make a labeleled sketch of the transverse section of a mammalian bone.

(a) Draw a labelled schematic diagram of the transverse section of a mature anther of an angiosperm plant. (b) Describe the characteristic features of an insect pollinated flower.

Draw a labelled sketch of the section of a mature pollen grain.

In a transverse section of a sunflower root :

(a) Draw a diagrammatic sketch of a transverse section of an anther of an angiosperm . Label its different walls and the tissue forming microspore mother cells. (b) Describe the process of microsporogenesis upto the formation of a microspore. (c) Write the function of 'germ pore' in a pollen grain of an angiosperm.

Transverse section of stem of Cucurbita can be identified from the transverse section of maize stem by the presence of–

Which of the labelled parts in the transverse section of tomato fruit, is/are diploid ?

Which of the following is characteristic of mammalian bone ?

Draw a diagrammatic sketch of the microscopic view of a mammalian sperm and label any four parts of it.

A conjoint and open vascular bundle will be observed in the transverse section of