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Under normal light conditions auxins are spread out in the plant. But when sunlight varies, auxin is broken down on the sunnier side of the stem. The higher concentration of auxin on the shady side causes the plant cells on that side to grow more so it bendstoward the light.
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False, common examples of pathogens are pollen and animal hair.
An antigen called an allergen causes the immune system to react in an excessively ferocious way to a perceived threat that would otherwise be harmless to the body. Allergies are the term for such reactions.
Technically speaking, an allergen is an antigen that, when exposed to atopic persons, can trigger an immunoglobulin E (IgE) response, resulting in a type-I hypersensitivity reaction.
The majority of Immunoglobulin E responses in humans are only activated in response to parasite infections. Some people, however, may react to a variety of widespread environmental antigens. Atopy is the name given to this inherited tendency. Non-parasitic antigens in atopic people cause erroneous IgE production, which results in type I hypersensitivity.
To know more about allergen, click here,
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Genotype of mother : IAIB
Genotype of father : ii
Gametes from mother are : IA and IB
Gametes from father are : i and i
F1 offsprings will show the following combinations:
a) IAi - type A blood
b) IBi - type B blood
So the children's could possible have A or B blood group.
Answer:
Rapid increase or accumulation in the population of algae