Question

What are pits? Explain their types?

Answer 1

Pits;-The pits are formed in pairs laying against each other on the opposite side of the wall, and morphologically more correct they are called 'pit pairs

There are two types of pits-1. Simple pits 2. Bordered pits

1.simple pits-these type of pits are occur in parenchyma cells, in medullary rays, in phloem fibres, in companion cells and in tracheids of several flowering plants. Simple pits may be circular, oval, polygonal elongated or somewhat irregular in its facial view.

2.bordered pits:--they are abundantly found in the vessels of many angiosperm and trachieds of many conifers.They are more complex and variable in their structure than simple pits. It may be circular., lenticular, linear or oval.