Monocot vs Dicot: Seeds, Leaves, Roots and Flowers in 3D
Flowering plants fall into two big groups, named after the first leaves in the seed. Monocots, like tulips and grasses, have one seed leaf. Dicots, like sunflowers and beans, have two. Look at the leaves, roots and flowers and you can usually tell which is which.
Monocot vs dicot at a glance
| Monocot | Dicot | |
|---|---|---|
| Seed leaves | One | Two |
| Leaf veins | Run side by side, in parallel lines | Branch out in a net |
| Flower parts | Usually in threes | Usually in fours or fives |
| Roots | Many thin roots of the same size | Usually one main taproot with side roots |
| Stem bundles | Scattered through the stem | Arranged in a ring |
| Wood | Almost never makes true wood | Many grow wood and become trees |
| Examples | Tulip, onion, grasses, rice, orchids, palms | Sunflower, bean, rose, oak, apple |
The quickest test
Look at a leaf. Long, strap-like leaves with straight parallel veins usually mean a monocot. Broad leaves with a net of branching veins usually mean a dicot. Then count the petals: threes or sixes point to a monocot, fours or fives to a dicot. A tulip has six petal-like parts, two rings of three.
What the seed shows
Split open a bean and you will see it falls into two halves. Those are the two seed leaves, called cotyledons, packed with food for the baby plant. A grain of maize or wheat does not split in two, because a monocot has just one seed leaf.
Quick facts
- Monocot comes from mono, one, and cotyledon, seed leaf.
- Almost all the grains people eat, rice, wheat and maize, are monocots.
- Botanists now split dicots into eudicots and a few older groups, but dicot is still the everyday word.
- Palm trees are monocots, which is why their trunks have no growth rings.
- There are more dicot species than monocot species.
See them in 3D
Monocot vs dicot questions
What is the difference between a monocot and a dicot?
A monocot has one seed leaf, parallel leaf veins and flower parts in threes. A dicot has two seed leaves, net-like veins and flower parts in fours or fives.
Is a tulip a monocot?
Yes. Tulips have one seed leaf, parallel leaf veins and flower parts in threes.
Is a bean a monocot or dicot?
A dicot. A bean seed splits into two halves, which are its two seed leaves.
Is a sunflower a monocot or dicot?
A dicot, with two seed leaves, net-veined leaves and a taproot.
Is grass a monocot?
Yes. Grasses, including wheat, rice and maize, are monocots.
More face-offs: see all 3D comparisons.
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