Chapter 18: Problem 4

Name two advantages of multicellularity for plants and two for animals.

Short Answer

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Multicellular plants benefit from specialized structures, such as roots and leaves for nutrient absorption and photosynthesis, and complex reproductive structures like flowers and seeds for successful reproduction. Multicellular animals benefit from differentiated organs and organ systems that increase efficiency, and protective features like skin and immune systems, as well as a greater range of adaptive behaviors for improved survival and adaptability.

Step by step solution

Definition of Multicellularity

Multicellularity is a biological characteristic where an organism is composed of multiple cells that work together. This allows the organism to develop specialized cells and tissues for various functions, leading to increased complexity and better overall survival capabilities. Now let's explore the advantages for plants and animals separately.

Advantage 1 for Plants: Specialized Structure

In multicellular plants, there is a division of labor among cells, allowing for the development of specialized structures. For instance, roots can be specialized for nutrient and water absorption, while leaves are specialized for photosynthesis and gas exchange. This enables plants to grow taller, accessing more resources and occupying a broader range of environments.

Advantage 2 for Plants: Reproductive Advantages

Multicellularity allows plants to develop complex reproductive structures, such as flowers, spores, and seeds, which aid in successful reproduction. These structures can enhance the plant's ability to attract pollinators or disperse its offspring over a wider geographic range, increasing the likelihood of passing on its genetic material.

Advantage 1 for Animals: Organ System Formation

Multicellular animals develop differentiated organs and organ systems, which can be specialized for specific functions, such as the digestive system for nutrient uptake or the circulatory system for transporting nutrients and oxygen. This allows for increased efficiency and performance in these functions, supporting more complex and larger body structures.

Advantage 2 for Animals: Improved Survival and Adaptability

Multicellularity enables animals to develop protective features such as skin and immune systems that can shield them from potential environmental threats. Additionally, multicellular organisms can possess a greater range of behaviors, enabling them to adapt to new environments and respond more effectively to predators or other challenges to their survival.

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Name two advantages of multicellularity for plants and two for animals.

Short Answer

Step by step solution

Definition of Multicellularity

Advantage 1 for Plants: Specialized Structure

Advantage 2 for Plants: Reproductive Advantages

Advantage 1 for Animals: Organ System Formation

Advantage 2 for Animals: Improved Survival and Adaptability

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