Which tissues are characterized as being highly cellular but avascular? nervous and muscle muscle only epithelial and connective tissue epithelial only nervous and connective tissue?

The correct answer is - epithelial only.

Explanation:

Epithelial cells are the cells that arise from the upper layer of the body such and form the surface of the body for example skin, organs, blood vessels and other. They serve as a barrier in the outer environment and the inner side of the body. It helps to protect the body from microbes like viruses.

The three main characteristics of these cells are; specialized cell-cell junctions , innervated , highly cellular with little extracellular matrix but these cells are not vascular.

Thus, the correct answer is - epithelial only.

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explanation:

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.