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Zorluk: ZorEvolutionary Trends in Plants and Animal Systems

During the evolutionary transition of organisms from primitive aquatic forms to advanced terrestrial lineages, structural innovations arose across both plant and animal body systems. Which of the following statements correctly identifies true evolutionary advancements in plant transport systems and vertebrate circulatory configurations?

  1. Pteridophytes possess true vascular tissues for water and nutrient transport, while adult amphibians represent the first vertebrate group with a three-chambered heart.Cevap
  2. B
    Bryophytes possess true xylem vessel elements to transport water upward, while reptiles evolved a completely divided four-chambered heart to separate oxygenated and deoxygenated blood.
  3. C
    Gymnosperms produce seeds enclosed within protective ovary walls, while amphibians rely on flame cells as their primary excretory organ for osmoregulation.
  4. D
    Annelids excrete nitrogenous waste via Malpighian tubules, while teleost fish possess a three-chambered heart consisting of two atria and one ventricle.

Cevap

Pteridophytes possess true vascular tissues for water and nutrient transport, while adult amphibians represent the first vertebrate group with a three-chambered heart.
The correct response correctly identifies two key evolutionary innovations: pteridophytes being the first plant phylum with true vascular tissues (xylem and phloem) for terrestrial transport, and adult amphibians being the first vertebrate class to possess a three-chambered heart to support double circulation.

Adım Adım Çözüm

1
Evaluate evolutionary milestones in plant transport systems
Pteridophytes (ferns and fern allies) are the earliest plant group with true vascular tissues (xylem and phloem), whereas Bryophytes (mosses and liverworts) lack vascular tissues.
Vascular tissue allowed plants to transport water and nutrients efficiently over greater heights on land.
2
Evaluate evolutionary milestones in vertebrate circulatory systems
Fish have a 2-chambered heart, adult amphibians evolved a 3-chambered heart (2 atria, 1 ventricle), non-avian reptiles have an incompletely divided 3-chambered heart, and birds/mammals have a 4-chambered heart.
The 3-chambered heart in amphibians represents the first transition from single circulation to double circulation.
3
Compare candidates against physiological facts
The statement pairing pteridophyte vascularity with the amphibian three-chambered heart is accurate across both plant and animal lineages.
All other options contain misattributions of anatomical features to incorrect phyla or classes.

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Evolutionary Trends in Plant Vascularity and Vertebrate Heart Structure
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Evolutionary Trends in Plants and Animal Systems

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