The correct answer is arthropoda.
Phylum arthropoda includes animal which lack tissues. Arthropoda is termed as a proposed grouping of arthropods.
They are being characterized by their cuticle and jointed limbs which are made of chitin. Their brains are formed by fusion of ganglia and their brains are formed of fusion of different number of segments.
Arthropods contribute to supply of food in human either indirectly or directly as pollinators of crops.
"Down- regulation results in an increase in the number of target-cell receptors" statements is incorrect.
<u>Option:</u> B
<u>Explanation:</u>
The generation of gene products with the biological context of organisms: down-regulation is a mechanism by which a cell reduces the amount of a cellular product, such as RNA or protein, in accordance to an external stimulus, for instance, on type 2 diabetes, insulin receptors may be downregulated.
The supplementary process involving these component increments is called up-regulation. Enhanced uterine oxytocin receptors occur in pregnancy's third trimester, inducing a contraction of the smooth uterine muscle.
Hey could you just mind yiu own business like sheshhhhhhhh
