Explanation

Nerve cells (neurons) are the only cells among the options provided that possess Nissl's granules. 

Nissl's granules, also known as Nissl bodies, are large granular bodies found within the cell body (soma) and dendrites of neurons.

They are composed of rough endoplasmic reticulum (RER) and free ribosomes,

Their primary function is protein synthesis, which is vital for the growth, maintenance, and function of the neuron. 

Explanation

The joint present in the pubis is a cartilaginous joint. 

The pubic symphysis, the joint between the pubic bones, is classified as a cartilaginous joint because it is connected by fibrocartilage, allowing for a small degree of movement. 

Explanation

Arthritis is the inflammation of joints

It is a general term for conditions that cause pain and stiffness in the joints. 

Explanation

Due to biomagnification, DDT (Dichlorodiphenyltrichloroethane) accumulates more in organisms higher up the food chain. 

Seagulls, being top predators, experience the highest deposition of DDT.

Explanation

"Polytities" is not a valid or recognized sound made by monkeys.

Monkeys make various vocalizations like screeching, chattering, or howling, but not "polytities".

Explanation

Explanation

The physiological processes that would fail if a person in hot weather is unable to maintain body temperature are vasodilation and sweating 

Vasodilation (widening of blood vessels near the skin surface) and sweating are the body's primary mechanisms for heat loss in hot environments.

Vasodilation allows more blood to flow near the skin, so heat can radiate away, while the evaporation of sweat from the skin cools the body.

Explanation

The main idea in Darwin's Theory of "Origin of Species by Natural Selection" is that evolution occurs through gradual accumulation of adaptation through successive generations. 

Darwin's theory posits that species evolve through a process where individuals with advantageous traits for their environment are more likely to survive and reproduce, passing on these beneficial traits to their offspring, leading to gradual changes in the population. 

Explanation

The key feature of RNA are ribose and uracil. 

RNA is differentiated from DNA by having ribose as its sugar molecule and uracil as its nitrogenous base instead of deoxyribose and thymine respectively. 

Explanation

A biome is a community of both plants and animals that occupy a specific habitat and are adapted to a particular climate and geography.

Biomes can be terrestrial (land-based), freshwater, or marine (ocean-based), and they can vary in size from small to global.

Biomes are composed of:

• Plants (flora)
• Animals (fauna)
• Microorganisms (such as bacteria and fungi)
• Physical environment (climate, soil, water, etc.)