In animal development, which of the following best describes the process of cleavage? Mitosis What are the cells created by cleavage called? Blastomeres Which of the following are the three germ layers contained in the gastrula? Ectoderm, mesoderm, endoderm Which of the following stages of development is defined by the three embryonic tissue layers (ectoderm, mesoderm, and endoderm)? Gastrula

xylem travels _____, and it is used to transport _____ up, water the capacity of a single parenchyma cell to regenerate into an entire plant is called ____ totipotency what is a major component of the middle lamella? pectin A nail is driven (6 feet above ground level) into the trunk of an oak tree. Oak trees grow 1 foot per year. In 4 years (include spring growth in each year), the nail would be: 6 feet above ground level