Answer:
Fish utilise a counter-current system in order to maximise the amount of oxygen that can extracted from water. Water has a much lower oxygen content than air and as such fish need a much more efficient system that can extract a much higher proportion of oxygen from the surrounding water.
Explanation:
A gene<span> is a stretch of DNA or RNA that determines a certain trait. </span>Genes<span> mutate and can take two or more alternative forms; an </span>allele<span> is one of these forms of a </span>gene<span>.</span>
Answer:
The muscle tissue shortens to performs it's function which we know as muscle contraction
Answer:
the fungi grows in the direction of stimulus
Explanation:
Tropism is a biological phenomenon in which any organism responds in the direction of stimuli.
A fungi when gets in touch or contact of any environmental stimulus , it starts growing or responding in that specific direction is such a way that its growth can be considered as stimulus driven directional growth.
In fungi's basically thigmotropism occur, where it responds to external mechanical stimulation
Answer:
(B) agglutination with anti-A antibodies.
Explanation:
ABO blood type is based on two types of antigens: A and B antigens. The anti-A antibodies react with antigen A while anti-B antibodies react with antigen B.
Blood type A has antigen A on the surface of its red blood cells and anti B antibodies in its plasma. Due to the presence of antigen A on its red blood cells, the blood type A shows agglutination with anti A antibodies.
