The correct answer for the question that is being presented above is this one: "newts." The vertebrate that is ectothermic is a newt. A newt is a semiaquatic amphibian of the family Salamandridae, although not all aquatic salamanders are considered newts. Ectothermic is <span>an animal that is dependent on external sources of body heat.</span>
The directional selection is the type of natural selection, in which an extreme phenotype is promoted due to the changes in the environment. This causes the changes in the allele frequency and the shifting of the phenotype in a particular direction. In this condition, one of the extreme phenotypes are promoted, which result in the shifting of genotypic frequency either of the homozygous characteristics.
Answer:In which way are a euglena and a volvox different? A euglena is an individual cell, while a volvox is a colony of cells. A euglena uses cilia to move, while a volvox uses flagella to move.
Explanation:
