Centrioles are organelles that are found only in animal cells and they produce flagellum and centrosomes.
Centrosomes help organize the microtubules present in the animal cell during cell division and also regulate the cell cycle.
Furthermore, the flagellum produced by centrioles in sperm cells help the cell move towards the egg and cause fertilization.
Algae. These pioneer species don't need much to survive, therefore, common pioneer species are bacterial organisms and fungi.
Answer: an abiotic factor
Explanation:
The rapid speciation of mammals as a result of the availability of new habitat due to the extinction of the dinosaurs 65 million years ago is an example of adaptive radiation.
