Why are some fuits seedless?

Question

using auxins how are seedless oranges and grapes produced

thanxx a lot

Answer 1

these r special seed less hybrid varieties

Answer 2

Seedless fruit can only be propagated from cuttings or by root division.

Auxins are growth hormones used on the cuttings to get them to root.

Because auxins are need for fruit growth then giving this growth hormone to the plant will cause it to produce seedless fruit.

If you remove the seeds from some fruits they stop growing, auxins will make that fruit grow. The seeds could be unviable genetically.

If the seeds were never fertilized auxins will still make the fruit grow.

They give seedless oranges and grapes doses of auxins

With seedles grapes it is to make them grow bigger.

With oranges it is to make them fill and ripen.

Answer 3

Seedless fruits are fruits that have been developed to possess no seeds, generally to make consumption easier and more convenient

Biologically, the term is somewhat an oxymoron, since fruits are usually defined (in a botanical sense) as mature ovaries containing seeds.

Seedless fruits can develop in one of two ways: either the fruit develops without any fertilization (parthenocarpy), or pollination triggers fruit development but the ovules or embryos abort without producing mature seeds (stenospermocarpy). Seedless fruits of banana and watermelon are produced on triploid plants, whose three sets of chromosomes prevent meiosis from taking place and thus do not produce fertile gametes. Such plants can arise by spontaneous mutation or by hybridization between diploid and tetraploid individuals of the same or different species. Some species, such as pineapple and cucumber, produce seedless fruit if not pollinated, but produce seeded fruit if pollination occurs

Common varieties of seedless fruits include: watermelons, grapes and bananas. citrus fruits, such as: oranges, lemons and limes..☻