Cut a transverse section of young stem of a plant from your school garden and observe it under the microscope. How would you ascertain whether it is a monocot stem or a dicot stem? Give reasons.
The dicot stem is characterised by the presence of conjoint, collateral and open vascular bundles, with a strip of cambium between the xylem and phloem. The vascular bundles are arranged in the form of a ring, around the centrally-located pith. The ground tissue is differentiated into the collenchyma, parenchyma, endodermis, pericycle and pith. Medullary rays are present between the vascular bundles.
T.S. of dicot stem
The monocot stem is characterised by conjoint, collateral and closed vascular bundles, scattered in the ground tissue containing the parenchyma. Each vascular bundle is surrounded by sclerenchymatous bundle-sheath cells. Phloem parenchyma is absent and water-containing cavities are present.
T.S. of monocot stem
Read the different components from (a) to (d) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem. (a) Secondary cortex (b) Wood (c) Secondary phloem (d) Phellem
What is a periderm? How does periderm formation take place in the dicot stems?
Hypodermis is _______ in sunflower stem and _________ in maize stem.
In a mature dicot stem. which has undergone secondary growth, the youngest layer of secondary xylem is situated
Read the following statements and select the correct option. Statement 1: Annual rings are distinct in plants growing in temperate regions Statement 2: In temperate regions, the climatic conditions are not uniform through the year
Which of the following statements is incorrect?
Select the correct option: Given are a few peculiar parts/structures found in plants Cucurbita stem, potato tuber, walnut shell, jute fibres. Identify the tissue responsible for the distinguishing feature in each part respectively and select the correct option
A conjoint and open vascular bundle will be observed in the transverse section of
Pith is not well developed in
Growth rings are formed due to the activity of