Diversity in Living Organisms

Regulators are those animals that can regulate their body temperature by their own, according to the environment and their need while conformers are those animals that cannot regulate their body temperature and require sun to increase their body temperature. The conformers are also called cold-blooded animals. Some of the examples of conformers are desert lizards, fishes, snakes etc.

• The main difference between animals and humans is the brain.
• The main function of the brain is to think and to decide what is right and what is wrong. 
• This is the only difference by which humans can think and take decisions.
  Hence, the correct answer is C.

• BMI takes into account both height and weight but not body composition.
• Body mass index (BMI) is a common tool for deciding whether a person has an appropriate body weight.
•  Human height and weight varies greatly between individuals and across populations for a variety of complex biological, genetic, and environmental factors, among others and can be same across the population sometimes. Hence, Height and Weight are human features that can be the same.

Recent research into the evolutionary origin of peroxisomes suggests they may have evolved from an endosymbiotic relationship with actinobacteria.

A.An organism is an individual living thing. It can be as simple as a single-celled Amoeba or it can be as complex as a human being.
B.A tissue is a collection of structurally similar cells acting together to perform a specific function.
C.An organelle is a small constituent of a cell that has a specific function. For example, mitochondria (called as powerhouse of the cell) aids in generating energy for cell functions.
D.An organ is a group of tissues that performs a specific function. For example, stomach and kidney are organs. 

Heterodont teeth and different types of vertebrates are examples of homologous structures. The structure which are different in appearance and perform different functions but have similar structure and developmental origin are called homologous organs.

The small black birds found on Galapagos islands, which later came to be known as Darwin's finches were originally adapted with seed-eating features. From these many other forms evolved with altered beaks depending on the food habit. This enabled them to become insectivorous and vegetarian finches.

According to Darwin theory, there is both long and short neck giraffe due variation in the population. when there is a shortage of short tree leaves, short neck giraffe died and long neck giraffe survive.

Male lions are distinctively characterized by their large manes, which females lack. Other physical traits like fur color or tail length are not primary sexual dimorphic indicators.

The taiga (boreal forest) has harsh winters with deep snow. Animals like snowshoe hares and arctic foxes have adaptations including seasonal color change from brown/gray in summer to white in winter for camouflage against snow, helping them avoid predators and hunt more effectively.

Desert animals are often nocturnal, meaning they are active at night to avoid the intense heat of the day, which helps them conserve water and stay cool.

Burrowing is a common adaptation for tundra animals to escape the extreme cold and wind of the surface environment during the winter.

The cell is the basic structural, functional, and biological unit of all known living organisms.