Space has 3 million dimensions
There are (so far) three dimensions of space, and one dimension of time.
A plane is a flat surface with only two dimensions. No real planes are found in space, because all matter has 3 dimensions.
Space is the enormous volume in which matter and energy are located and through which motion takes place. Space is observed to have three dimensions, which are length, width, and depth (or height). It is hypothesized that there may be more dimensions than the three that we observe in our daily lives. String theory gives space ten dimensions and M-theory gives it as many as eleven dimensions including that of time.
Just using the word plane suggests that it is in 3-space (assuming you are talking about a real plane, not a complex or otherwise one; and provided you mean how many REAL dimensions does a plane occupy) and so it would occupy 2 dimensions. In general a hyper-plane in n-dimensional space occupies n-1 dimensions.
the plane, or xy plane, has two dimensions space has 3 dimensions
In 2 dimensions, a circle. In 3-dimensions, a sphere.
String Theory (as its predecessors Relativity and Quantum Mechanics) has only one dimension of time. However it has many more dimensions of space than its predecessors (both had 3 dimensions), as the simplest version of String Theory must have 10 dimensions of space, while more complex versions require more (with no defined upper limit known). The big question is "Why can't we detect those additional 7+ dimensions of space that must be present if String Theory is true?".
Time is one dimension, not four. If you combine it with space, you can "visualize" it as four dimensions: three dimensions of space, one of time. Sort of visualize it - we can't really visualize four dimensions.
It is a point.
A location in space but no dimensions.
Spacial dimensions are the dimensions in space such as length,height and depth.
It depends on the dimensions of the truck and the volume occupied by its storage space.