petal
one of the inner whorls of a flower, usually colored; all petals taken collectively from a corolla
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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petal -- One of the outer appendages of a flower, located between the outer sepals and the stamens. Petals often display bright colors that serve to attract pollinators. More info?
petals Usually brightly colored elements of a þower that may produce fragrant oils; nonreproductive structures that attract pollinators.
Petals the second layer of flower parts; in insect-pollinated flowers these are frequently enlarged and brightly-colored
(petal = a leaf‚ spread out‚ flat) ...
petaloid A modified, flattened filament of a stamen that may resemble a petal.
petaloids Describes flowerlike arrangement of respiratory podia in irregular sea urchins.
petiole A stalklike portion of a leaf connecting the blade to the stem or branch.
Centripetal
Moving or tending to move towards a centre (opposite of centrifugal) ...
The sensory nerves, called also centripetal or afferent nerves, transmit to the nervous centers impressions made upon the peripheral extremities of the nerves, and in this way the mind, through the medium of the brain, ...
Plants with wind pollinated flowers tend to have flowers without petals or sepals. Typically large amounts of pollen are produced and pollination often occurs early in the growing season before leaves can interfere with the dispersal of the pollen.
Another difference is in the multiples of the petals of their flowers. Dicot petals usually occur in fours, fives or some multiple thereof, while monocot petals occur in threes or multiples of threes.
At first glance, the petal of a flower or the skin on the back of a human hand may seem smooth and seamless, as if they were composed of a single, indistinct substance.
If the plant that develops doesn't have any petals, it means the gene they cut out is important for making flowers. If the plant ends up with too many petals, it means the gene is important for stopping petal growth.
Thus, homozygosity or heterozygosity for the dominant allele result in the same genotype in complete dominance (if red is dominant over white, the petals of a flower heterozygous for red and white would be red).
sepals Modified leaves that protect a flower's inner petals and reproductive structures. Small, leaf-like structures in flowers that enclose and protect the developing flower.
For example, a single mutation altering flower color or petal shape could immediately prevent cross-pollination between the new and the parental types (a form of prezygotic isolating mechanism).
Reunion ...
For example, in one class of mutations, sepals develop where petals should and carpals develop where stamens should.
Many plants have specialized versions, but the basics are there. One specialization might be the petals of a flower. Those flower petals are specialized leaves that surround the reproductive structures of the plant.
auricle. A small earlike projection from the base of a leaf or petal.
available water. The amount of water held in the soil that can be extracted by plants.
awn. A slender bristlelike organ usually at the apex of a plant structure.
The reproductive structure of angiosperms; a complete flower includes sepals, petals, stamens (male structures), and carpels (female structures).
fluid-feeder
An animal that lives by sucking nutrient-rich fluids from another living organism.
ANTHER: Each typical flower has six stamens attached at the base of the petals. ... of two parts, a stalk (filament), and a two-lobed pollen sac called the anther. ...
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Flowers evolved to facilitate animal, especially insect, based pollen dispersal. Petals are modified leaves. Angiosperms currently dominate the flora of the world -- over three fourths of all living plants are angiosperms.
 See also: Flower, Plant, Trans, Cells, Organ
  
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