How to use in-sentence of “pollen”:
+ The pollen of some plants is very light.
+ The flowering plant sperm cells are contained within pollen grains.
+ Because of this, the bee is stuck for a while, wiggling and squirming, getting pollen all over itself.
+ So, they need another way to move pollen from one plant to another plant.
+ Carpels and pistils have three parts: a stigma at the top where the pollen lands; a style and an ovary.
+ In flowering plants, pollen has to get from one flower to another.
+ After successful pollination, the pollen grain completes its development by growing a “pollen tube” and undergoing mitosis to produce two male gametes.
+ The switch from insect prey to pollen may have resulted from the capture of prey insects that were covered with pollen when they were fed to the wasp larvae.
Example sentences of “pollen”:
+ The pollen tube is the tube through which sperm from the pollen reaches the egg cell, and Fertilisationfertilises the plant to form seeds.
+ Worker bees are females too, and they are the bees that collect pollen from flowers and will fight to protect the colony.
+ The pollen is used as protein for the bee larvae.
+ Antigens include bacteria, cells of transplanted Organ organs, plant pollen and toxins.
+ The male cones are 4–6cm long, and shed their pollen in autumn.
+ The area of study for pollen and spores, including fossils, is called palynology.
+ With tomato plants, bees move the pollen from the male parts of one flower.
+ This led to the discovery that all pollen grains in a species were alike.
+ Much of the pollen gets taken back to the nest or hive, where it is used as a source of protein, most needed by the larvae.
+ The uses of pollen and its implication for Entomology.
+ The stigmas of these flowers are feathery and hang outside the flower to catch the pollen as it falls.
+ Most beetle-pollinated flowers are flattened or dish shaped, with pollen easy to get at.
+ This means the insects help the plants make seeds by moving pollen from one flower to another.
+ The smaller pollen grain shortens the time between pollination and fertilization, which can be up to a year in gymnosperms.
+ The pollen is released by the opening of the anther.
+ Their dangling stamens produce lots of pollen that is light enough to be carried by the wind.
+ The pollen is carried by some agent to the receptive surface of the carpel of the same or another flower.
+ The pollen tube is the tube through which sperm from the pollen reaches the egg cell, and Fertilisationfertilises the plant to form seeds.
+ Worker bees are females too, and they are the bees that collect pollen from flowers and will fight to protect the colony.
More in-sentence examples of “pollen”:
+ The filaments snap upward flinging pollen out in less than half a millisecond.
+ The male anthers let go of their pollen and it blows over to a nearby female flower on another corn plant.
+ So when an insect in search of nectar inserts its proboscis into a long-style flower, the pollen from the stamens stick to the proboscis in exactly the part that will later touch the stigma of the short-styled flower, and vice versa.
+ The filaments snap upward flinging pollen out in less than half a millisecond.
+ The male anthers let go of their pollen and it blows over to a nearby female flower on another corn plant.
+ So when an insect in search of nectar inserts its proboscis into a long-style flower, the pollen from the stamens stick to the proboscis in exactly the part that will later touch the stigma of the short-styled flower, and vice versa.
+ The spores of seed plants are single cells that grow into a pollen grain or the gametophyte inside the ovule.
+ It is in the Megachilidae family of bees, which carry pollen on their underside.
+ Then it germinationgerminates, and grows a long pollen tube.
+ If thrum pollen is placed on a thrum stigma, or pin pollen on a pin stigma, the reproductive cells are incompatible and relatively little seed is set.
+ His works include keeping track of the pollen count as a piece of weather-related information to the British public, and for the prediction of increased levels of allergy to penicillin.
+ The process begins when a pollen grain sticks to the stigma of the pistil.
+ The process by which pollen gets transferred from one flower to another flower is called pollination.
+ The pollen is often stuck together in clumps called “pollinia”, which in turn get stuck to the bee.
+ The sticky stigma on another flower catches the pollen when the bee lands or flies nearby it.
+ They have three-part flowers, pollen with one pore, and usually branching-veined leaves.
+ It transports sperm cells from the pollen grain, from the stigma to the ovules at the base of the pistil.
+ After successful pollination, the pollen grain completes its development by growing a “pollen tube” and the two male gametes move through the pollen tube to the ovule.
+ The pollen on the bee’s body brushes onto the sticky top of the flower’s pistil.
+ Albert Einstein published a paper in 1905 that explained in precise detail how the motion that Brown had observed was a result of the pollen being moved by individual water molecules.
+ When the pollen lands on the stigma, the pollen will grow a pollen tube down the style, and into the ovary of the pistil.
+ It also collects pollen and nectar from banana blossoms.
+ Some flies feed on nectar and pollen as adults.
+ In angiosperms the pollen tube germinates from the pollen grain and grows the entire length through the stigma, style, ovary and ovules to reach the eggs.
+ The bases of the pollinia then mechanically attach to the insect, pulling a pair of pollen sacs free when the pollinator flies off.
+ The other kind of pollination takes place when pollen from one plant travels to the pistil of another plant.
+ Pollen is a powder made of pollen grains, which produce sperm cells of seed plants.
+ These undergo meiosis, and produce pollen grains, which contain the male gametes.
+ The bee finally finds a small opening near the top of the orchid, and it gets out so that it can get trapped inside another lady slipper, where it will give that pollen to the other lady slipper’s stigma.
+ Honey bees have special pollen baskets, usually on their rear legs; they groom the pollen off their bodies into these pockets.
+ It led to the discovery that size and shape is different between species, whereas pollen grains within a species are all alike.
+ Brown was studying pollen grains of the plant “Clarkia pulchella” suspended in water under a microscope when he observed minute particles, ejected by the pollen grains, executing a jittery motion.
+ Inside the part of the flower that has petals are the parts which produce pollen and seeds.
+ The wind can move pollen a long way before the pollen hits the sticky top of a pistil.
+ The male cones are round, 3-6 mm diameter, and shed their pollen in early spring.
+ Their pollen grains are light-weight.
+ Mega-plant fossils are rare in the park, but pollen grains and spores collected from here suggest that these forests contained sycamore, magnolia and bald cypress trees, and “Metasequoia”.
+ They live in the soil, and eat fungal hyphae, spores, pollen and other organic material.
+ Rainbow lorikeets eat mostly fruit, pollen and nectar.
+ Some pollen will get stuck to the bee.
+ The pollen of the field poppy or corn poppy is dark blue to grey.
+ The pollen grains are actually haploid male gametophytes.
+ Pollination in this genus is accomplished in an unusual manner, as the pollen is grouped into pollen sacs.
+ Bees are extremely hairy, and carry tiny electric charges which attract the pollen onto their bodies.
+ A pollen tube grows down to permit the male gamete to fertilize an egg and make a seed.
+ These undergo meiosis, and produce pollen grains, which produce the male gametes.
+ In 1672 Nehemiah Grew had some idea that pollen was the means of fertilisation in higher plants.
+ The pollen tube of most seed plants acts as a passageway.
+ Wasps are also responsible for the pollination of several plants species, being important pollen vectors and, in some cases, even more efficient pollinators than bees.
+ Similar behaviour could be switched to pollen collection.
+ Bees collect pollen from flowers.
+ It describes how the pollen grains get to the female parts of a plant.