Multiple Choice
Which of the following characteristics supports the argument that viruses are nonliving?
497
views
1. A Review of General Chemistry
Intro to Organic Chemistry
Struggling with Organic Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In which of the following geological periods did gymnosperms dominate the landscape?
A
Triassic
B
Cretaceous
C
Permian
D
Carboniferous
Verified step by step guidance1
Understand the context: Gymnosperms are a group of seed-producing plants that include conifers, cycads, Ginkgo, and gnetophytes. They were among the first seed plants to appear on Earth.
Review the geological time scale: The geological time scale is divided into several periods, each characterized by different climatic conditions and dominant life forms.
Identify the periods in question: The periods mentioned are Triassic, Cretaceous, Permian, and Carboniferous. Each of these periods has distinct characteristics and dominant plant life.
Consider the evolution of plant life: Gymnosperms first appeared in the late Carboniferous period but became more dominant in the Permian period due to the drier climate, which favored seed plants over spore-producing plants like ferns.
Conclude with the correct period: Based on the evolutionary history and climatic conditions, gymnosperms dominated the landscape during the Permian period.
2:08mWatch next
Master Organic molecules in your everyday life. with a bite sized video explanation from Johnny
Start learningRelated Videos
Related Practice
Intro to Organic Chemistry practice set
Problem sets built by lead tutorsExpert video explanations