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During biological evolution, the first living organisms were _______

During biological evolution, the first living organisms were _______ Correct Answer Heterotrophs

Heterotrophs were first living organisms to evolve, as they originated among organic molecules and oxygen-free atmosphere. They were anaerobes capable of respiration in the absence of oxygen. They only depended on the existing molecule for their nutrition.

Related Questions

S1: Evolution is not progress.
P: And yet, for all their differences, it is not wholly wrong to identify evolution with progress.
Q: As a noted scientist had said,"the tapeworm in its inglorious lot in man's intestine is an outcome of evolution as well as the lark at heaven's gate."
R: Three hundred million years after the first land creatures crawled out of the sea, the one-called amoeba is man himself.
S: The physical facts of evolution betray such advance.
S6: For, like progress, evolution does, over the long run, imply betterment.

The Proper sequence should be:
S1:Biological evolution has not fitted man to any specific environment.
P :It is by no means a biological evolution, but it is a cultural one.
Q :His imagination, his reason, his emotional subtlety and toughness, makes it possible for him not to accept the environment but to change.
R :And that series of inventions by which man from age by age has reshaped his environment is a different kind of evolution.
S :Among the multitude of animals which scamper, burrow swim around us he is in the only one who is not locked in to his environment.
S6:That brilliant sequence of cultural peaks can most appropriately be termed the ascent of man.

The Proper sequence should be:
Which of the following statements about living and non-living being is/are correct? 1. While living being can demonstrate growth and repair, non-living being cannot. 2. While living being demonstrates metabolic processes, non-living being does not. Select the correct answer using the code given below.
From the point of view of evolution of living organisms, which one of the following is the correct sequence of evolution ?
Consider the following statements regarding evolution and choose the correct answer:
1. Basically, evolution is the result of the differential survival in each generation of the progeny of the individuals with certain special characteristics
2. The organization of genes in chromosomes and the behaviour of these during cell division do not affect the mechanisms of evolution
3. Due to sexual reproduction there is a tremendous increase in variability
4. Differential survival is always partly due to capacity to adopt to the physical environment
When we are considering the evolution of species let us remember that : (a) Evolution is progress. (b) Evolution is the generation of diversity. (c) The older designs are not necessarily inefficient. (d) More and more complex designs emerge.
Which is the correct sequence of evolution of Earth? 1. Loss of Primordial atmosphere 2. Evolution of Lithosphere 3. Process of degassing 4. Evolution of hydrosphere 5. Origin of life Select the correct answer using the code given below:
With reference to primary and secondary succession, consider the following statements: A) Primary succession takes place in areas which have lost all the living organisms that existed there whereas secondary takes place in areas where no living organisms ever existed. B) Rate of secondary succession is much slower compared to primary succession. Which of the statements given above is/are correct?
Beauty of some historical monuments is greatly affected by the growth of certain living organisms. These living organisms belong to which one of the following groups?
Read the passage carefully and select the best answer to each question out of the given four alternatives.
The Amazon basin has been continuously inhabited for at least 10, 000 years, possibly more. Its earliest inhabitants were stone-age peoples, living in hundreds of far-flung tribes, some tiny, others numbering in the tens of thousands. It was from the west that Europeans explorers first arrived. In 1541 a Spanish expedition from Quito, led by Gonzalo Pizarro, ran short of supplies while exploring east of the Andes in what is today Peru. Pizarros cousin Francisco de Orellana offered to take 60 men along with the boats from the expedition and forage for supplies. De Orellana floated down the Rio Napo to its confluence with the Amazon, near Iquitos (Peru), and then to the mouth of the Amazon. Along the way his expedition suffered numerous attacks by Indians; some of the Indian warriors, they reported, were female, like the Amazons of Greek mythology, and thus the worlds greatest river got its name. No one made a serious effort to claim this sweaty territory, however, until the Portuguese built a fort near the mouth of the river at Belém in 1616, and sent Pedro Teixeira up the river to Quito and back between 1637 and 1639. During the 17th and 18th centuries, Portuguese bandeirantes (groups of roaming adventurers) penetrated ever further into the rain forest in pursuit of gold and Indian slaves, exploring as far as present-day Rondônia, and the Guaporé and Madeira river valleys. Amazonian Indians had long used the sap from rubber trees to make waterproof bags and other items. European explorers recognized the potential value of natural latex, but were unable to market it because it tended to grow soft in the heat, or brittle in the cold, and thus had limited appeal outside the rain forest. However, in 1842 American Charles Goodyear developed vulcanization (made natural rubber durable) and in 1890 Irelands John Dunlop patented pneumatic rubber tires. Soon there was an unquenchable demand for rubber in the recently industrialized USA and Europe, and the price of rubber on international markets soared. As profits skyrocketed, so did exploitation of the seringueiros, or rubber tappers, who were lured into the Amazon, mostly from the drought-stricken northeast, by the promise of prosperity only to be locked into a cruel system of virtual slavery dominated by seringalistas (owners of rubber-bearing forests). Rigged scales, hired guns, widespread illiteracy among the rubber tappers, and monopoly of sales and purchases all combined to perpetuate the workers debt and misery. In addition, seringueiros had to contend with jungle fevers, Indian attacks and all manner of deprivation.
From where did the Europeans explorers first arrive?