Yes
vascular
non vascular
Vascular
There are both Vascular and Non-Vascular plants.
Papaya is a tropical fruit which grows on a vascular plant (tree).
vascular
non vascular
The possessive form for the singular noun lettuce is lettuce's.
is coconut vascular plant
Vascular
its vascular
because it has a stem and seeds
There are both Vascular and Non-Vascular plants.
Papaya is a tropical fruit which grows on a vascular plant (tree).
romaine lettuce is different because it is much fresher than reg lettuce.
The noun lettuce has varied usage in the plural. Traditionally the usage is "three heads of lettuce", but the alternative "three lettuces" has become very common during the last century. The collective noun is always "I like lettuce" or "this farmer grows lettuce".
Lettuce is a noun.