Quiz On Human & Social Biology

Explanation
An habitat refers to a place in which organisms live. It provides the necessary conditions and resources for the survival and reproduction of living organisms. Habitats can vary greatly in terms of climate, vegetation, and other environmental factors, and different organisms are adapted to specific habitats that meet their specific needs. The concept of habitat is crucial in understanding the distribution and abundance of different species in the natural world.

Explanation
The correct answer is "It is a birth giving and breast feeding organism." This answer accurately describes mammals as organisms that give birth to live young and nurse their offspring with milk produced by mammary glands. This distinguishes them from other types of animals that lay eggs or have different methods of reproduction and nourishment for their young.

Explanation
The process of photosynthesis in plants requires sunlight as it is the source of energy for the process. Therefore, plants cannot carry out photosynthesis at night when there is no sunlight available.

Explanation
A plant is indeed a green pigment organism that carries out the process of photosynthesis during the day. Photosynthesis is the process by which plants convert sunlight, carbon dioxide, and water into glucose (sugar) and oxygen, using the green pigment called chlorophyll. This process occurs in the chloroplasts of plant cells and is vital for the plant's growth and survival. Therefore, the statement "A Plant is a green pigment organism that photosynthesis at day" is correct, making the answer true.

Explanation
Calories are a measure of energy. When we consume food, our bodies break down the macronutrients (carbohydrates, proteins, and fats) and convert them into energy. This energy is then used by our bodies for various functions such as metabolism, physical activity, and maintaining body temperature. Therefore, calories are a unit of measurement for the amount of energy that a food provides when consumed.

Explanation
The digestive system is responsible for breaking down food into small molecules that can be used by the body cells. It includes organs such as the mouth, esophagus, stomach, small intestine, and large intestine, as well as accessory organs like the liver and pancreas. These organs work together to mechanically and chemically break down food into nutrients that can be absorbed by the body. Once absorbed, these nutrients are used by the cells for energy, growth, and repair.

Explanation
Blood pressure is the most direct factor that affects blood flow through the circulatory system. Blood pressure refers to the force exerted by the blood against the walls of the blood vessels. It is responsible for propelling the blood throughout the body, ensuring that oxygen and nutrients reach the tissues and organs. Changes in blood pressure can directly impact the rate and efficiency of blood flow, potentially leading to various cardiovascular issues. Therefore, maintaining a healthy blood pressure level is crucial for proper blood circulation and overall cardiovascular health.

Explanation
There are four types of teeth in the human mouth: incisors, canines, premolars, and molars. Each type of tooth has a specific shape and function. Incisors are used for cutting, canines for tearing, premolars for crushing and grinding, and molars for grinding and chewing food.

Explanation
Hydrochloric acid is found in the stomach. It is produced by the cells lining the stomach walls and is responsible for the breakdown of food and the activation of enzymes. Hydrochloric acid helps create an acidic environment in the stomach, which is necessary for the digestion of proteins and the absorption of certain nutrients. It also acts as a barrier against harmful microorganisms that may enter the body through food.

Explanation
During meiosis, a type of cell division that occurs in sexually reproducing organisms, the number of cells produced is four. These cells are called gametes or sex cells. However, only half of these cells are considered "new" because they contain a unique combination of genetic material due to the process of genetic recombination. Therefore, the correct answer is 3, as three out of the four cells produced in meiosis are considered new.