sporangium (pl. sporangia) A tiny globe in which the spores are produced; often applied to the capsule, but by some authors restricted to the spore sac, or inner sac of the capsule containing the spores. GardenWeb Glossary of Botanical Terms ...
sporangium -- A chamber inside of which spores are produced through meiosis. sporophyll -- Any leaf which bears sporangia is called a sporophyll.
Sporangium- A hollow, unicellular or multicellular saclike, spore-producing structure. Sporophyll- A modified leaf or leaflike structure which bears sporangia, e.g., the stamens and carpels of the angiosperms.
sporangium (plural: sporangia). A structure in which asexual spores are produced. spore. A reproductive body produced by certain fungi and other organisms, capable of growing into a new individual under proper conditions.
The sporangium in most ferns is a thin-walled case, usually on a stalk, that has a ring of thick-walled cells known as the annulus, which aids in opening the sporangium when the spores are fully mature.
Gymnosporangium juniperi-virginianae Schw. authored by R.C. Pearson, H.S. Aldwinckle, and R.C. Seem. INTRODUCTION ...
Bryophytes have very reduced sporophytes, with only a stalk and a capsular sporangium, no leaves or roots, often even without chlorophyl.
Cedar-Apple Rust, Gymnosporangium juniperi-virginianae I. Introduction: Cedar-apple rust can infect leaves and fruit of most cultivars in the mid-Atlantic region.
Each pollen sac, or microsporangium, of the anther contains numberous microsporocytes, each of which undergoes meiosis to form four haploid microspores. Every microspore develops into an immature male gametophyte, also called a pollen grain.
The opening of an anther, fruit or sporangium at maturity to release its contents (pollen, seeds or spores). Deltoid A triangular leaf, attached to the stem or leaf stalk (petiole) on one side, rather than at a point. See Cuneate.
Cedar-apple fungal disease, called cedar-apple rust (Gymnosporangium juniperivirginianae), attacks numerous varieties of apples plus. More What Are the Causes of Mold on Leaves of Flowers in Pots?
ovule search for term- n. (L. ovum, an egg) a structure in seed plants which contains the megasporangium (nucellus), megaspore (embryo sac), a food store, and a coat, and develops into a seed after fertilization.
See also: Spore, Plant, Produce, Genera, Water
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