Pollen

Pollen is a powder made of pollen grains, which produce sperm cells (male cells used for reproduction) of seed plants. The pollen grains are actually...

The pollen tube is the tube through which sperm from the pollen reaches the egg cell, and fertilises the plant to form seeds. The pollen tube of most seed...

microsporangium contains pollen mother cells. These undergo meiosis, and produce pollen grains, which contain the male gametes (sperm). The pollen grains are actually...

sexual reproduction in plants. It describes how the pollen grains get to the female parts of a plant. Pollen grains, which contain the male gametes, need to...

A stigma is a part of a flower that gets pollen from pollinators such as bees. The stigma is part of the female reproductive part of a flower, the pistil...

structure of their pollen. Other dicotyledons and monocotyledons have an older type of pollen, whereas eudicots have derived pollen. Apart from cotyledon...

Some pollen will get stuck to the bee. The bee moves on to another plant and the pollen falls onto that plant. The sperm is moved down a pollen tube until...

wasps and sawflies. There are about 20,000 species of bees. Bees collect pollen from flowers. Bees can be found on all continents except Antarctica. Bees...

("fused"). Carpels and pistils have three parts: a stigma at the top where the pollen lands; a style and an ovary. In the case of a pistil, the stigma, style...

cone is the female cone, which makes seeds. The male cones, which make pollen, are usually smaller and much less easy to see, even when fully grown. The...

Inside the part of the flower that has petals are the parts which produce pollen and seeds. In all plants, a flower is usually its most colourful part. We...

pollinators. The plant which offers the pollen is called the pollenizer. To be a pollinator, an insect has to move pollen from the male anther to the female...

often lie flat before falling away. The pollen of the oriental poppy, Papaver orientale, is dark blue. The pollen of the field poppy or corn poppy (Papaver...

in this genus is accomplished in an unusual manner, as the pollen is grouped into pollen sacs. The feet or mouthparts of flower visiting insects such...

of vertebrates, Organic compounds, for example in pollen and spores. The area of study for pollen and spores, including fossils, is called palynology...

flowers, pollen with one pore, and usually branching-veined leaves. Monocots about 7000 species, with trimerous flowers, a single cotyledon, pollen with one...

of the filament (a stalk) that holds the anther, which produces the pollen. Pollen is needed for plants to produce seeds. The carpel is the female part...

eruptions, and pollution. Dust can also contain small amounts of plant pollen, hair from people or animals, skin cells, and many other things. Dust in...

Fossil pollen and spores are important for studying the history of plants. Micropaleontology and palynology both include studying fossil plant pollen and...

Bunchberry, Cornus canadensis, has a flower which opens its petals and fires pollen in less than 0.5 milliseconds. The record is currently held by the White...