Question

spikes and pins have pointed ends . give reason​

Answer 1

Answer:

Reason For This

1). To Decrease Loss Of Water Through Transpiration.

2). To Protect Themselves From Grazing Animals

Answer 2

Answer:

The ends of the nails and pins are made sharp in order to minimize the area which in turn increases the pressure.So when you hit the nail on its head , even a small force converts into a large pressure due to the small area of the tail and the nail is able to insert in the wall.