What is the meaning of Enation?
Definition of enation : an outgrowth from the surface of an organ a plant virus causing enations on leaves.
What is Enation botany?
noun Botany. a small outgrowth of plant tissue, usually on a leaf, caused by virus infection.
What is an Enation or Prophyll?
: a plant structure resembling a leaf (as a bracteole) or consisting of a modified or rudimentary leaf (as a foliar primordium)
Is lamination a verb?
verb (used with object), lam·i·nat·ed, lam·i·nat·ing. to separate or split into thin layers. to form (metal) into a thin plate, as by beating or rolling. to construct from layers of material bonded together.
What is Synangium in botany?
Definition of synangium 1 : the peripheral part of an arterial trunk from which the branches arise in a lower vertebrate — compare pylangium. 2 : a sorus (as in ferns of the family Marattiaceae) made up of sporangia variously united or cohered into a compound structure.
What does mentation mean in medical terms?
Medical Definition of mentation : mental activity unconscious mentation.
Who gave the Enation theory?
Enation Theory: This theory was propounded by F. O. Bower (1935). The enation theory seems to be more convincing than the telome theory for explaining the origin of microphyllous leaves (Fig. 7.143A-D).
Do Ferns have enations?
The sporophytes in this division have neither true leaves nor roots, their stems and rhizomes fork evenly. Whisk ferns are the simplest of the vascular plants. They consist of evenly forking stems with small protuberances called enations.
Where are enations found?
Enations are scaly leaflike structures, differing from leaves in their lack of vascular tissue. They are created by some leaf diseases and occur normally on Psilotum. Enations are also found on some early plants such as Rhynia, where they are hypothesized to have aided in photosynthesis.
What does Sporophyll mean?
Definition of sporophyll : a spore-bearing and usually greatly modified leaf.
How do you use laminate in a sentence?
1 A neat touch is the central laminate of the maple necks. 2 Using a self-adhesive laminate in a smart new woodgrain finish, we resurfaced these doors and drawers in a day. 3 He tries in vain to blag my laminate off me. 4 My face and laminate is checked by dayglo security folk.
Is lamination a word?
act or process of laminating; the state of being laminated. laminated structure; arrangement in thin layers. a lamina.
Where is Synangium found?
in vascular plants, a group of fused organs, or sporangia, in which the spores develop. Synangia are characteristic of the ancient group Psilotophyta, some ferns (especially Marattia), and fernlike gymnosperms (seed ferns).
What is a Protostele?
Definition of protostele : a stele forming a solid rod with the phloem surrounding the xylem.
What is mentation and cognition?
Mentation Vs Cognition • Mentation literally refers to any thought or mental activity, whereas cognition is the process of perception or knowing.
What is normal mentation?
A patient with normal mentation may be described as bright, alert, and responsive (BAR) or quiet, alert, and responsive (QAR). A patient with abnormal mentation may be described by a progression of adjectives that range from least to most affected: depressed, obtunded, stuporous, and comatose.
What is a Lycophyll?
In plant anatomy and evolution a microphyll (or lycophyll) is a type of plant leaf with one single, unbranched leaf vein. Plants with microphyll leaves occur early in the fossil record, and few such plants exist today.
Why is the Telome theory important?
Significance of Telome Theory: (i) The telome theory portrays the origin and evolution of the sporophytes in the earliest known land plants. (ii) The theory is based mostly on account of the comparative study of the fossil as well as living genera of the vascular plants.
How do you identify a Lycophyte?
The distinguishing features of the lycophytes are the arrangement of their vascular tissues and their leaves—microphylls with only a single vascular strand. The sporangia on the modern plants are kidney-shaped, like those of the ancestral forms, and borne on sporophylls clustered in strobili.
What causes Enation?
Genus Enamovirus (type species: Pea enation mosaic virus 1) Pea enation mosaic disease is caused by a complex of two viruses, PEMV-1 which is a member of the Luteoviridae, and PEMV-2 which is an umbravirus (Demler et al., 1993; 1994a).
What is ENATION in biology?
Enations are scaly leaflike structures, differing from leaves in their lack of vascular tissue. They are created by some leaf diseases and occur normally on Psilotum. Enations are also found on some early plants such as Rhynia, where they are hypothesized to have aided in photosynthesis. ^ “Lower vascular plant – botany”.
Where do enations come from?
They are created by some leaf diseases and occur normally on Psilotum. Enations are also found on some early plants such as Rhynia, where they are hypothesized to have aided in photosynthesis. ^ “Lower vascular plant – botany”.
What is the difference between enenation and process?
enation- a natural projection or outgrowth from a plant body or organ plant process appendage, outgrowth, process- a natural prolongation or projection from a part of an organism either animal or plant; “a bony process”
What is the difference between Enation and unilateral descent?
enation- line of descent traced through the maternal side of the family cognation, matrilineage unilateral descent- line of descent traced through one side of the family 2. enation- a natural projection or outgrowth from a plant body or organ plant process