Does an apricot have to have another one near it to cross pollinate to produce fruit?
Mostly not. Apricots are self-pollinating with a couple of
exceptions that I am aware of. A new variety called 'Perfection'
needs 'Trevatt' and 'Early Divinity' needs 'Moorpark' for better
cropping. You may still get fruit, but not in quantity or quality.
The vast majority don't need any company, though.
The reason why is that they need to give pollen to the bees because its sticks to them when they go in the flower to get pollen and then when they go to another flower they drop of their nectar so the seeds grow (just like sperm). Nectar acts as a "reward" to insects that pollinate flowers; by offering up a meal of nectar the flower ensures (or increases the likelihood) that an insect will…
Just planting them does not mean the will cross pollinate. Most citrus plants are self-fertile and also if cross pollination should occur with citrus, it's possible the seeds would be affected and when those seed are planted, they may or may not produce fruit with a taste that differs from the parent plant.
The guava (Psidium guajava) flower can be self-pollinated and produce fruit (about 15.9% set), but cross-pollinating increased fruit production up to 39.5%. If you have a home garden, it isn't important to have another tree, but when considering a commercial production, it is imperative that there be different cultivars to assure cross-pollination and increased fruit production.
Self pollination: Self-pollination is when a plant is able to reproduce asexually or that it can pollinate itself because it has both stamen and a pistil which contact each other to accomplish pollination. Cross pollination: Cross-pollination though is when a plant only has a stamen or a pistil in which case the plant would need another plant with the opposite thing to pollinate. Example: if a plant has only a stamen then it will have…
Gregor Mendel's pea plant experiment allowed him great control, as pea plants can self-pollinate or cross-pollinate, and he was able to pollinate them at will. He studied the characteristics of each plant he would cross-pollinate, perform the pollination and plant the resulting seeds, then study the characteristics of the resulting plants.
Why didn't Mendel have to pollinate the first generation pea plants in order to produce the second generation?
Mendel allowed the offspring of his experimental plants to self-pollinate. That is, he allowed the male and female reproductive cells of the same plant to join and produce a seed. One of the characteristics of pea plants is that it is easy to cross different pea plants but, left to themselves, they self-pollinate with little chance of any accidental pollination between plants. Source: Harcourt Science 6 2005 edition at page A25.
Tulips cross pollinate naturally with the aid of pollinators like birds, butterflies, and bees. The pollen attaches itself to the pollinators while they are feeding on the flower's nectar. Then the pollinators accidentally transfer the pollen when at a second flower. You can cross-pollinate tulips by hand and is usually done if there are no pollinators or if there are desired traits that the gardener wishes to pass off to the offspring