Question

state one reason why cross pollination is preferred over self pollination?

Answer 1

☺Heya !

here's your answer :

cross pollination is preferred over self pollution as :

>>new varieties can be produced , by doing pollination among different species of flowers / plants. it provides variation because genetic information from various plants is combined.

>>the new varieties are not weak . they are strong and are able to overcome the harsh environmental changes around them.

>>in case of repeated self pollination ,the harmful recessive traits ie the genetic diseases or defects or weaknesses of plants , get a chance to express themselves in the plant , and they pass from one generation to another.
This is avoided by cross pollination because if there is a defect in one species , it can be removed by cross pollination by not pollinating another flower with defected flower , or even any good traits can be mixed , so as to improve overall quality of flowers and plant.

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hope it helps !!! ^_^

Answer 2

Answer:

hey

Explanation:

the cross pollution is preferred over self pollination because

_> new variation can be produced

when pollen grains of one species is pollinated to another then the characters of both the species combines to form new variant

_>the variant can create a chance of survival of the plant if the niche of the ecosystem changes drastically

_>the disease will develop in the forthcoming generations if pollination takes within the same flower .this can be removed due to cross pollination of other species

_>through cross pollination unisexual flowers can produce their progeny. as they don't have male reproductive part and can't undergo s3lf pollination