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Multiple Choice
Evidence that mycorrhizae, the mutualistic relationship between plants and fungi, existed from the beginning of the colonization of land comes from _____.
A
molecular clock studies
B
comparisons of DNA sequences
C
phylogenetics
D
microsporidia
E
fossils
Verified step by step guidance
1
Step 1: Understand the concept of mycorrhizae, which is a mutualistic relationship between fungi and plant roots, aiding in nutrient exchange and absorption.
Step 2: Recognize that the question is asking for evidence of the existence of mycorrhizae during the early colonization of land by plants.
Step 3: Consider the types of evidence that can provide historical insights into biological relationships, such as molecular clock studies, DNA sequence comparisons, phylogenetics, and fossils.
Step 4: Evaluate each option: Molecular clock studies estimate the timing of evolutionary events, DNA sequence comparisons can show genetic similarities, phylogenetics can illustrate evolutionary relationships, and fossils provide physical evidence of past organisms.
Step 5: Conclude that fossils are direct evidence of ancient life forms and their interactions, making them the most concrete evidence of mycorrhizae existing from the beginning of land colonization.