Answer the following:
Which part of the human brain is the most developed?
The Cerebrum is the most developed part of the human brain. It is the largest part of the brain and is responsible for higher mental functions like reasoning, learning, and memory.
Which part of our central neural system acts as a master clock?
The Hypothalamus acts as a master clock in our central neural system. It regulates the body's circadian rhythm (24-hour cycle) and maintains homeostasis by controlling various physiological activities.
Explanation
The provided context lists 'Cerebrum' and 'Hypothalamus' in the differentiation questions (Q8), identifying them as key parts of the brain discussed in Chapter 18. Based on the NCERT curriculum for Class 11, the Cerebrum is identified as the most developed and largest part, controlling complex cognitive functions. The Hypothalamus is identified as the 'master clock' because it regulates biological rhythms and homeostasis.