Which group of organisms is believed to be evolved first on earth?
Arthropods
Coelenterates
Protozoans
Reptiles
Related Questions
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
They could maintain an internal environment different from their surroundings
They were able to grow in size by taking up material from the surroundings
They showed budding or splitting to give rise to similar smaller structures
They had a defined, organized, and heritable mechanism of reproduction
The first life on earth consists of
Single-celled prokaryotes (bacteria and archaea)
Multicellular eukaryotes (plants and animals)
Viruses
Complex proteins
According to the heterotroph hypothesis, the first life on the earth was able to
Synthesis its food from inorganic compounds
Feed upon carbohydrates produced by autotrophs
Feed upon available nutrients in the environment
Carry on photosynthesis instead of respiration
Given below some major events in the early history of life
I. First heterotrophic prokaryotes
II. First eukaryotes
III. First autotrophic prokaryotes
IV. First animals
Choose the correct sequence of these evolutionary events
IV, III, II, I
I, III, II, IV
I, II, III, IV
IV, I, II, III
Which of the following is NOT a key characteristic of the first living organisms?
Unicellular
Prokaryotic
Anaerobic
Multicellular
