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BIO 230: Biological Diversity Plants, Steve Leavitt, Exam 2 Study Set 2025 Questions and Answers What kind of taxonomic group is the Charaophyceae? - ....ANSWER☑️☑️...Paraphyletic What are typical growth forms of the Charophyceae? Is there any evidence of an evolutionary "progression" in the Charophyceae? Justify your answer. ....ANSWER☑️☑️...-Unicellular, colonial, filamentous, and parenchymatous Yes, the organisms get more "complex" What is the characteristic sexual life cycle in the Charophyceae? ....ANSWER☑️☑️...-oogamous (gametic) What is the growth form typical of Zygnematales? Desmids? - ....ANSWER☑️☑️...Zygnematales: unbranched filamentous and unicellular species Desmids: usually unicellular, some filamentous What is conjugation, and what role does it play in the sexual life cycle of Spirogyra? ....ANSWER☑️☑️...-Contents of conjugation tube are united during sexual reproduction to join contents of two cells What is sporopollenin, where is it found and what is its role in sexual reproduction of Charophyceae? - ....ANSWER☑️☑️...-Protective substance is the most resistant biopolymer known FOR STUDY PURPOSES ONLY ©️ 2025 ALL RIGHTS RESERVED 1