Citrus thorn/spine is actually modification of

Thorn is a modification of

In Bougainvillea and Citrus thorns are the modification of …………(i)……..and in cactus spines are a modification of ………..(ii)……….

In Bougainvillea and Citrus thorns are the modification of …………(i)……..and in cactus spines are a modification of ………..(ii)……….

In Cacti the spines are modification of :-

In Opunita, spines are modification of

In Opuntia, spines are modification of

In opuntia the spines are modification of

In Opunita, spines are modification of