Prokaryotic cells don't have a nucleus
The blackberry is an example of an aggregate fruit. These are made by the merger of several ovaries, while simple fruit is made by just one. Other fruits from this fruit type are raspberry and dewberry.
I think that the question is not clear enough. Can you be more specific?
If your question was something like this: how many atoms of hydrogen can be around carbon, then the answer is 4. Carbon forms 4 bonds with other atoms.
Please note that carbon need not always form bonds to four atoms. A carbon could form a double bond with an oxygen and then two single bonds to hydrogen atoms. The carbon is only bonded to three atoms, but is forming a total of four bonds (1 double and 2 singles).
