Question Detail
Question
Regarding mitosis and cytokinesis, one difference between higher plants and animals is that in plants: a. sister chromatids are identical, but they differ from one another in animals b. the spindles contain microfibrils in addition to microtubules c. spindle poles contain centrioles, whereas spindle poles in animals do not d. a cell plate begins to form at telophase, whereas in animals a cleavage furrow is initiated at that stage
Correct Answer
Option D is the correct answer.
Detailed Explanation
A major difference is in cytokinesis. Plant cells, with their rigid cell wall, form a cell plate in the middle that develops into a new wall. Animal cells form a cleavage furrow that pinches the cell in two. The other statements are incorrect.
Hint
Plants build a new wall from the inside out; animals pinch from the outside in.