Although the characteristics of different plant seeds vary greatly, some structural features are common to all seeds. Each seed contains an embryo with one, two, or several cotyledons. In angiosperm seeds, the embryo may have either one or two cotyledons. Angiosperms with one cotyledon are plants are called monocots, those with two cotyledons are called […]
The range of seed size is extreme more than nine orders of magnitude. The largest known seed is that of the double coconut (Lodoicea maldivica); the seed and fruit together weigh as much as 27 kilograms. At the other end of the scale, the dustlike seeds of some orchids, begonias, and rushes weigh only about […]
Seeds are adapted for conditions other than geographic dispersal. When a seed arrives at its destination after dispersal, conditions may not be suitable for establishment of the plant. The delaying mechanism which prevents germination under adverse conditions is called dormancy. Seeds can remain in a condition of dormancy for varying lengths of time, depending on […]
Fruits can be classified, based on the nature of the pericarp, into two groups: fleshy and dry. Fleshy fruits, in turn, are classified into several types, including drupes, berries, pomes, hesperidia, and pepos. Dry fruits are also subdivided into several categories, including follicles, legumes, capsules, achenes, nuts, samaras, schizocarps, and caryopses. The three most familiar […]
Many plant species produce flowers that deviate from the idealized format. Certain lilies, for example, do not have sepals and petals that are clearly distinguishable from each other. In magnolias and some water lilies, each flower produces perianth parts that intergrade from a sepal-like form toward the outside to a petallike form toward the inside. […]
The Japanese garden became the favourite style of a small garden. It is not casual: the Japanese garden is insignificant, but its image is not settled by the dramatized tiny garden with small lamps, bridges and umbrellas. Every detail of a garden in Japan has a difficult inner meaning, and plants are specific only for […]
The basic characteristic feature of such construction is its naturalness. The garden pond can have any sizes, but its form should be as smoother as possible. And the smaller the pond is the less bends it should have. If you already have such a reservoir at your site, but you think that its form is […]
How the perception of light by phytochrome is linked to the production of gibberellin and anthesin in longday and short-day plants is not clear. One idea is that plants measure the amount of Pfr present. Flowering in short-day plants would be inhibited by Pfr, and these plants would not flower until very little or no […]
Type: Annual Flower Species: 40 Height: 1.5 Growing: Europe Flowers: Red Kingdom: Plantae Unranked: Angiosperms, Monocots, Commelinids Order: Poales Family: Bromeliaceae Genus: Hohenbergia Share in:
The epoch of French classicism in park art was marked by grandiose creations of Andre Lenotr. Before him the building of gardens was imitated to Italians. After creation of such remarkable creations like parks Tuileries, the Marlie, Saint-Cloud and especially Versailles all world has started to imitate his ideas. The ensembles of Lenotr created fine […]
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Type: Annual Flower, Perennial Flower Species: 500 Height: 5 – 20 Growing: New Zeland Flowers: Blue Kingdom: Plantae Unranked: Angiosperms, eudicots, Asterids Order: Lamiales Family: Plantaginaceae Genus: Veronica Share in:
Type: Annual and Perennial Species: 40 Height: 10-40 Growing: Africa, Asia, Australia Flowers: Yellow Kingdom: Plantae Unranked: Angiosperms, Eudicots, Rosids Order: Malvales Family: Malvaceae Genus: Abelmoschus
Food | AGRICULTURE: MARINE, Seaweeds
Seaweeds are edible, especially the red and brown algae. The three most common types of seaweeds are known by their Japanese names: nori (Porphyra), red seaweed high in vitamin С and digestible protein; kombu (Laminaria); and wakame (Undaria), high in calcium. They are eaten raw, cooked, or dried and have several vitamins and minerals as […]