A textbook of general botany by Gilbert Morgan Smith; et al PDF

By Gilbert Morgan Smith; et al

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In the chloroplast (i), chlorophylls and accessory pigments are located in the thylakoids (j), where the light reaction takes place. Dark reactions take place in the stroma (k) of the chloroplast (see 3). Environmental Regulation of Photosynthesis Photosynthetic rate is regulated by the intensity of light, daylength, amounts of carbon dioxide and oxygen in the air (or water for water plants), temperature, and the level of air pollution. COLOR CODE green: gray: blue: orange: colorless: 24 light reaction (a), leaf (c), guard cells (e), palisade cells (h) with chloroplasts (i), thylakoid (j) dark reaction (b), stroma (k) water (xylem) in vein (d) sugars (phloem) in vein (d) epidermis (f), spongy cells (g) carbon dioxide + water light chlorophyll sugar + oxygen + water General Equation of Photosynthesis light reaction a light chlorophyll chemical energy reducing power to drive reaction sugars Photosynthetic Reactions in Chloroplast b dark reaction c Site of Photosynthesis in Leaf H20 & nutrients from soil leaf tissues chloroplast Leaf - Nutrient Deficiency Symptoms The essential elements required for the healthy growth of higher plants are carbon, hydrogen, oxygen, and those listed below.

A locule (m) is the chamber or space within a carpel. All of the pistils within a flower are called, collectively, the gynoecium (= female household). Tepals. When the calyx and corolla look alike and are Number of Parts Sepals. The outermost whorl of floral parts are leaf-like structures called sepals (c). While usually green, they may be colored in some species (see 129, 130). Sepals protect the developing flower in the bud stage. All of the sepals, collectively, make up the calyx. Petals. The second whorl of floral appendages are pet- petal-like, they are called tepals (see 126, 128).

Furthermore, by grafting a branch from a cocklebur plant given short days onto a cocklebur plant given long days, flowering is induced in the stems given long days. Short-day Plants Long-day Plants It has been found that rather than the length of daylight time, it is actually the length of the dark period (night length time) that induces flowering in short-day plants. If poinsettias are briefly illuminated during their longnight period,' the flowering response is not induced. Short-day plants grow vegetatively (a) during long-day periods and flower (b) during short-day periods.

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A textbook of general botany by Gilbert Morgan Smith; et al


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