Search results
Results From The WOW.Com Content Network
Many flowers, for example, attract only one specific species of insect and therefore rely on that insect for successful reproduction. This close relationship is an example of coevolution, as the flower and pollinator have developed together over a long period to match each other's needs.
This article lists the living orders of the Viridiplantae, based primarily on the work of Ruggiero et al. 2015. [1] Living order of Lycophytes and ferns are taken from Christenhusz et al. 2011b [2] and Pteridophyte Phylogeny Group. [3]
In some flowers, a tube or cup-like hypanthium (floral tube) is formed above or around the ovary and bears the sepals, petals, and stamens. There may also be a nectary producing nectar. Nectaries may develop on or in the perianth, receptacle, androecium (stamens), or gynoecium. In some flowers nectar may be produced on nectariferous disks.
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 /). [5] [6] The term 'angiosperm' is derived from the Greek words ἀγγεῖον / angeion ('container, vessel') and σπέρμα / sperma ('seed'), meaning that the seeds are enclosed within a fruit.
Each flower is bisexual, having both stamens and carpels. They have radial symmetry; the petals can be separate or partially or fully fused together to form a tube-shaped corolla that opens up at the mouth to form a bell-like shape (as in item 8 in the figure) or a flat-faced flower. In most of the families of Ericales, stamens alternate with ...
Illustration of leaf and flower morphology for Ophrys apifera (left) and Ophrys fuciflora (right) Ophrys apifera grows to a height of 15–50 centimetres (6–20 in). This hardy orchid develops small rosettes of leaves in autumn that continue to grow slowly during winter. Basal leaves are ovate or oblong-lanceolate, and upper leaves and bracts ...
Grevillea (/ ɡ r ɪ ˈ v ɪ l i ə /), [2] commonly known as spider flowers, [3] is a genus of about 360 species of evergreen flowering plants in the family Proteaceae.Plants in the genus Grevillea are shrubs, rarely trees, with the leaves arranged alternately along the branches, the flowers zygomorphic, arranged in racemes at the ends of branchlets, and the fruit a follicle that splits down ...
As an example, Lophocereus schottii is pollinated by a particular species of moth, Upiga virescens, which also lays its eggs among the developing seeds its caterpillars later consume. [54] The flowers of this cactus are funnel-shaped, white to deep pink, up to 4 cm (1.6 in) long, and open at night. [55]