Testa vs Placenta - What's the difference?
testa | placenta |
(botany) A seed coat.
* 1840 , James Scott Bowerbank, A History of the Fossil Fruits and Seeds of the London Clay ,
* 1969 , C. W. Bennett, Seed Transmission of Plant Viruses'', Alison Smith, ''Advances in Virus Research , Volume 14,
* 1977 , Commonwealth Scientific and Industrial Research Organization, Australian Journal of Plant Physiology ,
* 2005 , D. W. Dickson, D. De Waele, Nematode Parasites of Peanut'', Michel Luc, Richard A. Sikora, John Bridge, ''Plant Parasitic Nematodes in Subtropical and Tropical Agriculture ,
* 2007 , J. Smartt, Evolution of American Phaseolus beans under domestication'', Peter John Ucko, G. W. Dimbleby (editors), ''The Domestication and Exploitation of Plants and Animals ,
(marine biology) The external calciferous shell, or endoskeleton, of an echinoderm; the test.
(anatomy) A vascular organ in mammals, except monotremes and marsupials, present only in the female during gestation. It supplies food and oxygen from the mother to the foetus, and passes back waste. It is implanted in the wall of the uterus and links to the foetus through the umbilical cord. It is expelled after birth.
(botany) In flowering plants, the part of the ovary where ovules develop; in non-flowering plants where the spores develop.
As nouns the difference between testa and placenta
is that testa is head while placenta is (anatomy) a vascular organ in mammals, except monotremes and marsupials, present only in the female during gestation it supplies food and oxygen from the mother to the foetus, and passes back waste it is implanted in the wall of the uterus and links to the foetus through the umbilical cord it is expelled after birth.testa
English
Noun
- The testa develops from the tissue, the integument, originally surrounding the ovule.
page 30,
- The seeds are furnished with a reticulated testa , very much in appearance like that of the seeds of two closely-allied pericarps in the cabinet of my friend Mr. Ward, of Wellclose-square, the names of which I have been unable to obtain, but which present strong evidence of belonging to the MalvaceƦ .
page 224,
- In tests with the Lincoln and Virginia varieties of cowpea, Crowley (1959) found that, in plants infected with bean southern mosaic virus before blossoming, the virus was present in nearly 100% of the testae and endosperms of seeds of both varieties, but could not be detected in the embryos.
page 354,
- Thus, two conditions must be satisfied for the testas' to have this effect: contact between the '''testas''' and the radicle, and the presence of at least half of the ' testas .
page 419,
- A.[Aphelenchoides] arachidis is a parasite of pods, testae, roots and hypocotyls, but not the cotyledons, embryos or other parts of the plant (Bos, 1977a; Bridge et al., 1977).
page 458,
- One of the most remarkable features of cultivated beans is the enormous range of testa colours and patterns which can be found.