Plants & Humans
Plants and humans are essential for each other, both need each other’s help to live on planet Earth. Plant organelles are similar in composition and function to those of animals. The cell wall of plants is made up of cellulose, which also comprises the primary structural components of human cells.
Cellulose, a carbohydrate with many glucose units linked in long chains, is the most abundant organic compound on earth; because it provides structure and protection for plants, it is also a major component of wood and paper. Plants store sugars in the form of starch. Other organic molecules found in plants include proteins, lipids, alkaloids, and various vitamins.
The major difference between Plants and Humans:
Like animals, plants obtain energy through cellular respiration where glucose reacts with oxygen to release chemical energy. Plants take up carbon dioxide from their surroundings, which is used as an energy source during photosynthesis. Plants also release oxygen into the environment during this process; all living organisms require oxygen to survive and contribute to a balanced ecosystem.
Plants that are eaten by animals may become part of their diet, thus enabling nutrients and molecules from plants to be transferred to animal tissues. Humans obtain much of their food energy from eating plants. Plants also help to clean the environment by removing pollutants through photosynthesis. Plants utilize some of the nutrients and minerals in the soil, while others remain in plant tissues after cells die; these chemicals may then be taken up by animals and ingested. Plants also have nervous systems that allow them to detect environmental stimuli.
Plants and animals share many characteristics, but they also have unique structures that enable them to function differently. Plants do not move from place to place; instead, they are immobile or sessile. Plants can reproduce asexually by forming specialized parts such as roots and tubers that create new organisms containing the same genetic material. Plants cannot digest most compounds consumed by humans and other animals; instead, they rely on gut bacteria to break down food molecules. Plants also lack an immune system, which is important for killing foreign cells in animal bodies. Plants are generally immobile as they cannot sense stimuli and move away from harmful areas.
Humans require oxygen to breathe and ingest nutrients that aid in cellular functions. However, humans also require food to provide their bodies with the energy and nutrients necessary for bodily functions such as growth, reproduction, and movement.
Humans digest all types of food, not just plants. Humans also have a highly-developed immune system that helps to ensure the survival of the species by helping to fight harmful infections and diseases. Plants do not have neurons or brains; instead, they rely on hormones and other molecules for communication. Plants can sense and respond to their environment through a process known as tropism, which also helps them sense when to move water and minerals from the soil up to their leaves. Plants are sessile; they cannot move from place to place.
Plants can reproduce asexually, while humans reproduce sexually. Plants have a much slower metabolism than human beings due to the lack of mitochondria in cells that aid in cellular respiration. Plants do not have brains or nervous systems, whereas human beings do. Plants cannot sense stimuli and move away from harmful areas as a response to pain, unlike humans who can.
Plants require water and minerals from the soil to survive; however, they are incapable of transporting these nutrients alone through their roots and stems into different parts of the plant. Plants do not have many of the abilities that humans have, such as complex systems and processes for survival. Plants breathe in carbon dioxide and release oxygen through a process called photosynthesis, while animals breathe oxygen and release carbon dioxide during cellular respiration. Plants are immobile and cannot move from place to place due to lack of locomotion; this immobility contributes to their survival. Plants are also sessile, meaning that they do not move from place to place.
The conclusion of this article was to highlight the differences between humans and plants to show that they are similar but very different at the same time.
The conclusion about how both organisms function is true, however, an extension could discuss how these similarities can be linked. They have similar components and structures but they perform different functions. One example of this is the mitochondria that are present in all plant cells, but not animal cells. The mitochondria essentially take sugars from plants during photosynthesis and turn them into energy-rich molecules that the rest of the plant can use. This process happens in almost a similar way in animal cells.