what would happen if we remove the vein from the leaf
It would no longer survive and has no use towards the plant it self.
No
parallel
It depends on what sort of leaf. In broad leaved flowering plants it is normally down the middle. Gingko biloba doesn't have a main vein but many radiating from the stem. The Narrow leaved flowering plants have a series of so called main veins. The conifers don't have leaves, they have needles.
they have a single vein of vascular tisse in the leaf
That would be referred to as a vein, or if a valuable mineral, an ore vein.
The scientific term for the vein of a leaf is Xylem and phloem.
Because main vein has to be strong enough to support the leaf blade.
lateral vein is hindi ko alam
lateral vein is hindi ko alam
A vein runs through the leaf and is a thin, firm structure. It looks different from the rest of the leaf, especially the thin membrane that makes up the body of the leaf.
The scientific term for the vein of a leaf is Xylem and phloem.
The leaf blade , the main vein , the veins , the stem and the leaf.
It is called a vein.
The central vein can be called a midrib or mid-vein
The leaf's branching vein pattern was absolutely mesmerizing.
Main vein, Central vein, Mid vein are all correct to a point. "Rachis" seems to be the scientifically preferred term, though. "Midrib" also sees some usage in a few types of leaf.
perallel veins