Do pollen grains transport genetic material from flower to flower?
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Pollen is located within stamen of the flower with include the filament and anther. The stamen is the male reproductive organ of the flower.
Entomophily is a form of pollination whereby pollen is distributedby insects. These plants usually have characteristics that makethem more attractive to insects.
The stigma is the pollen maker to help put flowers outside so we can have honey make by the bees .
Because the pollen grains have to travel by pollinating agents from anther to the stigma. To ensure their probability to achieve the task they outnumber the ovules.
No, after a research it is not seen that a pollen grain of a flowerhave only one lobe. Commonly pollen grain have two or three lobes.
The part of the flower that produces pollen is called the stamen.The stamen is made of two parts, the filament and the anther. Thefilament is the little stem that holds up the anther, which is thepart that actually makes the pollen.
Sorry but for a better answer you might want to look at anothersource wiki answers isn't alwaysa reliable source.
flowers produce more pollen grains because the anther makes the pollen it then the stigma collects pollen and the petals of flowers atract insects or birds.
pollen grains are the male gametes .And if there wont be any pollen then what will fuse with the female gamete.................... Thus female gametes need pollen to reproduce as with out it there wont be any flowers in the world In other words the pollen fertilizes the ovary, in order to create… a new flower :):) xxx (MORE)
pollen is the male reproductive part of the flower. i guess you could call it plant sperm.
yes they do they move from flower to flower taking pollen out for there honey
the bees that get the pollen produce it all back but not all they take and thats how flowers die
two based on "This structure is called the pollen grain. The smaller generative cell divides mitotically (either now or later) to produce two sperm. The two sperm are located inside the pollen tube." - Inquiry into Life : 11th edition; page 179
Which of these true 1 after pollination the grain trvels down inside carpel 2 all flowers are pollinated by insects 3 all flowers are pollinated by pollen from a different flower?
1. After pollination, the pollen grain travels down inside the carpel. This is true : the pollen grain lands on the surface of the stigma, and germinates to give the pollen tube. The pollen tube then pushes between the looselt packed cells of the style, with the pollen tube nucleus preceding the 2 …male nuclei. The pollen tube nucleus then will degenerate once the pollen tube has grown down and has penetrated the ovule, and the 2 nuclei then go on to fertilise the female gametes (one fertilises the ovum, the other fertilises the 2 female polar bodies to form the triploid endosperm which acts as a food store. Since the carpel is made up of a single leaf rolled to form an enclosed chamber : the ovary, and is effectively made up of stigma, style, ovary and ovule, i would say that it is true.. 2. All flowers are pollinated by insects. This is definitely false! Some flowering plants are wind pollinated. Their flowers will tend to be smaller and more inconspicuous as they have no need to attract insect, so there is no need for them to waste valuable energy amd resources making themselves pretty and coloured! Wind pollinated flowering plants include trees, cereals and grasses among others.. 3. All flowers are pollinated by pollen from a different flower. This is also false. Some flowering plants can self-pollinate, so the pollen shed from the anther of the flower lands directly on the stigma of the same flower, germinates, and fertilisation takes place. This is very advantageous if the plant lives in a harsh environment which is very sparsely populated, as it may not be able to reproduce otherwise, as there would need to be another plant to pollinate it. Having said that, self-pollination does have several disadvantages, and these include reduced genetic variation, and an increased likeliness of harmful recessive alleles accumulating in the offspring and causing defects etc. As a result, many plants will have mechanisms to prevent self-pollination, for example some plants are dioecious which means that the plants are unisexual - the male and female sex organs are borne on different plants, as in holly, yew and willow. Alternatively, some plants will show protogyny where the male parts of the flower mature at a different time to the female parts - this means that self-pollination cannot take place. (MORE)
The purpose of pollen is to transfer the male reproductive cells (sperm) to the female reproductive cells (ovules) and thus to allow sexual reproduction. Pollen can be so transferred by many methods - wind, gravity, insects, etc. The pollen receptive part of the flower (the stigma) is often sticky, …or textured so the pollen will stick. Once attached the pollen grain grows a tube into the stigma and down the style into the ovule. This tube allows the male gametes to fertilise the ovule, creating a seed. (MORE)
Flowers produce a large number of pollen grains because they arelost in transit while trying to fertilize one ovule. Microsporemother cells produce microspores that develop into pollen grains.
as many that stick to the stamen. it differs from plant to plant and it also depends on how many pollen grains stick to the insect that carries it.. though once the pollen grain comes into contact with the stamen a pollen tube is created to reach the ovary. then two "sperm" come from this tube and …one fertalizes the egg and one become the endosperm for nutrients for the egg/seed (MORE)
Insect-pollinated flowers have larger pollen grains so as to makeit easy for the insets to carry them. Bees are the most commoninsects that facilitate pollination.
Pollen grains are transferred to the stigma of a flower duringpollination. This process is usually completed by bees.
Pollen can be transferred by the wind or by insects such as bees. Some flowers are also pollinated by animals such as bats and hummingbirds.
Pollen is lost in transit. Eggs are stationary, so don't get lost unless it is Valentine's day.
Light and small pollen grains are easier to lift by the wind; so even the lightest breath of air will take pollen flying
Most pollen is transferred by flying insects. In some cases it is windborne. It can in one or two rare cases be transferred by slugs or snails.
Pollen grains are often called as microspores or male gametes. They are produced in pollen sacs present in pollen chambers in the anthers of the flower . They are produced due to repeated division of microspore mothercells and are haploid (n).
Pollen can be dispersed by wind, gravity, animals and water . However the largest group responsible for pollination are insects . Plants can also undergo self-pollination if the flower fails to be pollinated by an external factor.
The pollen grains from the stamen (male part) of the flower are transferred to the carpel (female part) of another flower to pollinate (fertilize) that flower.
Because they will be blown by wind and so that they could have more fruits can grow in the same species
its because pollination is very uncertain....a lot if pollens go waste if wind is not favourable.....which is the case usually...pollens reach the rirght spot not very easily....
well, the name of this movement is called pollination as you can see. If you think the movement of pollens is called nectar then u are wrong there because nectar is the liquid that comes from the plant so that is why it is wrong.
Pollen can be carried from flower to flower by several pollinatingagents such as bees, wasps, flies, hummingbirds. Some plants selfpollinate. Humans trying to create hybreds can pollinate with aQtip.
Yes because the pollen then will later produce more and provide which is considered reproduction in term.
Flowers grow the (male) pollen, then various animals carry thepollen to the (female) gynoecium (typically a stigma) to causereproduction
the function of the pollen sac is to produce pollen (pollen grains). The pollen sac is the microsporangium of a seed plant in which pollen is produced. Most plants except coniferous plants contain four (4) pollen sacs.
For pollen grains, the answer is easy - not all pollen will reach another flower, it has to depend on wind or an animal vector, and some may be lost to rain or being brushed off by a non-pollinating organism that happens to come in contact with the pollen. So the more pollen produced, the better the… chance that some will reach its intended target. For the number of ovules, this isn't well known. It's often thought to be related to the primitive or advanced development of the plant species. As a plant becomes more "advanced", the number of parts generally decreases, often through fusion of the parts. (MORE)
Pollen is produced in the microsporangium (contained in the anther of an angiosperm flower, male cone of a coniferous plant, or male cone of other seed plants).
pollen grains are transported from the microsporangium (contained in the anther of an angiosperm flower, male cone of a coniferous plant, or male cone of other seed plants)
Some of the pollen grains carried by wind,insects,birds or bats may reach a carpel and stick to the ripe stigma.Each pollen grain produces a tiny tube which grows down to the style,into the ovary and towards the ovules or egg cells.when one of the tubes reaches an ovule,it bursts open.A male nucleus… from the pollen grain then moves down the pollen tube to join with the nucleus of the female sex cell,the ovule.when the nuclei of the pollen grains and ovules have joined together, the ovules are said to be fertilized. (MORE)
Pollen grains from plants which do not flower are very similar to that of flowering plants, except they are different.
The stigma recieves the pollen grain from the anther. It then travels down the pollen tube inside the style and goes to the ovary.
How the bees catches some of the pollen grains and drops them on another flower and how Pollination occurs?
The rear legs of the bees are hairy. When they enter a flower pollen grain being light attaches itself on the hairy legs. It is transferred to another flower when theres some frequent movement of the bee,either by flaping their wings or walkin in out the flower. This inturn results to cross poliinat…ion. (MORE)
when pollen grain are transferred from the stigma the ovule of theflower , whats takes place
There are chemical barriers that doesn't allow pollen grains of different species to develop pollen tube in other flowers. The chemical barriers is commonly known as chemotrophism.
It depends. If the pollen that the plat came from is part of the other plant's family, then it is crossbred. However, if not, the pollen will not travel down through the other plant's stigma. Such as a white and red rose will make either a pink or a red rose.
well basically it goes like this . first of all, humans cant reproduce with other animals apart from other humans of the opposite gender (example) . also, the flower is only adapted to the same typeofpollen grains,so it wouldnt do anything to get a different one . also,getting to females or twom…ales to reproduce is virtually impossible, because they have they same body parts and not allof the reproductive systems that are needed,a plant as the male gametes and the female gametes, soimagine the pollen grain nucleus as the sperm and the ovule as the the egg, they need different chromosomes tomake another human, as the plant needsa nucleus to make a seed. i hopes this helps! even i found it confusing! (MORE)
The sticky bulb called the stigma . A part of the female aspect of the flower.
Because during gamete formation,one member of the allelic pairseparates from one another to form the genetic constitution of thegamete (the gene responsible for flower colour of the allele willoccur singly due the separation of the members of the allelicpair).
The pollen grain released from the anther lobe during anthesis reaches the stigma by pollination. Thereafter, it germinates on the compatible stigma to send pollen tube to the micropyle of the ovule inside the ovary. The male gametes from the pollen grain are transferred to the embryo sac for fertil…ization and the ovule is converted into a seed when zygote develops into an embryo. (MORE)
Pollination is the transport of pollen from the anther onto the stigma of the flower. Pollination can be carried by insects, other animals and wind.
Nothjing would happen if a pollen grain from a rose flower fell onthe stigma of a lemon flower
Some people may be allergic to flower pollen but it does not causeany diseases. Disease are generally caused by bacteria or viruses.