A number of structural differences make these two

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: icots (two cotyledons in the seed). A number of structural differences make these two groups fairly easy to tell apart: • monocots: 3 petals and 3 sepals (though the sepals may look like the petals), parallel veins in the leaves, fibrous root system. • dicots: flower parts in 4’s, 5’s, and 6’s, always has sepals distinct from petals, leaves have a network of veins, taproot system. • All plant cells arise from meristem cells. These are rapidly dividing, undifferentiated cells found at the shoot tips, root tips, edges of leaves and petals, and in a cylinder around many stems. In general, plants grow from the tips outward. • Apical meristems are found at the top shoot and the tip of the leading root. Lateral meristems are found in the stem of the plant, and are also called cambium. • Primary growth in plants is due to division of apical meristem cells. Primary growth makes shoots grow taller and roots grow longer. • Secondary growth occurs by the division of lateral merist...
View Full Document

Ask a homework question - tutors are online