Questions on Late Precambrian
Late Precambrian Multiple-Choice Questions
1. The Late Precambrian period is also known as the:
A) Cambrian Period
B) Proterozoic Eon
C) Ediacaran Period
D) Archean Eon
E) Silurian Period
2. Which of the following is a hallmark of the Late Precambrian?
A) First land plants
B) Appearance of multicellular life
C) Formation of Pangaea
D) First vertebrates
E) Mass extinction of dinosaurs
3. The Ediacaran biota, characteristic of the Late Precambrian, consisted mainly of:
A) Small mammals
B) Simple multicellular organisms
C) Large land reptiles
D) Fish with jaws
E) Flowering plants
4. Which supercontinent existed during the Late Precambrian?
A) Laurasia
B) Gondwana
C) Rodinia
D) Pangaea
E) Eurasia
5. The Late Precambrian ended approximately how many million years ago?
A) 541 million years ago
B) 250 million years ago
C) 65 million years ago
D) 1 billion years ago
E) 2.5 billion years ago
6. What major event is associated with the Late Precambrian?
A) Cambrian Explosion
B) Permian Extinction
C) Oxygenation of the atmosphere
D) Formation of the Moon
E) First amphibians on land
7. The first known large, complex fossils appeared in which period?
A) Jurassic
B) Cambrian
C) Ediacaran
D) Ordovician
E) Devonian
8. Which gas saw a significant increase during the Late Precambrian, enabling complex life?
A) Carbon dioxide
B) Oxygen
C) Methane
D) Nitrogen
E) Helium
9. The Late Precambrian environment was predominantly:
A) Terrestrial deserts
B) Oceans and shallow seas
C) Dense forests
D) Glaciers and ice sheets
E) Volcanic islands
10. Stromatolites, important fossils from the Precambrian, are:
A) Fossilized plants
B) Layered structures created by cyanobacteria
C) Early fish fossils
D) Mineral deposits from volcanoes
E) Tracks of early animals
11. What is the significance of the Late Precambrian in evolutionary history?
A) First appearance of dinosaurs
B) Origin of complex multicellular organisms
C) Development of feathers
D) First mammals evolved
E) First land plants appeared
12. Which of the following best describes the climate during the Late Precambrian?
A) Stable and warm
B) Periods of global glaciation
C) Tropical and humid
D) Dry and desert-like
E) Constant volcanic activity
13. What is "Snowball Earth"?
A) A theory of a global ice age during the Late Precambrian
B) A type of fossil organism
C) The formation of glaciers on Mars
D) A volcanic eruption in the Precambrian
E) The name of the first supercontinent
14. Which of these organisms is NOT associated with the Late Precambrian?
A) Dickinsonia
B) Trilobites
C) Charnia
D) Spriggina
E) Kimberella
15. The Late Precambrian is critical for understanding the origin of:
A) Mammals
B) Photosynthesis
C) Eukaryotic cells
D) Dinosaurs
E) Birds
16. The increase in oxygen during the Late Precambrian was primarily due to:
A) Volcanic eruptions
B) Photosynthetic microorganisms
C) Combustion of fossil fuels
D) Meteorite impacts
E) Decomposition of plants
17. Which eon does the Late Precambrian belong to?
A) Phanerozoic
B) Archean
C) Proterozoic
D) Paleozoic
E) Mesozoic
18. The fossil record of the Late Precambrian is:
A) Very rich and diverse
B) Primarily trace fossils and soft-bodied organisms
C) Mostly terrestrial
D) Dominated by vertebrates
E) Lacking any form of life
19. The first animals with bilateral symmetry appeared in the:
A) Late Precambrian
B) Jurassic
C) Cambrian
D) Devonian
E) Silurian
20. Which geological evidence supports the existence of the Late Precambrian glaciations?
A) Fossilized trees
B) Glacial tillites and dropstones
C) Volcanic ash layers
D) Coral reefs
E) Dinosaur bones
Questions on Eukaryote Evolution
Questions on Formation of Earth – First Cell
Questions on Formation of Earth – First Organic Molecules
Answers:
1. C
2. B
3. B
4. C
5. A
6. A
7. C
8. B
9. B
10. B
11. B
12. B
13. A
14. B
15. C
16. B
17. C
18. B
19. A
20. B
Dive into the groundbreaking science of neurotransmitters—your brain’s invisible architects—in Chemical Harmony: How Neurotransmitters Shape Our Lives (2025). This meticulously researched book reveals how serotonin, dopamine, GABA, and other brain chemicals silently orchestrate every aspect of your existence, from decision-making and relationships to mental health and emotional resilience.Click here to buy
👉 +3000 Biology Questions with Answers Key.
Share Online!
