Read this essay to learn about the meaning and significance of root-stem transition. Essay # 1. Meaning of Root-Stem Transition: The change in orientation of vascular tissues from exarch radial type in root to endarch and conjoint collateral type in stem is designated as root-stem transition. The continuity between the vascular strands of roots and stems is maintained but the [...]
Read this essay to learn about:- 1. Meaning of Shoot Apex 2. Angiosperm Shoot Apex 3. Gymnosperm Shoot Apex 4. Shoot Apex of Pteridophytes. Essay # 1. Meaning of Shoot Apex: The shoot apex proper is considered as the region of initiation of the primary organisation of the shoot in which the processes of unlimited growth take place. This region [...]
In this essay we will discuss about the monocot and dicot stem. Essay # 1. Monocot Stem: Some monocotyledons belonging to the family Liliaceae have arborescent habit with woody stems like Dracaena, Yucca, Cordyline, Agave, Aloe etc. They exhibit an anomalous secondary growth in thickness producing a cambium which is abnormal both in position and function. After the cease of [...]