Resultado da Busca
Plantae (também conhecido por reino vegetal, Metaphyta ou Vegetabilia) [ 2] é o reino da natureza que agrupa as plantas, em um vasto conjunto de organismos eucariotas multicelulares, sem motilidade e predominantemente autotróficos fotossintéticos, contendo células que em geral incluem um ou mais cloroplastos, organelos especializados na produção...
- Eukaryota
- Archaeplastida
- PlantaeHaeckel, 1866[1]
- Plantae, Haeckel, 1866
Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll.
- Diaphoretickes
- Plantae, H.F.Copel., 1956
- Types of Plants
- The Plant Food Factory
- Roots
- Flowering Plant Reproduction
- Fossils
- Related Pages
Green algae: 1. Chlorophyta 2. Charophyta Land plants (embryophyte) 1. Non-vascular plants (bryophytes): 1.1. Liverworts 1.2. Mosses 1.3. Hornworts 1.4. †Horneophytopsida 2. Vascular plants (tracheophytes) 2.1. Lycopodiophyta—clubmosses 2.2. Pteridophyta: the ferns 2.2.1. Pteridopsida: the typical ferns 2.2.2. Sphenopsida: the horsetails 2.2.3. Mar...
At least some plant cells contain photosynthetic organelles (plastids) which enable them to make food for themselves. With sunlight, water, and carbon dioxide, the plastids make sugars, the basic molecules needed by the plant. Free oxygen (O2) is produced as a by-product of photosynthesis. Later, in the cell cytoplasm, the sugars may be turned into...
The roots of plants perform two main functions. First, they anchor the plant to the ground. Second, they absorb water and various nutrients dissolved in water from the soil. Plants use the water to make food. The water also provides the plant with support. Plants that lack water become very limp and their stems cannot support their leaves. Plants w...
Flowers and pollination
Flowers are the reproductive organ only of flowering plants (Angiosperms). The petals of a flower are often brightly colored and scented to attract insects and other pollinators. The stamen is the male part of the plant. It is composed of the filament (a stalk) that holds the anther, which produces the pollen. Pollen is needed for plants to produce seeds. The carpel is the female part of the flower. The top part of the carpel contains the stigma. The style is the neck of the carpel. The ovary...
Seed travelers
A plant produces many spores or seeds. Lower plants such as moss and ferns produce spores. The seed plants are the Gymnospermsand Angiosperms. If all the seeds fell to the ground besides the plant, the area might become overcrowded. There might not be enough water and minerals for all the seeds. Seeds usually have some way to get to new places. Some seeds can be dispersed by the wind or by water. Seeds inside juicy fruits are dispersed after being eaten. Sometimes, seeds stick to animals and...
The question of the earliest plant fossils depends on what is meant by the word "plant". 1. If by plants we mean phototrophs using chlorophyll, then cyanobacteria in stromatolites are the first fossils, 3,450 million years ago (mya) in the Archaean eon. The remarkable precision is possible because the fossils were sandwiched between lava flows that...
- Plantae, sensu Copeland, 1956
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (/ ˌ æ n dʒ i ə ˈ s p ər m iː /), commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of broad-leaved trees , shrubs and vines , and most aquatic plants .
Plantas. O Commons possui uma categoria com imagens e outros ficheiros sobre Plantas. Categorias: Agricultura. Botânica. Eucariontes. Categoria oculta:
Plant anatomy or phytotomy is the general term for the study of the internal structure of plants. Originally, it included plant morphology, the description of the physical form and external structure of plants, but since the mid-20th century, plant anatomy has been considered a separate field referring only to internal plant structure.
Botany, also called plant science (or plant sciences), plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field.
