Which of the following is accurate of the relationship between animal body size and metabolism?Question 3Select one:a.Diffusion across the body surface is sufficient to meet metabolic needs in smaller animals with large surface area relative to body volume.b.The need for complex organ systems increases with increased body size.c.All animals have complex organ systems.d.a and be.none of the above
Question
Which of the following is accurate of the relationship between animal body size and metabolism?Question 3Select one:a.Diffusion across the body surface is sufficient to meet metabolic needs in smaller animals with large surface area relative to body volume.b.The need for complex organ systems increases with increased body size.c.All animals have complex organ systems.d.a and be.none of the above
Solution
Para responder a esta pregunta, vamos a analizar cada opción:
a. La difusión a través de la superficie del cuerpo es suficiente para satisfacer las necesidades metabólicas en animales más pequeños con una gran superficie en relación con el volumen del cuerpo.
- Esta afirmación es correcta. En animales pequeños, la relación superficie-volumen es alta, lo que permite que la difusión sea un método eficiente para el intercambio de gases y nutrientes.
b. La necesidad de sistemas de órganos complejos aumenta con el aumento del tamaño del cuerpo.
- Esta afirmación también es correcta. A medida que los animales aumentan de tamaño, la relación superficie-volumen disminuye, y la difusión simple ya no es suficiente para satisfacer las necesidades metabólicas. Por lo tanto, se requieren sistemas de órganos más complejos para el intercambio de gases, la circulación y otros procesos.
c. Todos los animales tienen sistemas de órganos complejos.
- Esta afirmación es incorrecta. No todos los animales tienen sistemas de órganos complejos; los animales más pequeños y simples pueden depender de la difusión para sus necesidades metabólicas.
d. a y b
- Esta opción es correcta porque tanto la afirmación a como la b son precisas.
e. Ninguna de las anteriores
- Esta opción es incorrecta porque ya hemos identificado que las afirmaciones a y b son correctas.
Por lo tanto, la respuesta correcta es:
d. a y b
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