/c differentiation(cid:1372)cannot grow, primary support source. Sclerenchyma:dead,thick rigid secondary wall with lignin(stiffening substance) wall between primary and plasma membrane, die after. Ground tissue: bulk of young plant- parenchyma,collenchyma, sclerenchyma.