PLANTS
PLANT REPRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a mate does not have to be nearby
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it can be achieved by different types of pollination (wind, animals, etc ____ )
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there is less chance involved as to whether or not pollen will make it to pistil.
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it increases the genetic diversity of the offspring.
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Detailed explanation-1: -The primary disadvantage of self-pollination is that there is no cross-pollination of genetic material. As a result of which: The vigour and vitality of the race are significantly diminished. The immune system of the offspring is weakened as a result of the pregnancy.
Detailed explanation-2: -Self-pollination leads to the production of plants with less genetic diversity, since genetic material from the same plant is used to form gametes, and eventually, the zygote.
Detailed explanation-3: -The seeds are in smaller quantities. New plant varieties cannot be created. Because the endosperm is so little, the seeds produced are feeble.
Detailed explanation-4: –Without bumble bees, a flowering plant that can self‑pollinate lost substantial genetic variation within only nine generations, an experimental study found. A group of “selfing” monkeyflower plants lost 13% to 24% of their genetic variation compared to another group that were propagated by bumble bees.
Detailed explanation-5: -Self-pollination leads to lack in variation that means no adaptation towards changing environment or potential pathogen attack. It also leads to inbreeding depression lead to weakening the species. Due to these disadvantages many flowers that can self-pollinate tends to avoid it.