Pollen grains are well preserved as fossils because of the presence of . . . . . . .

In pollen mother cells,cytokinesis during meiosis is:

Which layer of cells possesses dense cytoplasm and generally has more than one nucleus?

Which of the following has proved helpful in preserving pollen as fossils?

Germpore is the region where the exine is

One pollen mother cell may produce four germinating pollen grains,each with two male nuclei and one tube nucleus. How many meiotic divisions are necessary to bring this about?