Questions

Yes, plant cells have Mitochondria.

While plant cells have chloroplasts to photosynthesize, they also require ATP for cellular functions, and do use oxygen to break down some of the sugar they produce in order to generate that ATP. They need mitochondria for this.

In particular, at night when there is no light, plants undergo cellular respiration since there is no sunlight to photosynthesize.

They do, however, produce far more sugar and oxygen through photosynthesis than they use up in respiration.

Ramesh Agrawal

The total number of instructions a computer executes per second is called as its processors speed. 

Maximum the processor's speed minimum the time for execution.

A test to determine processor speed is a benchmark.

A Book always has Pages. Without pages it can't be called as a book. A book can be either with or without preface, text or index but it can't be without a page.

Hence, A Book always has page.

Packet filter is a standard router equipped with some extra functionality. The extra functionality allows every incoming or outgoing packet to be inspected. Packets meeting some criterion are forwarded normally. Those that fail the test are dropped

William James was an early proponent of functionalism.

Augustus was a Roman statesman and military leader who served as the first Emperor of the Roman Empire, controlling Imperial Rome from 27 BC until his death in AD 14. Jesus was born in 4 BC.

Hence, Augustus was the Roman Emperor when Jesus was born.