Stem of Psilophyton an example of psilogsida is differentiated into an underground rhizome and an aerial part both of which are _________ branched
Correct answer: B. Dichotomously
- A. Isotomous
- B. Dichotomously
- C. Trichotomously
- D. Multichotomously
Explanation
Psilophyton has an underground rhizome and an aerial axis that repeatedly divides into two equal branches, a pattern called dichotomous branching. Isotomous describes equal branching more precisely, so students may choose it, but the standard classification term asked for here is dichotomous.
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