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词汇 angiosperms
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Examples of angiosperms


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The macroscopic forms of aquatic vegetation denoted as aquatic macrophytes include macroalgae, some species of ferns and angiosperms inhabiting a wetland.
Environmental triggers of fertility are discussed and phenological patterns are compared with ferns and angiosperms from other habitats.
This contrasts with most other multicellular plant systems, including the angiosperms, where fertilisation occurs deep within the maternal tissue.
In seed heterogeneity, described in more than 200 species of angiosperms, single individual plants produce seeds differing in their external appearance.
The great majority of whiteflies in existence today colonize only dicotyledonous angiosperms and a smaller, but significant, number feed on monocots, particularly grasses and palms.
The isolation of egg cells is difficult in angiosperms because the egg cell is deeply embedded within the ovule.
It has also been illustrated that for all but a few species, angiosperms are the principal host of these two arthropod groups.
However, there is little or no published information on toxicity of such species to terrestrial or aquatic angiosperms.
On the 10 smaller islands, a total of 22 species of angiosperms were found, of which only four had coverage higher than 10%.
The majority of angiosperms, however, possess bicellular pollen grains in which pollen contains the precursor generative cell.
Evolution of the angiosperms : calibrating the family tree.
A total of 40 species were present on the islands, 35 of which were angiosperms.
Morphological adaptations to drought in seedlings of deciduous angiosperms.
Nevertheless, transitions to selfing are common across angiosperms, which suggests that the potentially negative consequences of reduced heterozygosity and genetic diversity are balanced by other factors, such as reproductive assurance.
In addition to the testa, the covering layers of endospermic seeds include the endosperm, which is usually triploid in angiosperms, with two-thirds of its genome of maternal origin.
While all vegetative tissues show components of both mechanisms, repair is more developed in the less complex groups of plants, and protection is the dominant process in the resurrection angiosperms.
Ballooning larvae appear to feed on a wide variety of plants, mostly angiosperms, but not exclusively so.


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