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Angiosperm in Biological News

Fossil plants bring Wilf distinguished speaker honor

... Floras of Patagonia Rediscovered," "Insect-Damaged Fossil Leaves Show How food Webs Respond to Ancient Climate Change and Extinction" and "Fossil angiosperm Leaves: Paleobotany's Difficult Children Prove Themselves." ...

University of Florida study provides insight into evolution of first flowers

... The flower is one of the key innovations of evolution, responsible for a massive burst of evolution that has resulted in perhaps as many as 400,000 angiosperm species. Before flowering plants emerged, the seed-bearing plant world was dominated by gymnosperms, which have cone-like structures instead of ...

First draft of transgenic papaya genome yields many fruits

... make the plant resistant to the papaya ringspot virus. The findings appear as the cover article in the journal Nature. Papaya is now the fifth angiosperm (flowering plant) for which detailed genome information is available. The others are Arabidopsis (a well-studied member of the mustard family that ...

Massive duplication of genes may solve Darwin's 'abominable mystery' about flowering plants

... to show that such an event occurred early in angiosperm history, dePamphilis and his colleagues had to ... early in the lineage--with more recently derived angiosperm species, as well as with plant species outside ... duplication that was critical to the evolution of angiosperm flowers. A whole-genome duplication explains the ...
Angiosperm in Biological Definition

Leaf

... link Leaf structure A structurally complete leaf of an angiosperm consists of a petiole (leaf stem), a lamina (leaf blade), and ... . Conifer leaves are typically needle-, awl-, or scale-shaped angiosperm (flowering plant) leaves: the standard form includes stipules , petiole ...

Hermaphrodite

... However, this latter condition constitutes monoecy in plants, and is especially common to the conifers , while occurring in only about 7% of angiosperm species (Molnar, 2004). Etymology The term "hermaphrodite" derives from Hermaphroditus , the son of Hermes and Aphrodite in Greek ...

Plant

... in Glasgow , Scotland , the stumps of Lepidodendron trees are found in their original growth positions. The fossilized remains of conifer and angiosperm roots, stems and branches may be locally abundant in lake and inshore sedimentary rocks from the Mesozoic and Caenozoic eras. Sequoia and its ...

Plant

... in Glasgow , Scotland , the stumps of Lepidodendron trees are found in their original growth positions. The fossilized remains of conifer and angiosperm roots, stems and branches may be locally abundant in lake and inshore sedimentary rocks from the Mesozoic and Caenozoic eras. Sequoia and its ...
Angiosperm in Biological Dictionary

Gymnosperm

... Algae · Bryophyte · Pteridophyte · Gymnosperm · angiosperm ... Spermatophyta: Gymnosperm (Pinophyta, ... Algae · Bryophyte · Pteridophyte · Gymnosperm · angiosperm ... gymnosperm plants of the class ... Trees. Vegas vacation. Cancun hotel. Fern leaf. angiosperm ... Britannica online encyclopedia article on ...

Angiosperm

... Amborella not a "basal angiosperm " ... A theory of much earlier angiosperm origin and proliferation (360 mya) is ... a b c angiosperm Phylogeny Group (2003) ... any member of the ...

Synergid

... are discussed in the following places at Britannica. Assorted References angiosperm pollination ( in angiosperm (plant): Pollination ) The pollen tube ultimately enters an ovule ...

Stipule

... ... online encyclopedia article on stipule (plant), The basic angiosperm leaf ... Stipule ,biological,biology dictionary,biology ... Britannica online encyclopedia article on stipule (plant), The basic angiosperm leaf is composed of a leaf base, two stipules , a petiole, and a ...

Self-incompatibility

... systems ... The molecular bases of self - incompatibility in three angiosperm families—the ... In addition, self - incompatibility has been ... ... self - incompatibility ... of self - incompatibility in three angiosperm families—the Bras ... gametophytic self - incompatibility (GSI) was ...

Secondary metabolite

... the following places at Britannica. Assorted References angiosperms ( in angiosperm (plant): Contribution to food chain ) Another aspect of angiosperm diversity is found in the production of secondary compounds, such as ...

Parenchyma cells

... are discussed in the following places at Britannica. Assorted References angiosperm development ( in angiosperm (plant): Ground tissue; ... layer within the epidermis of the ...

Embryo sac

... are discussed in the following places at Britannica. Assorted References angiosperm development ( in angiosperm (plant): General characteristics; The female gametophyte of angiosperms ...

Daughter Cell

... are discussed in the following places at Britannica. Assorted References angiosperm development ( in angiosperm (plant): Vegetative structures ) After a cell in an apical meristem ...

Seed plant

... of gymnosperm and ... Cycads, like all seed plants , are also heterosporous, unlike the ferns which are ... The is not a unique angiosperm condition, but occurs in all seed plants as well. ... seed plant n. A seed ... Seed plants also differ from ferns in having ...

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