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...
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 some of the tiniest grains of pollen, while diminutive plants may yield pollen ...
Pollen tube is the fastest-growing plant cell. Its polarized growth process consumes a tremendous amount of energy, which involves coordinated energy fluxes between plastids, the cytosol, and mitochondria. However, how the pollen tube obtains energy and
The association between yeast and SLB was first reported in the work by (Rosa et al.,2003). Yeasts associated with stingless bees can be found in plants and flowers, in pollen and nectar collected by them, in honey, in fermented pollen (samburá), in brood cells, in larvae, and in th...
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 ...
In addition to the cells in pollen grains, specialized pollen walls have been developed to protect the male gametes and to meet the requirement for dispersal and interaction with the pistil. With respect to the female gametophyte, it is composed typically of seven cells, namely an egg cell, ...
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...
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...
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 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?