I Plants can reproduce sex-ually or asexually. When the crabgrass in your lawn sends out feelers that take root, it is reproduc-ing asexually. It does this in addition to-(and sometimes instead of) the more normal sexual reproduction that takes place through the use of seeds (see below). Bulbs, and rhi-zomes (underground stems, some-times called suckers) are other examples of asexual reproduction in plants. The practice of grafting (joining the branch of one plant to the stem of another) is an example of an artificially induced asexual means of reproduction.
The simplest form of asexual reproduction is practiced by single-celled plants like algae, which re-produce by ordinary cell division. An asexually reproduced plant is genetically identical to the parent plant, and is therefore a clone. Asexual reproduction proceeds more rapidly than sexual, but produces a population in which variation oc-curs only through mutations.
Alternation of generations AR is the most primitive form of sexual reproduction. Plants like ferns and mosses (as well as fungi) use a reproductive technique
ANATOMY OF A FLOWER
sepal The stamen is the male organ of the plant. It pro-duces pollen grains, which carry the sperm. The stamen in a flower is a long, fuzzy-looking stalk sticking up around the center. The “fuzz” is the pollen.
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