Biology

Intermediate neurons, also known as interneurons, are located in the brain and spinal cord where they connect sensory and motor neurons to process information.

ATP (adenosine triphosphate) is known as the energy currency of the cell because it stores and provides energy for many cellular processes. The other options are incorrect as fat is an energy storage molecule, lead is a toxic metal, and 'None of These' is not applicable.

The optic nerve is known as the second cranial nerve because it is the second of twelve cranial nerves and is responsible for transmitting visual information from the retina to the brain.

Carpology is the study of seeds and fruits, focusing on their structure, development, and classification. This makes option C the correct answer.

Cockroaches can survive for weeks without their heads because their brains are not essential for basic bodily functions like breathing and circulation, which are controlled by nerve centers in their body segments. Other insects listed do not have this capability.

Xerostomia is the medical term for dry mouth, which occurs due to reduced or absent saliva flow. This condition is commonly recognized and distinct from dryness of skin, nose, or head.

Karl Landsteiner discovered the ABO blood group system in 1901, which was a groundbreaking finding in immunology and transfusion medicine. This discovery allowed for safer blood transfusions by matching compatible blood types.

Aphasia is a condition characterized by the loss or impairment of the ability to communicate, typically due to brain injury or stroke. Therefore, the inability to communicate is the correct description of aphasia.

Most owls are nocturnal hunters, meaning they primarily hunt during the night when their prey is active and their vision and hearing are most effective.

The gestation period of mice is approximately 3 weeks (around 19 to 21 days), making option C the correct choice.