Common Mushroom Tissue

[A5HLEY]

Hi guys, I just have a quick question.

My question is:
A common mushroom (that you would purchase in a grocery store) mostly consists of tissue that is:
a) haploid
b) diploid
c) in the heterokaryon phase
d) in the phylym Zygomycetes
e) in the same phylum as angiosperms

I was leaning towards C, but I'm not really sure...

Thank you for your help!

[MrMistery]

here's a hint: the majority of tissue can be either haploid or diploid. So the answer is either A or B. Both can't be wrong.

[Cat]

A5HLEY, you answered correctly.

MrMistery, you are incorrect in case of mushrooms. Technically heterokaryons are neither haploid (they have 2n/cell) nor diploid (two nuclei => not a single genome).

[MrMistery]

That is true: the heterokaryon stage is a special case, if you want to call it that. I see nothing wrong with calling a keterokaryon diploid, but as the majority of books make the distinction, i accept it. However, the keterokaryon is a transient stage(pardon the word, some fungi retain this stage for many years) in the sexual reproduction of a fungus.

The fungus body, the mycelium, is haplod. Here is a nice picture of the life cycle of a fungus. From Biology 7th edition, Campbell and Reece

[Cat]

Just to clarify: "mushroom" is the fruiting body that is produced by sexual reproduction of fungi during heterokaryon stage.

[MrMistery]

I stand corrected. I didn't read the initial question thoroughly and answered another question