Science Definition Of Life – Easy Definition And 18 Characteristics Of Life Process

Science Definition Of Life | Definition Of Life History | Definition Of Life Biology | Characteristics Of Life Process |

Science Definition Of Life– Numerous different types of plants and animals can be found all over the world. All living things and plants are called living or animate objects because they have life. In order to gain a thorough knowledge of living things, it is necessary to know their shape, nature, and various ways of life. The science that studies the shape, nature, etc. of an organism is called Biological Sciences(science definition of life).

Science Definition Of Life
Definition Of Life biology

The main purpose of biology is to observe and review the structure and functions of organisms. This science seeks to explore a specific working formula by observing, searching, reviewing, etc. on the morphological differences, structural diversity, functional differences, diverse biographies, etc. of the living world. The project is first formed on the basis of all the information of science. If the project is accepted by the scientific community with indirect and direct evidence, it is recognized as a theory.

Science Definition Of Life – Definition Of Life Biology

It is very difficult to define life. Among the definitions given by scientists, two main definitions are given.

1. Life is a special state that expresses the characteristics of growth, reproduction, mutation, evolution, etc.

2. The manifestation of the interaction of living things and the environment is called life.

Characteristics Of Life Process (Science Definition Of Life)

1. Size and shape – Every living thing has its own size and volume. Human beings like Gaeru, Ghaera, Jaba tree, Mango tree, etc. have specific sizes and volumes. Inanimate matter does not have a specific size and volume, for example, water is an inert substance that has no shape and volume in the corners, so it takes the shape of the container in which it is placed. Water hardens into ice, and when heated again evaporates. According to inanimate matter, different forms of the same object do not occur in the case of living things.

2. Presence of protoplasm – Protoplasm is a kind of special complex compound.

Characteristics Of Life Process

Plants or animals — wherever an organism is made up of one or more cells. The protoplasm, usually inside the cell membrane, performs all the physiological functions of the body. That is why protoplasm is called the ‘physical basis of life’. Every living thing has a protoplasm, that is, a living protoplasm is present where the soul is. Dead protoplasm must be collected. So when the protoplasm of the cell dies, the organism becomes inert. However, inert materials such as bricks, wood, stone, soil, etc., never contain protoplasm.

3. Body organization – Each organism is organized according to a specific rule. Since the various organs of the organism are connected to each other, each one performs a specific function, resulting in vitality in the organism. That is, there is a definite division of labor in the organism.

Unicellular organisms (e.g., amoebae) perform all the functions of the body with a single cell. But the primary structural unit of an advanced organism is the cell – which comes together and forms the tissue. Similarly, an organ is made up of a number of homogeneous collars. All kinds of work are done in the organism by the mutual cooperation of the organs. A disciplined unity can be observed in this work. The organs of multicellular organisms can easily adapt to the environment.

4. Irritability – Irritability is the ability of an organism to respond to changes in its external or internal environment.

A stimulus is an innate organism that responds to stimuli. The slightest change in the normal environment outside or inside the organism stimulates the organism and that excitement is manifested in every nook and cranny of the body. This process is called response.

(i) When the plant touches the leaves of the Lajjabati tree, it bends downwards, the stem of the tree goes towards Ala and the root goes in the opposite direction.

(ii) Animals: Many insects are attracted by ala and snails insert their body parts into the hair. Living things respond to the excitement by adapting themselves to the environment. No such reaction is seen in inert matter.

Characteristics Of Life Process

5. Capacity of Adaptability – The ability to adapt to the environment is called adaptation.

Every creature has a small amount of adaptive power. Although the unaccustomed corner is forced to live in a hostile environment, the creature tries to adapt itself to the condition as much as possible by making changes in the body. Although the adverse conditions seem unbearable, it gradually becomes easy and acceptable and the organism adapts to the new environment. Although the environment has changed in the past for this religion (feature), the existence of living beings has not been affected. The root does not have the ability to adapt.

6. Growth– Growth is the change in the size, volume, and dry weight of an organism. Basically, the expansion of the protoplasm of a cell is called growth. When there is more depletion than depletion in the body, new substances accumulate in the protoplasm through assimilation, increasing the volume of the cell. In addition, protoplasm expansion is possible through the continuous division of living cells and the addition of new cells. Root growth is not possible in this way.

7. Movement and Locomotion – Movement is the movement of limbs from a fixed place to movement and the movement of an organism as a whole is called movement. Most organisms can move from one place to another voluntarily, at least through the movement of their limbs. The root does not have the ability to move and move.

8. Metabolism – The chemical reaction that takes place in the protoplasm of a cell is called metabolism as a whole. Metabolism is a major feature of the organism. Metabolism is heterogeneous. There are two main types of metabolism, such as anabolism (Anabolism = Greek; And = above, balloon = throwing and destructive process — Catabolism (Greek, Kata = below, balloon = throwing). In the body, both processes run simultaneously.

Example: The process of digestion is synthesis and the process of digestion is respiration. Metabolism is possible only in the living body, not in the inanimate body.

9. Nutrition – The organism needs food to survive. Organisms do not live without food, so they have to eat regularly. After ingestion of solid or liquid food, it is digested by the digestive system and after digestion, it becomes digestible food juice in the body. Then begins Absorption. Sour food nourishes the body.

That is, food juices are included in the protoplasm and become part of it. This method is called assimilation. Nutrition is a characteristic metabolic process of the organism. Eventually, the excretion of indigestible food occurs.

10. Respiration – The process by which statistical energy is released in the food of the cell as kinetic energy is called respiration. Respiration is a digestive process. Every living cell in the body is always working in a corner. Energy is needed to work. Oxidation of food occurs mainly in contact with oxygen. During respiration, complex organic food is oxidized, converted into carbon dioxide and water, and emits heat. Death is the process of respiration in the body. Inanimate matter does not cause respiration.

Science Definition Of Life

11. Excretion – The special process by which nitrogenous substances harmful to the body are released outside the body is called excretion. During metabolism, various nitrogenous substances (urine, sweat, alkalinity, etc.) are produced in the body. In most cases, the body is damaged if they are not removed from the place of origin in time. Khales Nimorchan is a special excretory method of shrimp. Sweat, carbon dioxide, etc. are also excretory substances. Alkaline substances such as quinine, nicotine, morphine, datura, etc., and excretory substances such as raphide, cystolith, etc. in plants. Excretion is possible only in the body, excretion does not take place in the inanimate body.

12. Secretion – The body produces certain chemicals from special glands. These substances remain in the body and play an important role in various chemical reactions and are directly used by the body. Bile, hormones, enzymes, etc. Peters is excreted from the liver. Hormones are secreted from the endocrine glands or anal glands and enzymes are secreted from the stomach or intestines. Palm or date juice, milk secreted from the mammary glands, etc., but also excreted out of the body. Do not leak from inert matter.

13. Rhythmicity or Periodicity – All the physiological functions of the organism are carried out in a specific rhythm. The rate at which the action rate is higher at first and then gradually decreases and again increases after a certain period of time. This is seen to be more or less rhythmic in stages. Example: The heartbeat is the rhythm of contraction and expansion, the rhythm of contraction and expansion of the lungs. Rhythm is not seen in the corners of inanimate objects.

14. Mutability – Mutability is an important feature in the path of biological evolution. Organisms usually produce similar organisms. But for a variety of reasons, abrupt changes in the chemical organization of the protoplasm can occur. This is called a mutation. Although mutations are harmful in most cases, they do brighten the possibility of new organisms over time. Inert matter does not change.

15. Organic Evolution – Organic expression or evolution has led to the emergence of today’s complex organisms from the primitive organisms of the past. The biological evolution of inanimate objects is not possible.

16. Reproduction – Creating an organism is a very important feature of an organism. Genesis is the ability to create one’s own incomparable organism. Asexual or sexual — no matter how new organisms appear, only living beings have the power to create, not inanimate objects.

17. Definite life-cycle – The life span of an organism is divided into several specific stages. The organism spends its life through that stage of life. In the case of animals, such as childhood, adolescence, youth, old age, etc., there are obvious stages, and in the case of plants, there are almost similar stages. From the seed to the emergence of the baby plant and finally, the mature plant can be seen in the continuous review, so the plants also have a clear life cycle. The life cycle revolves around the cycle of birth and death. There is no life cycle of matter.

18. Senescence and Death – After birth, the organism grows rapidly and gradually loses its efficiency; At last it reaches decay or old age. Then comes a time when biological functions come to a standstill and the organism dies. There is no decay and death of inanimate objects.


Q. Is food science a life science?

A. Life sciences discoveries are helpful in improving the quality and standard of life and have applications in health, agriculture, medicine, and the pharmaceutical and food science industries.

Q. What are the sciences of life?

A. Biology is the study of life. The word “biology” is derived from the Greek words “bios” (meaning life) and “logos” (meaning “study”). In general, biologists study the structure, function, growth, origin, evolution, and distribution of living organisms.

Q. How does life science affect our life?

A. Scientific knowledge can improve the quality of life at many different levels—from the routine workings of our everyday lives to global issues. Science informs public policy and personal decisions on energy, conservation, agriculture, health, transportation, communication, defense, economics, leisure, and exploration.

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