Answer: b) Less dense
Explanation:
Differences in density is one reason objects float or sink.
An object more dense than the fluid in which it is immersed will sink, while objects less dense than the fluid in which it is immersed will float to the surface.
But objects floats at constant level if the density is equal to the density of the fluid in which it is immersed; it neither rises nor sinks in the fluid in this case.
Answer: Option C) The unicellular organism creates a new organism.
Explanation:
Cell division involves the multiplication of cells whereby one cell divides into two daughter cells or offsprings, two divides into four and so on.
In unicellular organisms, cell division could be by the following ways:
- Binary fission in Ameoba
- Budding in Hydra
- fragmentation in Sponges.
Thus, each of these unicellular organisms divides to give rise to new organisms that are similar to their parents
