2006-08-30 02:24:26 · 6 answers · asked by anhony ho 1 in Science & Mathematics ➔ Biology
Heteroecious - life cycle alternating between two different hosts.
Puccinia graminis is heteroecious and is widespread on grasses in its uredinial and telial states, when it forms brown (uredinia) or black (telia) stripes on stems and leaf-sheaths. The grasses are the main, or primary, hosts.
The aecia and spermogonia occur on species of Berberis (barberry) and Mahonia (oregon-grape). Berberis and Mahonia are the alternative, or secondary, hosts.
2006-08-30 23:40:40 · answer #1 · answered by bumperbuffer 5 · 0⤊ 1⤋
Cheating
2006-08-30 09:29:22 · answer #2 · answered by Arron never walk's alone 4 · 0⤊ 0⤋
I think it is called "heterodemicycyclic" but I wouldn't swear on it.
(Oh how sad the things we remember from University degrees that we never use again).
2006-08-30 09:42:08 · answer #3 · answered by Robin 2 · 0⤊ 0⤋
i don't think rust is alive - it's oxidation, like a very slow burn
2006-08-30 09:30:28 · answer #4 · answered by just visiting 5 · 0⤊ 0⤋
We call him dirty double-crosser
2006-08-30 09:27:53 · answer #5 · answered by Peyman 2 · 0⤊ 0⤋
heteroecious
2006-08-30 09:36:51 · answer #6 · answered by Graham I 6 · 0⤊ 0⤋