BISC 101 Chapter Notes - Chapter 36: Cuticle, Taproot, Xylem
26 Oct 2017
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Suggest a hypothesis to explain why the shoot and root system of different species are so variable in size and shape. Reproductive shoot sbear flowers sexual reproduction. Absorb h2o & nutrients from soil w root hairs. Also allows many plants of different species to survive in the same enviro w/o too much competition plasticity: explain why continuous growth enhances the phenomenon known as phenotypic. Cactus leaves are modified tough skin = protection from predators. Lowers amount of h2o lost due to evaporation. Thicker cuticle in plants from dry habitats b/c they need to preserve water more due to less water available in the roots. Increased amount of stoma for increased gas exchange: compare and contrast the roles of parenchyma cells in the ground tissue system versus the vascular tissue system. In rays conduct h2o & solutes across stem. Differentiate into sieve tube & companion cells in phloem: describe how the vascular cambium produces secondary xylem and secondary.
