In the evolutionary progression of terrestrial plant life, structural adaptations systematically increased in complexity to overcome the challenges of living on land. Which of the following statements correctly identifies a key evolutionary milestone alongside the plant division in which it first arose?
- The appearance of true vascular tissues (xylem and phloem) for water and nutrient conduction, first arising in pteridophytesCevap
- BThe development of true vascular bundles and lignified roots, first arising in bryophytes
- CThe production of seeds enclosed within protective ovary walls that mature into fruits, first arising in gymnosperms
- DThe specialization of Malpighian tubules as primary excretory structures for water conservation, first arising in annelids
Cevap
The appearance of true vascular tissues (xylem and phloem) for water and nutrient conduction first arose in pteridophytes.
The correct choice accurately identifies pteridophytes (ferns) as the first plant group to evolve true vascular tissue (xylem and phloem). This evolutionary milestone distinguished them from non-vascular bryophytes and allowed for tall, upright growth away from water bodies.
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Anahtar Kavram
Evolutionary trends in plant vascularization and organ system adaptations
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