There's great variation when it comes to the size of pollen grains, and there's no correlation between the size of the plant and the size of the pollen it produces. Large male and female plants might generate s
Pollen is the male sperm producing gametophyte of a plant. A pollen grain contains both non-reproductive cells, known as vegetative cells and a reproductive or generative cell. In flowering plants, pollen is produced in the anther of the flower stamen. In conifers, pollen is produced in t...
To examine whether the OPPP also produces NADPH within pollen plastids, we treated WT pollen with the OPPP inhibitor 6-aminonicotinamide (6-AN). 6-AN did not significantly compromise pollen tube germination and growth over a wide range of concentrations (10–500 µM), although treatment with...
Pollen production is a critical part of the plant reproduction process. Pollen is produced in a male flower's stamen, and it is a powder of grains that produces the sperm seeds of plants. The stamen is the male organ of the flower and contains a small stalk called a filament. The polle...
Stingless bee colony. A - Brood cells; B - Pollen pot; C - Pot of honey. Figure created by the authors Full size image Nectar is also an important resource for bee nutrition, being the main source of carbohydrates (Maia Silva et al.2015). Honey is a viscous solution composed basically...
Nettles actually contain small amounts of hista- mine, the very substance that is released by the mast cells that produces the allergy symptoms. Nettles also contain formic acid, the same stuff that produces the redness and swelling in an ant bite. So, nettles is another example of like ...
What produces pollen grains and where are pollen grains produced? Pollen grains are produced by the male structure of the flower and pollen grains are produced in, specifically the anther of flower-bearing plants (angiosperms) or in the microsporangia of gymnosperms. The structure of pollen ...
Larkin JC, Brown ML, Schiefelbein J (2003) How do cells know what they want to be when they grow up? Lessons from epidermal patterning in Arabidopsis. Annu Rev Plant Biol 54:403–430 ArticlePubMedCASGoogle Scholar Li N, Zhang DS, Liu HS, Yin CS, Li XX, Liang WQ, Yuan Z, Xu B,...
What are the reproductive cells produced by meiosis called? Since there are 2 kinds of gametes, and plants reproduce, do plants have gender or do they asexually reproduce? Explain. Which part of an apple flower produces cells by meiosis?
mandshurica is the only species that produces pollen with a sterol composition usually found for plant sporophytes, which is a large proportion of campesterol and an even larger one of sitosterol. All other species have profiles indicating a limitation in the second methyl transfer (SMT2) at C28...