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Angiosperm - Definition of Angiosperm at Dictionary.com a free online dictionary ... Angiosperm Information. Find Free Reference & Encyclopedia Articles Quickly. ...
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(Science: botany) a flowering, fruit-bearing plant or tree, the ovules (and therefore seeds) of these plants develop within an enclosed ovary. Plants having seeds in a closed ovary.Pertaining to plants that contain seeds enclosed in the [[ovary.

Angiosperms - Biology Encyclopedia forum
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plants with seeds enclosed by carpels, that is, ovaries; contrast to gymnosperm
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...

The Angiosperms
Easy Q&A Guide
Flowering Plants Review
1. What are angiosperms, the flowering plants? What is the main feature that distinguishes them from the gymnosperms?

We asked it before. What would give you an advantage if you were a plant? You have a vascular system to transport nutrients. You have seeds for reproduction that allow your babies to spread out in new areas. What next? Flowers! ...

~s are the flowering plants (today the most abundant and diverse plants on earth).
Most are terrestrial and all lack locomotion. This poses several problems.

~ gametophytes are the most reduced of all plants, consisting of only a few cells.
In ~s, the sporophyte produces a unique reproductive structure, the flower.

Transport in ~ophytes
9.2.1 Outline how the root system provides a large surface area for mineral ion and water uptake by means of branching and root hairs.

~: The most recently evolved and the largest group of plants whose reproductive organs are in their flowers (flowering plants). A superclass in the sperm plants (Spermatophyta) division belonging to the vascular plants (Tracheophyta) phylum of the plant kingdom.

~s - the Flowering Plants
Double fertilization.
Allows for diversification
Acts as a signal to produce food only when fertilized - no more baby food before the baby!
Pollen sperm with two nuclei - one for fertilization of egg, one for polar bodies
Much more rapid life cycle ...

~ae Subdivision of plants within Division Spermatophyta which produce flowers and bear seeds enclosed in an ovary
(angio = vessel‚ receptacle‚ container; sperma = seed) ...

~s Flowering plants. First appearing at least 110 million years ago from an unknown gymnosperm ancestor, flowering planbts have risen to dominance in most of the world's floras.

(an-jee-o-sperms) [Gk. angeion, vessel + sperma, seed]
A flowering plant, which forms seeds inside a protective chamber called an ovary.
anion ...

~s /ANJ-ee-Ũ-sperms/ Flowering plants; one of the major categories of the Plant Kingdom. Unlike gymnosperms, ~s form their seeds within protective capsules called ovaries. COMPARISON OF GYMNOSPERM WITH ~ ...

~ Seeds
The seeds of ~s are somewhat different from those of gymnosperms (see Plant Classification, ~s.

[edit] ~s
It is thought that flowering plants evolved from a common hermaphrodite ancestor, and that dioecy evolved from hermaphroditism.

- ~s are flowering plants that produce seeds enclosed in fruit. They are the dominant type of plant today; there are over 250,000 species. Their flowers are used in reproduction. ~s evolved 125 million years ago and became the dominant plants about 100 million years ago.

~ plants evolve flowers, structures that attract insects and other animals to spread pollen. The evolution of the ~s cause a major burst of animal evolution. Half of all known dinosaur species are from the last 30 MY of the Mesozoic, after the rise of the ~s.
65 MYA ...

~ Phylogeny website glossary:Glossary of botanical terms.
NCBI Taxonomy: Search and browse NCBI's database of organisms.

~ophyta the plant phylum which contains the flowering plants.
Animalia the kingdom containing animals.
Annelida the animal phylum containing earthworms and leeches.

~ The group of plants characterized by having flowers as their sexual reproductive structures.
angiotensin Blood protein formed from the interaction of renin and a liver protein, causing increased blood pressure and stimulating release of aldosterone and ADH.

~s evolved from gymnosperms, their closest relatives are Gnetae. Two key adaptations allowed them to displace gymnosperms as the dominant fauna -- fruits and flowers. Fruits (modified plant ovaries) allow for animal-based seed dispersal and deposition with plenty of fertilizer.

In ~s, genome size is extremely variable, ranging from 63 Mb in Genlisea margaretae to 148,900 Mb in Paris japonica, that is, a 2,400-fold difference [1].

The ~s are the flowering plants. The flowers are the organs of sexual reproduction where the seeds are produced. ~ (vessel seed) seeds differ from those of the gymnosperm (naked seed) seeds in being protected by a covering of fruit that develops from the tissues of the flower.

Most exam boards only require knowledge about reproduction in ~s - the flowering plants.
Flower structure
Sexual reproduction in flowering plants centres around the flower. Within a flower, there are usually structures that produce both male gametes and female gametes.

pinnately netted
~s (flowering plants) can be classified into 2 main groups based on the types of roots, stems, leaves, flowers, and seeds they contain.
One seed leaf ...

By the Carboniferous Period, about 355 million years ago, most of the Earth was covered by forests of primitive vascular plants, such as lycopods (scale trees) and gymnosperms (pine trees, ginkgos). ~s, the flowering plants, didn't develop until the end of the Cretaceous Period, ...

As an aid in identifying other conserved regions of ~ CENP-Cs, we developed gene models for full-length Cenpc cDNAs by aligning them with available genomic sequences (Additional data file 1).

Now flowers is something developed by the kind of plant called the ~s or simply flowering plants. What flowers do, is they set one of the challenges that plants have when they're engaging in sexual reproduction.

They are observed in the ~ plants, i.e the flowering plants.
The structure of the flower consists of four whorls.
Calyx :
- It is the outermost whorl and formed of the units called sepal.
- It is a little leaf like part, which covers and protects the flower.

Xylem tissue is a feature of higher vascular plants (Filicinophyta, Coniferophyta, and ~aphyta). It developed as plants became less dependent on water and lived in drier environments. It is the tissue which conducts water (and dissolved nutrients) from the soil to the leaves.

vascular plants with protected seeds ~s; the most developed and complex vascular plants.
vascular plants with unprotected seeds gymnosperms; vascular plants that contain naked seeds, such as the conifers.
vectors the carriers of DNA genes to be inserted into cells.

Transfer of pollen from the anther to the stigma in ~s or from the microsporangium to the micropyle in gymnosperms.

Cf. autogamy.
Related Terms:
Transfer of pollen from the anther to the stigma in ~s or from the microsporangium to the micropyle in gymnosperms.

The terminal pollen sac of a stamen, inside which pollen grains with male gametes form in the flower of an ~.
Covered in BIOL1020 Lab 6 Mitosis & Meiosis ...

Tertiary: The first period of the Cenozoic Era which began about 65 million years and lasted to 1.6 million years before the present, marked by formation of high mountains, the dominance of mammals on land, and ~s superseding gymnosperms as dominant plants.
More Biology Terms ...

See also: See also: What is the meaning of Plant, Trans, Organ, Flower, Cell?

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