Answer : Option CExplaination / Solution:
Ostrich is a large sized bird. It is not able to fly long distance. The egg of ostrich is considered largest cell which is about one meter in diameter.
Q2.Which of these is an example of point to point communication?
Answer : Option CExplaination / Solution:
In point to point communication,communication occurs over a link between a single transmitter and receiver.Telephony is an example of it as it needs a link between caller and receiver to transmit the information.This link is provided by various media like cable.
Q4.Reason for low productivity in agriculture sector
Answer : Option DExplaination / Solution:
Traditional methods of cultivation and low level of technology like manual ploughing are mainly responsible for low productivity of agriculture.
Answer : Option CExplaination / Solution:
Equal vectors are vectors that have the same magnitude and the same direction. Equal vectors may start at different positions.