Multiple Choice
Which of the following best describes how molecular clocks are used to measure evolutionary time in organic chemistry?
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
Which gymnosperm is an example of a cycad?
A
Sequoia sempervirens
B
Pinus radiata
C
Cycas revoluta
D
Ginkgo biloba
Verified step by step guidance1
Understand the classification of gymnosperms: Gymnosperms are a group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes.
Identify the characteristics of cycads: Cycads are seed plants with a long fossil history that were formerly more abundant and more diverse than they are today. They typically have a stout and woody trunk with a crown of large, hard, and stiff, evergreen leaves.
Recognize the examples of cycads: The most commonly known cycad is Cycas revoluta, also known as the sago palm, which is not a true palm but a cycad.
Differentiate between the given options: Sequoia sempervirens and Pinus radiata are conifers, which are another group of gymnosperms, while Ginkgo biloba is the only living species in the division Ginkgophyta.
Conclude that Cycas revoluta is the correct example of a cycad among the given options, as it fits the characteristics and classification of cycads.
2:18mWatch 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