The axillary bud is constituted by the cells ‘left behind’ from
Root apical meristem
Shoot apical meristem
Intercalary meristem
Lateral meristem
Which of the following have sunken stomata?
......... Occurs in layers below the epidermis in dicotyledonous plants.
Closed vascular bundles lack
Contractile tissues have the following features
$(i)$ Mesodermal in origin
$(ii)$ They contain stretch receptors.
$(iii)$ Rhythmic contractions are seen in them
$(iv)$ They do not fatigue during the life of the animal
Which of the above are characteristics of sphincters?
A timber merchant told to the customer that log of wood he is purchasing belongs to $20$ years old tree. He did so by