BIOLOGY 1104, Carleton University 2024 STUDY QUESTIONS AND ANSWERS
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Course
BIOLOGY 1104
Institution
Carleton University (CU
)
What are stromatolites? - rocks formed by the accumulation of sedimentary layers on bacterial mats
What are stromatolites? - rocks formed by the accumulation of sedimentary layers on bacterial mats
When was the oxygen revolution? - 2.7-2.3 bya
Oldest Eukaryotes - 1.8 billion years ago
O...
BIOLOGY 1104, Carleton University 2024
STUDY QUESTIONS AND ANSWERS
What are stromatolites? - rocks formed by the accumulation of sedimentary layers
on bacterial mats
What are stromatolites? - rocks formed by the accumulation of sedimentary layers
on bacterial mats
When was the oxygen revolution? - 2.7-2.3 bya
Oldest Eukaryotes - 1.8 billion years ago
Oldest fossil of a multicellular eukaryote - 1.6 billion years ago
What is a protist? - polyphyletic group of unicellular eukaryotes
when was the earliest direct evidence of life, and where was it found? - 3.5 billion
years ago, in stromatolites
when was the Ediacaran biota - 600-535 million years ago
What and when was the Cambrian explosion? - -A 20 million year period of
dramatic diversification in life
-535-525 million years ago
bilaterians have: - symmetric form
digestive tract
one way digestive system
Vertebrates have: - backbone
When did vertebrates first invade land? - 365 million years ago
when did plants and animals come on land - 500 million years ago
land plants evolved from - algae
, types of vascular plants - ferns
horsetales
whisk ferns
What is a gymosperm - "naked seed" plant
Angiosperms - flowering plants
when did animals move to land? - 460 million years ago
Arthropods are - First land animals
Tetrapods are - the only land vertebrates and are
lobe finned fish that evolved to live on land
Devonians extinction happened ________ because of ________. - 359 million
years ago
the success of trees on land
oldest placental mammals - 160 million years ago
K-Pg Extinction - Cretaceous-Paleogene extinction event 65.5 million years ago.
Killed off the dinosaurs. Caused by a giant meteor impact. Allowed mammals to
become dominant life form on earth.
Primates - originated after the K-PG extinction
oldest fossils of Homo Sapiens appeared in Africa - 195,000 years ago
Oldest fossil of Homo Sapiens outside Africa - 115,000 years ago
Humans are: - Apes with largest brains and bipedal locomotion
types of apes - Gibbons, orangutans, gorillas, chimps, and bonobos.
Hominins (age, location and closest relation) - 6-7 million years ago
africa
humans and chimps
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