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In some plants the pistils don't form until a few days after the stamens do how might this plant keep a plant from self-pollinating?
For a flower to be pollinated, pollen from an anther (which is located at the top of the stamen) needs to reach a stigma (at the top of the pistle.) Some plants are genetically capable of pollinating themselves if their own pollen reaches their own stigma; some plants are not capable of self pollination under any circumstances. For plants that can genetically self pollinate, but would prefer not to, they can avoid this by having their pistil and pollen/stames mature at different times. If the stamens mature first, the pollen will be dispersed by animals or wind or whatever dispersal mechanism it relies on. Then by the time the pistil is ready to be pollinated, there is no pollen left in that flower to land on the stigma.
How might having the anther atop a tall filament make it more likely plants will be pollinated?
The anther makes the pollen I think, but you might wanna check though.
How might pollen germination and growth be controlled?
Pollen germination and growth can be controlled by environmental factors such as a decrease in bee populations. Other factors that can control it include human efforts.
Sticky secretion on the scales of seed cones traps?
A sticky secretion on the scales of seed cones traps pollen grains. Structure is produced by a pollen grain that lands near an ovule is pollen tubes.
Why does plants have petals?
Plants flower for one simple reason: pollination. The bright coloured flowers and the scent attracts insects towards them. While the insect is sucking the nectar, the pollen grains get attached to its hairy skin. Then this insect visits another flower and the pollen grains might get deposited on the stigma. There you go, the flower has been fertilized and very soon, it wil become a fruit. Now you will ask why does it become a fruit? Here's why: To distribute its seeds.
In some plants the pistils don't form until a few days after the stamens do how might this plant keep a plant from self-pollinating?
For a flower to be pollinated, pollen from an anther (which is located at the top of the stamen) needs to reach a stigma (at the top of the pistle.) Some plants are genetically capable of pollinating themselves if their own pollen reaches their own stigma; some plants are not capable of self pollination under any circumstances. For plants that can genetically self pollinate, but would prefer not to, they can avoid this by having their pistil and pollen/stames mature at different times. If the stamens mature first, the pollen will be dispersed by animals or wind or whatever dispersal mechanism it relies on. Then by the time the pistil is ready to be pollinated, there is no pollen left in that flower to land on the stigma.
What stigma might a defendant acquire once he is convicted?
A stigma against lawyers! Aka prosecutors.
Grows from the pollen grain to the ovule?
Pollen tubes grow from the pollen grains to the ovules. Lipids on the surface of the stigma stimulate growth of the pollen tubes. Self sterile plants prevent themselves from growing seeds by not creating these lipids.
What is polinators?
Transfer of pollen grains in seed plants from the stamens, where they form, to the pistil. Pollination is required for fertilization and the production of seeds.
Which perspective focuses on the stigma that a defendant might acquire once he or she is convicted?
Nonintervention
How might these skills you learn today transfer into the future?
You might be able to transfer smells while communicating in the future
Why cant you bring flowers into a hospital?
because some flowers might have pollen and some people might be allergic to them
Does sperm cell grows out of a pollen grain?
i do think it does in humans but it might in plants.
How can pollen be used to work out where people or objects have been?
the pollen might stick to their clothes, hands/fingers and hair, which can be an easy source to find out where the person has been.
What do honeybees collect?
If you might have noticed a recent answer, which was pollen, that answer is wrong. Bees collect nectar, which they turn into honey. pollen sticks to their legs and falls onto other flowers. this is called pollination.
What is a pollinator and how might one be attracted to a plant?
A pollinator is also referred to as a "vector" or "agent". This is the method or means whereby pollen is transferred from the anthers of one plant to the stigma of another. Agents can be living things such as bees, birds, ants, beetles, bats etc.; they can also be nonliving such as wind and water.
How plant reproduce asexually?
plants can carry both the sperm and the egg cell, making technically both male and female. This means it just mixes its pollen and egg to create a seed, as opposed to two mammals having to mate to create a baby. Plants might use an outside force, however, to take the pollen to the egg to fertilize it and create a seed. This is where bees, wind, etc. come in. Bees take pollen from flowers and spread it. Wind can shake a pine tree, making it release pollen from pine cones when open (try shaking a pine tree when the pine cones are open, you see a big fog of pollen).
