By Michael Anderson
The existence cycle of a plant will be really awesome to watch, and the strength of vegetation may be actually mystifying; reflect on how sure environments are inhospitable to lifestyles, but theyre sprinkled with numerous types of plants. Plant replica can happen asexually or sexually; the strategy of replica units the degree for the vegetation development and adulthood. This flourishing quantity examines the tactics of plant copy and the phases of flora, whereas additionally spotlighting the function of vegetation in a variety of ecological settings.
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Extra resources for A Closer Look at Plant Reproduction, Growth, and Ecology (Introduction to Biology)
Some plants produce roots that invade the tissues of a host plant. Parasites such as mistletoe, which are capable of photosynthesis, obtain only water and minerals from their host. Others, like the Indian pipe and pine drops, produce no chlorophyll and depend entirely on food drawn from their host. Some plants compete by producing chemicals that are toxic to other plants. For example, very few plants can grow beneath a walnut tree, because organic chemicals produced by the tree prevent or stunt the growth Not all interactions between plants are destructive.
34 PlAnt Growth And develoPMent Diagram of photosynthesis showing how green plants capture sunlight and use it to transform water and carbon dioxide into oxygen and sugars. Encyclopædia Britannica, Inc. 35 A closer look At PlAnt reProductIon, Growth, And ecoloGy Light energy is initially trapped by one of several chlorophyll pigments. Chlorophyll a is the most abundant of these pigments. Chlorophyll b is also found in most green tissues. Carbon dioxide from the air enters the leaf through the stomata.
The glucose is thus turned back into the same two substances from which it was made during photosynthesis, and the carbon dioxide and water vapor are released back into the air through the stomata. During the daytime, photosynthesis proceeds more rapidly than does respiration. As a result, plants release more oxygen than carbon dioxide and water vapor. At night, when photosynthesis stops (because of the absence of light), only oxygen is taken in, and carbon dioxide is given off as a waste product.
A Closer Look at Plant Reproduction, Growth, and Ecology (Introduction to Biology) by Michael Anderson