<< placentals placentation >>

placentas Meaning in Tamil ( placentas வார்த்தையின் தமிழ் அர்த்தம்)



Noun:

வயிற்றில் இருக்கும் கருவுக்கு ஊட்டம் கொடுக்கும் உறுப்பு,



placentas தமிழ் அர்த்தத்தின் உதாரணம்:

None

placentas's Usage Examples:

This is seen in cases where the margins of the carpel do not unite, but remain separate, and consequently two placentas are formed in place of one.


apocarpous, there are generally separ ate placentas at each of their margins.


5), the perianth which is generally petaloid occupying the two outer whorls, followed by two whorls of stamens, with a superior ovary of three carpels in the centre of the flower; the ovary is generally three-chambered and contains an indefinite number of anatropous ovules on axile placentas (see fig.


The flowers spring from, or are enclosed in, a spathe, and are unisexual and regular, with generally a calyx and corolla, each of three members; the stamens are in whorls of three, the inner whorls are often barren; the two to fifteen carpels form an inferior ovary containing generally numerous ovules on often large, produced, parietal placentas.


below upwards and leaving the placentas with the seeds attached to the replum or framework of the septum.


The placentas are parietal, and the ovules appear sessile on the walls of the ovary.


The ovary of passionflowers is one-celled with three parietal placentas, and bears at the top three styles, each capped by a large button-like stigma.


Free central placentation, there fore, has been accounted for in two ways: either by supposing that the placentas in the early state were formed on the margins of 2 FIG.


- Diagrammatic section of a five-carpellary ovary, in which the edges of the carpels, bearing the placentas and ovules o, are not folded inwards.


carpellary leaves, and that in the progress of development these leaves separated from them, leaving the placentas and ovules free in the centre; or by supposing that the placentas are not marginal but axile formations, produced by an elongation of the axis, and the carpels verticillate leaves, united together around the axis.


The implantation of several embryos and placentas in the endometrium of the uterus results in a competition for space and inevitably some implant in an area without good circulation.


In many cases, however, the placentas are formations from the axis (axile), and are not connected with the carpellary leaves.


c, The one-celled ovary cut a, The anther, con transversely, having three taining pollen parietal placentas.





Synonyms:

uterus, womb, afterbirth, embryonic membrane, caul, vascular structure, veil,



Antonyms:

show, unveil, uncover, demystify,

placentas's Meaning in Other Sites