Podcast
Questions and Answers
What does a cladogram primarily represent?
What does a cladogram primarily represent?
- Geographical distribution of species
- The physical characteristics of different plants
- Evolutionary relationships between organisms (correct)
- The feeding habits of various animal groups
Which of the following is a key evolutionary milestone indicated on the cladogram?
Which of the following is a key evolutionary milestone indicated on the cladogram?
- Development of bioluminescence
- Development of vascular tissue (correct)
- Development of camouflage
- Development of wings for flight
According to the cladogram, from which milestone do roundworms, protista, and monera branch?
According to the cladogram, from which milestone do roundworms, protista, and monera branch?
- Vascular Tissue
- Body cavity (correct)
- Radial symmetry
- Bilateral symmetry
Which group is shown branching off before animals on the cladogram?
Which group is shown branching off before animals on the cladogram?
Which type of symmetry is shown to branch into flatworms??
Which type of symmetry is shown to branch into flatworms??
Flashcards
What is a cladogram?
What is a cladogram?
Diagram showing evolutionary relationships between organisms.
Cone-bearing plants
Cone-bearing plants
Plants with exposed seeds in cones.
Flowering plants
Flowering plants
Plants that produce flowers and seeds enclosed in fruit.
Vascular Tissue
Vascular Tissue
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Fungi
Fungi
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Study Notes
- In Grade 10, the biodiversity of animals is studied.
- In Grade 12, evolution is studied in greater detail.
- Scientists show evolutionary relationships using phylogenetic trees.
- One type of phylogenetic tree is a cladogram.
- Figure 1.2.6 shows part of a cladogram displaying different groups of living organisms.
Cladogram Milestones and Organisms:
- Prokaryote Ancestor is at the base.
- Monera is above the Prokaryote Ancestor.
- Eukaryote milestone is above Monera.
- Protista branches off from the Eukaryote milestone.
- Fungi, Animalia, and Plantae branch off above Protista.
- Sponges, Cnidarians, and Flatworms branch off from Animalia.
- Tissues milestone is above spongers.
- Radial Symmetry milestone is above Cnidarians.
- Bilateral Symmetry milestone is above flatworms.
- Mosses branches off from Plantae.
- Vascular tissue milestone is above mosses.
- Ferns branch off above the vascular tissue milestone.
- Cone-bearing plants and flowering plants branch off above the ferns.
- Seeds milestone is above the ferns.
- Flowers milestone is above the cone bearing plants.
- Body cavity milestone is above flatworms.
- Roundworms branch off from the body cavity milestone.
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Description
Explore evolutionary relationships with cladograms. This lesson focuses on the tree of life, including milestones like prokaryotes, eukaryotes, tissues, and symmetry. Discover how organisms such as Monera, Protista, Fungi, Animalia, and Plantae branch off, illustrating the fascinating path of evolution.
