endosperm layer

Listing 1 - 10 from 18 for endosperm layer

The Seed Biology Place - Seed Structure and Anatomy
... endosperm are the two covering layers of the embryo. The amount of endosperm in mature seeds is highly species-dependent and varies from an abundant endosperm layer (Nicotiana tabaccum) to a single layer ... ). Although Arabidopsis does not have a massive endosperm layer, the single endosperm cell layer could be involved in regulating endosperm rupture. Only some Brassicaceae seeds are endospermic ( ...
www.seedbiology.de

The Seed Biology Place - Seed Evolution
... endosperm. The endosperm is an embryo-nourishing tissue and is, depending on the species, parially or fully obliterated during seed development. However, most angiosperm species have retained an endosperm layer in the mature seed. In many of these cases, the endosperm not only functions as nourishing tissue, but is ...
www.seedbiology.de More from this site

Angiosperm Families - Acanthaceae Juss.
... , Ruellia). Anther epidermis persistent. Microsporogenesis simultaneous. Anther wall initially with one middle layer; of the ‘dicot’ type. Tapetum glandular. Pollen monosiphonous; shed as ... cells), or not proliferating; ephemeral (usually), or persistent. Synergids pear-shaped. Endosperm formation cellular. Endosperm haustoria present; chalazal and micropylar (‘terminal’, the latter usually the ...
delta-intkey.com

Angiosperm Families - Aceraceae Juss.
... tetrads tetrahedral, or isobilateral. Anther wall initially with one middle layer, or initially with more than one middle layer. Tapetum glandular. Pollen monosiphonous; shed as single grains. ... type. Antipodal cells formed; 3; not proliferating; ephemeral. Synergids at least sometimes hooked. Endosperm formation nuclear. Fruit non-fleshy; a schizocarp. Mericarps 2; samaroid (each conspicuously one- ...
delta-intkey.com More from this site

The Cycad Pages
... fleshy outer sarcotesta, and with or without spongy tissue beneath the inner woody sclerotesta. Endosperm haploid, derived from the female gametophyte. Embryo straight; with 2 cotyledons that are usually ... Section Cycas 1 Spongy tissue not present in seeds 2 Fibrous layer present in sarcotesta -- Subsection Cycas 2* Fibrous layer not present in sarcotesta -- Subsection Endemicae 1* Spongy tissue ...
plantnet.rbgsyd.nsw.gov.au

The Cycad Pages
... ). Seeds are large, with a 2 layered testa; an inner woody layer, and an outer, often distinctly coloured, fleshy layer. Endosperm is haploid, derived from the female gametophyte. The embryo is straight, with ...
plantnet.rbgsyd.nsw.gov.au More from this site

Arboretum Images 1
... fibrous husk (mesocarp) in inner woody endocarp with three germination pores. The meaty seed tissue (endosperm) even tastes a little like the coconut. In fact, this palm was once placed in ... of C. alba showing sharp, claw-like spines. The leaves have a thick, waxy cuticle layer covering the epidermis. Several pieces of raw carnauba wax from C. prunifera are also shown ...
waynesword.palomar.edu

Cereal (Grain) Photos #1
... from a wild, weedy species (T. tauschii = Aegilops squarrosa). The endosperm of this hybrid wheat is especially high in protein and ... of a rice grain showing the embryo (germ), pericarp (bran ) and endosperm. In polished white rice, the nutritious germ and outer bran layers ... and is not visible in this image as a distinct layer. Mule: Hybrid Between Horse (Mare) & Donkey (Jackass) The mule is ...
waynesword.palomar.edu More from this site

APSnet Education Center - Introductions to the Major Pathogen Groups - Introduction to Parasitic Flowering Plants
... and will germinate spontaneously; however, establishment only occurs on living hosts. Emerging from the photosynthetic endosperm, the seedling radicle is negatively phototropic and thus grows towards a dark surface (often the ... name Viscaceae derives from a feature of the seeds - the viscin - that forms a sticky layer on its outer surface (Figure 48), (Figure 49) which attaches the seeds to the host ...
www.apsnet.org

Popcorn, endosperm and the food we eat - Plant Talking Points, Science Education and Outreach
... is different because a core of soft, wet endosperm is surrounded by a layer of hard, stony endosperm. When heated the water in the soft endosperm turns into steam, which expands. When the pressure gets high enough, the kernel explodes, turning itself inside out. The hard endosperm ...
www.botany.org

These listings are filtered
View all for endosperm layer