Being a good dicot, carrots have branched venation.
No, marigold has reticulate venation in its leaves.
parallel
Depending on what type of leaf - a monocot leaf (grasses etc) have parallel veination and dicot leaves (woody plants) have reticulate veination (more randomly spread).
In comparing a parallel artery and vein, you would find that the vein had thinner walls and a darker color. The artery would have thicker, more muscular walls and a brighter red color.
it is grass
Popliteal artery
fissure vein dural venous sinus
Renal Vein
Monocots have one seed leaf while Dicots have two seed leaves. Monocot leaves have parallel veins but dicot leaves have a central vein with side veins that branch out from it in a herringbone formation.
Blood leaves the intestine through the hepatic portal vein and goes to the liver.
the veins are parallel to each other
It forms a net-like lattice.