Choose the true statement about the nucleolus of the cell.
a)it is found in both eukaryotic and prokaryotic cellsb)it is the control center of the cell where dna is madec)it has a nuclear membrane and resides outside the nucleusd)it lacks a nuclear membrane and resides inside the nucleus

It lacks a nuclear membrane and resides inside the nucleus.

Explanation:

The nucleus is considered as controlling centre of the cell. The parts of the nucleus includes nucleolus, nuclear pore, chromatin, and nuclear envelope. Nucleolus is the part of the nucleus which is present inside the cell and lacks a nuclear membrane and its function is producing and assembling of ribosomes.

The reason for not considering other statement as true are as follows:

1. Nucleolus is found only in Eukaryotas.

2. Nucleus is the control centre of the cell.

3. It lacks a nuclear membrane and resides inside the nucleus.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.