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Plant in Biological Dictionary

Plant

For other uses, see Plant (disambiguation). It has been suggested that Plant (botanical) be merged into this article or section. ... As the broadest plant clade, this comprises most of the eukaryotes that eons ago ... Plant fossils include roots, wood, leaves, seeds, fruit, pol...

Transgenic plant

Transgenic plants possess a gene or genes that have been transferred from a different species. Although DNA of another species can be integrated in a plant genome by natural processes, the term " transgenic plants" refers to... Transgenic Plants Transgenic plants are ...

Seed plant

Seed plant phylogeny inferred from all three plant genomes: Monophyly of extant ... Phylogeny of seed plants based on evidence from eight genes. ... A seed ( ), referred to as a kernel in some plants, is a small embryonic plant enclosed in a covering called the seed ...

Zygotene

...mples of spreads of zygotene SCs with early nodules from each of the six ... Frequency of ENs associated with SCs and AEs during zygotene for six plant species ... At the zygotene , pachytene and diplotene stages, oocytes with fragmented axial ... The durations of the leptotene, zygotene...

Zygospore

...nucleate spore formed by union of similar gametes, as in algae or fungi. ... How is the zygospore of chlamydomonas formed? ... zygospore a plant spore formed by two similar sexual cells ... the zygospore of chlamydomonas formed? What is The life cycle of these fungi include a zygosp...

Xylem

...types of transport tissue; phloem is ... Xylem is the primary water-conducting tissue and phloem circulates a nutrient ... Xylem . Phloem. plant Tissues ... Link to discussion of water and mineral transport in the xylem . ... Xylem also contains tracheids. ... Buy an affordable easel from...

Xanthophyll

...thophyll means yellow leaf, referring to autumn colors, and ... xanthophyll ... xanthophyll - Definition of xanthophyll from A Dictionary of plant Sciences at Encyclopedia.com ... Xanthophyll means yellow leaf, referring to autumn colors, ... Definition of xanthophyll from the Merriam-Webs...

Weed

... A weed in a general sense is a plant that is considered by the user of the term to be ...ed .org. ARCH@ WEED .ORG ... ... publications, plant photos, and weed information. ... WEEDS HITCH... Weeds — noxious or invasive exotic (nonnative) plant species — can be found throughout the 541.7 mil...

Vessel cell

...s of the topic vessel - cell are discussed in the following places at Britannica. Assorted References function in pteridophytes ( in lower vascular plant (biology): Cells of the vascular system ) ...secondary walls display ladderlike (scalariform) thickenings. The largest tracheids are several cent...

Vascular cambium

... in the following places at Britannica. Assorted References description of plant tissue ( in tissue (biology): Plants.; Secondary, or lateral, meristem...um ... The vascular cambium is unlike the primary meristems of the plant (root and ... Vascular cambium cells are of two types (Crang and Vas...

Vascular plants

...lar tissues and periderm make up the secondary plant body ... vascular plant n. Any of various plants , such as the ferns and...ells xylem (for transporting ... Vascular plant summary with 18 pages of encyclopedia entries, es...

Vascular bundles

...ands of tracheary elements. ... A Bundle of Marks. Vascular Tissue: plant tissues (diagram) ... Vascular bundle - Wikipedia, the free encycloped...water ... The structure of vascular bundles varies among the different plant groups. ... Vascular bundles form a kind of vertical intra-net conn...

Vascular bundle

... Steles. Literature ... or xylem of the vascular bundles is associated with collenchyma cells. ... A Bundle of Marks. Vascular Tissue: plant tissues (diagram) ... Vascular bundle - Wikipedia, the free encyclopedia ... Vascular bundles ... ... into discrete strands called vascul...

Vacuoles

...is a membrane organelle which is present in all plant and fungal cells and some protist, animal and...filled with water containing inorganic... Each plant cell has a large, single vacuole that stores biochemicals, helps in plant growth, and plays an important structural role fo...

Vacuole

...is a membrane organelle which is present in all plant and fungal cells and some protist, animal and...filled with water containing inorganic... Each plant cell has a large, single vacuole that stores biochemicals, helps in plant growth, and plays an important structural role fo...

Upper epidermis

...plants leaves, flowers, roots and stems. It forms a boundary between the plant and the external world. The epidermis serves several functions, it prote...f cells that make up ... Epidermis (botany) Cross-section of a flax plant stem: 1. Pith , 2. ... The epidermis of most leaves shows dorsoventral a...

Turgor

... ' Turgor pressure' or turgidity is the main pressure of the cell contents against the cell wall in plant cells and bacteria cells, determined by the water content of the vacuole, resulting from osmotic pressure, i.e. the hydrostatic pressure produced...

Tropism

...ther pathogens also... ... negative gravitropism, bending (biologists say, turning; see tropism ) upwards. ... A " tropism " is a plant movement triggered by stimuli. ... Tropism ... Get information, facts, and pictures about tropism at Encyclopedia.com. ... tropism , invol...

Transposon

...ogy Journals, Newspapers, and magazines at HighBeam.com. Free Trial, Credit Card Required. ... have now allowed the use of transposon tagging in plant species in which active ... If following link is to a lab dedicated to transposon tagging of genes. ... Britannica online encyclopedia article...

Transgenic

...h DNA of another species can be integrated in a plant genome by natural processes, the term " tr...odified by inserting genes directly into a single plant cell genetically modified organism See GMO. ..... Future developments in transgenic technology. plant breeding and testing. How to Make Transgenic Pla...

Transcapsidation

...synergism. ... Transcapsidation happens when the virus "coat" from the plant cell is ... (see all of Nuclear, chemical and genetic: Three differen...ld spread ... ISB To Discontinue 1-800 Service. Progress In Developing A plant ... be considered were transcapsidation and possible synergistic ... Tra...

Tracheophytes

...roduction to Plants. This free synopsis covers all the ... The more highly evolved tracheophytes , on the other hand, have developed ... vascular plant n. Any of various plants, such as the ferns and seed-bearing ... Vascular plants (also known as tracheophytes or higher plants) are those plants .....

Tracheophyte

...nducting system of xylem and phloem vascular plant , tracheophyte green plant having a vascular system: ferns, gymnosperms, angiosperms ... Is an onion plant a bryophyte or a tracheophyte ? ... tracheop...

Tracheids

... - a vascular conducting element found in gymnosperms and angiosperms. ... Tracheids - dead cells that conduct water and soil nutrients up the plant (from ... cell specialization: collenchyma, fibers, tracheids , endodermis ... wings of samara, tufts on dandelion seeds, tracheids and vesse...

Tobacco mosaic virus

...nica. Assorted References agent of infection ( in plant virus ) ...of ways, the most important of which... is through insect bites, primarily by aphids and plant hoppers. One of the most well-studied viruses, t... of Tomato including ... APSnet Education Center - plant Disease Lessons - Tobacco mosaic virus ... ...

Thallus

... interesting of these is a... thallus n. , pl. thalli or -luses . A plant body undifferentiated into stem, root, or leaf. ... What does the herb th... in the free online English dictionary and encyclopedia. ... thallus - a plant body without true stems or roots or leaves or vascular system; ... Co...

Taxon

...ades respectively offer you even ... IAPT - International Association of plant Systematics ... TAXON is the journal of the International Association for plant Taxonomy and is ... Taxa . Phylum, in biology, major category, or taxo...

Syngamy

...rch from Academic Journals, Newspapers, and magazines at HighBeam.com. Free Trial, Credit Card Required. ... information on Syngamy and Bearberry plant ... Definition of Syngamy . Process of Syngamy . Real estate. Reproductive cells ... © 2009 syngamy .com. All Rights ... fertilize ( ) v. , -i...

Subsidiary cells

...roots and stems. It forms a boundary between the plant and the external world. The epidermis serves se...ression formed by the subsidiary cells . ... plant Anayomy Glossary ... plant CELLS ... subsidiary cells : cells adjacent...

Suberin

...... Suberin acts together with waxes to protect plant surfaces from water loss and ... suberin . su...in - Definition of suberin from A Dictionary of plant Sciences at Encyclopedia.com ... suberin A fatty...... Suberin acts together with waxes to protect plant surfaces from water loss and ... This is an of...

Stomata

...resent in the sporophyte generation of all land plant groups except ... Dicotyledons usually have more ...er epidermis than the ... Stomata are tiny plant structures found on the outer skin layer, also kn...of countless numbers of stomata is critical for plant function. ... Stomata are openings generally...

Stolon

... A stolon is a plant propagation strategy and the complex of individua... stolon - a horizontal branch from the base of plant that produces new plants ... Often the general...ping clone on the stolon relies on the parent plant for nutrition. ... stolon - Definition of s...

Stem

...ided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence (flowers), cones or other stems etc.... plant stem , the above ground structures that have vascular tissue and that ... Stem (bicycle part), connects the handlebars to the steer tube of a...

Stalk

..., Pathé and Mullen concluded ... Stalk , a plant stem or structure resembling a plant stem, which can include a ... The stalk of a ...lk Stalk may refer to: In biology Stalk , a plant stem or structure resembling a ...

Sporophyte

... generation alternates with a diploid sporophyte , the generation of a plant or alga that has a double set of chromosomes. A multicellular sporophyte ... sexual phase is the gametophyte.) In the sporophyte phase, a diploid plant body... The sporophyte refers to the diploid generation of the moss...

Spongy mesophyll

... Definition of Mesophyll at Dictionary.com a free online ... Mesophyll plant cel... Palisade mesophyll . Spongy mesophyll . Mesophyll cells. Stomata ... spongy mesophyll - layer of plant tissue: a spongy ... Spongy Bone. bone, illustration. Plant: mesophyl...

Spindle Fibers

...ms. Information about Spindle fibers in the free ... spindle - (biology) tiny fibers that are seen in cell ... ... DOE Science Education. plant Spindle Fiber Origins. Welcome Teachers and ... But microtubular spindle fibers and a mitotic process comparable to that of ... Titin in in...

Species

...dredge outlining how environment change plays a major role in the evolution of species . Global campaign to protect thousands of animal and plant species that are under increasing threat. In biology, a species is a kind of organism. ... by Ernst Mayr, species are "groups of ... 1 Defin...

Sorus

...ia usually on underside of a fern frond ... sorus . indusium. soredium. telium. Smut (microbiology) Polypodiophyta (division – in botany) ... A plant nursery specializing in Michigan native ferns and woodland wildflowers. ... Sorus Plants. Michigan native ferns and woodland wildflowers. Sorus P...

SnRNA

...5 snRNA genes are transcribed by RNA polymerase II, but lack a ... The research extension page of Dr.K.Ulaganathan's laboratory at Centre for plant Molecular Biology, Osmania ... Rice snRNA genes. Select the gene to ... Structure of U2 snRNA genes of Arabidopsis thaliana and their expres...
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