
1) Reproductive structure
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https://www.crosswordclues.com/clue/endosperm

Endosperm is the tissue produced inside the seeds of most flowering plants around the time of fertilization. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein. This can make endosperm a source of nutrition in human diet. For example, wheat endosperm is ground into flour for bread (the...
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http://en.wikipedia.org/wiki/Endosperm

nutritive tissue in a seed; albumen.
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http://en.wikipedia.org/wiki/Glossary_of_botanical_terms

The nutritive tissue of a seed, consisting of carbohydrates, proteins, and lipids.
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http://howtobrew.com/book/glossary

• (n.) The albumen of a seed; -- limited by recent writers to that formed within the embryo sac.
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http://thinkexist.com/dictionary/meaning/endosperm/

Tissue rich in nutrients which surrounds the embryo in most seeds; orchid seeds lack endosperm.
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http://www.anbg.gov.au/cpbr/cd-keys/orchidkey/html/glossary.html

tissue that surrounds and nourishes the embryo in the angiosperm seed. The initiation of endosperm is a definitive characteristic of angiosperms and ... [11 related articles]
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http://www.britannica.com/eb/a-z/e/30

A storage tissue characteristic of the seeds of angiosperms (flowering plants), which develops from the union of a male nucleus and the polar nuclei of the embryo sac. The endosperm is digested by the growing sporophyte either before maturation of the seed or during its germination.
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http://www.daviddarling.info/encyclopedia/E/endosperm.html

Tissue present in the seeds of angiosperms, external to and surrounding the embryo, that it provides with nourishment in the form of starch or other food reserves. Formed by the division of the endosperm mother cell after fertilization, may be absorbed by the embryo prior to seed maturation or may persist in the mature seed. ... (18 Nov 1997) ...
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http://www.encyclo.co.uk/local/20973

The starchy or oily nutritive material that surrounds the embryo in some seeds (sometimes referred to as albumen); it is triploid, having arisen from the triple fusion of a sperm nucleus and the two polar nuclei of the embryo sac.
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http://www.encyclo.co.uk/visitor-contributions.php

Tissue present in the seeds of angiosperms, external to and surrounding the embryo, that it provides with nourishment in the form of starch or other food reserves. Formed by the division of the endosperm mother cell after fertilization; may be absorbed by the embryo prior to seed maturation, or may persist in the mature seed.
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http://www.encyclo.co.uk/visitor-contributions.php
En'do·sperm noun [
Endo- + Greek ... seed.]
(Botany) The albumen of a seed; -- limited by recent writers to that formed within the embryo sac.
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http://www.encyclo.co.uk/webster/E/39

Tripliod tissue of seeds composed mostly of starch-containing cells, that arises from the fusion of a sperm nucleus with two polar nuclei of the embryo sac. In some seeds, the endosperm persists as a storage tissue and is used to nourish the germinating seedling.
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http://www.farmworldonline.com/General/Terms.asp

Starch or other food outside or around the embryo; albumen.
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http://www.gardenology.org/wiki/Glossary_of_Gardening_Terms

The nutritive tissue of a seed, consisting of carbohydrates, proteins, and lipids.
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http://www.howtobrew.com/glossary.html

Type: Term Pronunciation: en′dō-spĕrm Definitions: 1. A storage tissue found in many seeds that nourishes the embryo of a plant.
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http://www.medilexicon.com/medicaldictionary.php?t=29196

Endosperm is the nutritive tissue in plant seeds which feeds the growing embryo.
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http://www.probertencyclopaedia.com/browse/BE.HTM

[
n] - nutritive tissue surrounding the embryo within seeds of flowering plants
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http://www.webdictionary.co.uk/definition.php?query=endosperm

short-term food supply used by the embryo to help it grow
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https://sciencetrek.org/sciencetrek/topics/botany/glossary.cfm
noun nutritive tissue surrounding the embryo within seeds of flowering plants
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https://www.encyclo.co.uk/local/20974

Nutritive tissue in the seeds of most flowering plants. It surrounds the embryo and is produced by an unusual process that parallels the fertilization of the ovum by a male gamete. A second male gamete from the pollen grain fuses with two female nuclei within the embryo sac. Thus endosperm cells are triploid (having three sets of chromosomes); ...
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https://www.encyclo.co.uk/local/21221

A temporary food storage tissue in seeds, created by the fusion of one sperm cell plus the two polar nucleu, and therefore often triploid.
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https://www.encyclo.co.uk/local/22581

The nonliving part of the barley grain which contains starch and protein to feed the growing acrospire.
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https://www.encyclo.co.uk/local/22619

The starch and gluten-forming protein center of grain, which serves as the plant’s food supply. The endosperm is the largest portion of the grain kernel (80-85%), and is the major flour portion after the bran and germ have been removed. Learn more here:
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https://www.homebaking.org/glossary/

nutritive matter in seed-plant ovules, derived from the embryo sac.
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https://www.infoplease.com/dictionary/endosperm
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