BIO203H5 Chapter Notes - Chapter 36: Herbaceous Plant, Root Cap, Meristem

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blackmuskrat584

6 Dec 2011

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Water transported up, sugars transported in both directions. Herbaceous plant: lacks wood and short lived stem. Lateral roots: more horizontal and stems from taproot. Not unusual for roots to account for over 80% of a plant"s weight. Perennial: root system that lives for many years. Phenotypic plasticity: same genotype can result in multiple phenotypes. Roots grow to soils with new nutrients because old soil has no more nutrients. Adventitious root: roots that develop from the shoot system instead of root system. Axillary buds: where nodes attach to stem, may develop into branch or flower. Apical bud: tip of stem and branch that grows, may develop into flower. Variations in size and shape is important in light gathering systems. Stolon modified stems run over soil surface, produce leaf at each node

Related Questions

1. In order for blood to always flow unidirectionally through a closed circulatory system, the ________.

a. capillaries must have a thick endothelium

b. arteries must be elastic

c.pressure in all vessels must be equal

d.blood vessels farthest from the heart must have valves

2. Which one of the following does not correctly match the form with its function?

a. roots: water and minerals in the soil are absorbed

b. phloem sap: products of photosynthesis are transported from roots to shoots

c. leaves: sugars are produced by photosynthesis

d. xylem sap: water and minerals are transported from shoots to roots

3. If you place flaccid plant cells in pure water, water ________ into cell because it has ________.

a. does not enter the cell; solutes and low water potential

b. enter the cell; solutes and high water potential

c. enter the cell; solutes and low water potential

d. does not enter the cell; solutes and high water potential

blackdog532

Why does trimming the top of a plant make the plant bushier?Trimming damages or removes the apical meristem which activates theaxillary meristems to grow. Trimming disrupts vertical transportroutes for water and nutrients while enhancing horizontal transportroutes. Trimming forces leaves around the vicinity of the cuts tobecome reproductive leaves. Trimming stimulates the cork cambium toproduce more secondary growth. Trimming stimulates the plant toproduce more rhizomes which results in more branches.