Answer:
The transport system in animals is more complex than in plants due to several reasons:
Specialized Circulatory System: Animals have a well-developed circulatory system, which includes a heart, blood vessels, and blood. This system is responsible for transporting oxygen, nutrients, hormones, and other vital substances throughout the body. In contrast, plants primarily rely on passive transport mechanisms, such as diffusion and osmosis, to move water, minerals, and nutrients through their tissues.
Active Movement: Animals can move from one location to another, which requires a more efficient and rapid transport system. They need to distribute oxygen and nutrients to their cells to support energy production and remove waste products like carbon dioxide. The complexity of animal bodies, including tissues, organs, and systems, necessitates a specialized transport system to deliver essential substances to all parts of the organism.
Increased Metabolic Demands: Animals typically have higher metabolic rates compared to plants. This increased metabolic activity generates more waste products that need to be eliminated. Animals also require a continuous supply of oxygen for respiration, which necessitates an efficient transport system to deliver oxygen to their tissues. Additionally, animals need to regulate their body temperature, which requires the distribution of heat throughout the body.
Specialized Organs and Tissues: Animals have specialized organs and tissues that perform specific functions, such as the lungs for gas exchange, the digestive system for nutrient absorption, and the kidneys for waste removal. These organs require a well-developed transport system to supply them with the necessary substances and remove waste products efficiently.
Rapid Response to Environmental Changes: Animals often need to respond quickly to changes in their environment, such as predators, prey, or changing resource availability. A complex transport system allows for rapid circulation of signals, hormones, and nutrients to enable swift responses to external stimuli.
Blood Cell Specialization: Animals have specialized blood cells, such as red blood cells for oxygen transport and white blood cells for immune response. These cells require a circulatory system to transport them to the appropriate sites within the body, where they perform their functions.
Step-by-step explanation: