BIOL 111 Lecture Notes - Lecture 7: Main Stem, Monocotyledon, Root System

• School: McGill University
• Department: Biology (Sci)
• Course: BIOL 111
• Professor: Rudiger Krahe

Document Summary

Biol 111 lecture 7 plant body: primary and secondary structure. Simple and compound leaves: simples leaves are those with a single blade, some compound leaves consist of leaflets arranged along a central axis, further division of the axis results in a doubly compound leaf. Shape of a monocot leaf: consists of leaf sheath, leaf blade and sometimes ligules and auricles, venation in monocot leaves is parallel. Leaves have stomates the opening of which is controlled by regulating hydrostatic pressure in the guard cells: unlike animals angiosperm plan body has permanent embryonic regions or meristems . The cells in these regions retain the capacity to divide throughout the life of the plant which y be thousands of years. Apical meristems: indeterminate or permanent: shoot apical meristem (sam, root apical meristem (ram, the activity of apical meristems results in primary growth and increase the length of the shoot-root axis and the height of the plant.