Final answer:
While the exact number of cells in a kangaroo is not specifically known, it can be inferred that they typically have several trillion cells, similar to other large multicellular organisms such as humans.
Step-by-step explanation:
The question "How many cells does a kangaroo have?" can be addressed by considering what is known about multicellular organisms and the number of cells they contain. Like other large multicellular organisms, kangaroos begin life as a fertilized egg and, after trillions of cell divisions, develop into complex organisms.
While the exact number of cells in a kangaroo would vary and is not specifically known, we can infer that it is typically several trillion cells like other large mammals. This would be similar to the number of cells in humans, as both humans and kangaroos are large, complex organisms.
As for the different types of cells, the human body starts as a single cell at fertilization and gives rise to trillions of cells, organizing into tissues and becoming committed to different developmental pathways. This diversity in shape and function reflects the many roles that cells fulfill in an organism's body.
There are somatic cells, which include all body cells excluding reproductive cells and carry the same number of chromosomes. Moreover, all cells fall into one of two general types: prokaryotes or eukaryotes, depending on how they store their DNA.