If you go back in the history approx. 45...

If you go back in the history approx. 4500 million years back when atmosphere was reducing the organism were

Autotroph, aerobic

chemo-autotroph, anaerobic

Chemo-heterotroph, anaerobic

Heterotroph, anaerobic

Text Solution

Verified by Experts

The correct Answer is:

The first living organisms developed in reducing atmosphere were chemo-heterotrophs as they requried ready-made organic materials as food and anaerobes as they were capable of respiration in the absence of oxygen.

Topper's Solved these Questions

COMMON HUMAN DISEASES
ERRORLESS |Exercise Common Human Diseases|182 Videos
HEALTH AND DISEASE
ERRORLESS |Exercise Health And Disease|122 Videos

Similar Questions

Explore conceptually related problems

Presence of a single supercontinent on earth some 250 million years back was proposed by

75% of the Solar Energy reaching Earth is absorbed by earth's surface which increases its temperature.The reat of heat rediates back to the atmosphere. Some of the heat is trapped by gases such as CO_(2), CH_(4), O_(3), CFCS present in atmosphere. They add to the heating of atmosphere which causes 'Global Warming'. Answer the following questions on the basis of above paragraph : (i)What is Green House effect ? (ii)What can we do to reduce the rate of Global Warming ?

When a tan stasrts, the head of a standing passenger seems to be pushed backward. Analyse the situation from the ground frame. Does it really go backward? Coming back to the train frame, how do you explain the backward movement of the head on the basis of Newton's laws?

Two moles of a certain ideal gas at 300K were cooled at constant volume so that the pressure was reduced to half t he initial value. Then, as a result of heating at constant pressure, the gas expanded till its temperature got back ot the initial value. Find the total amount of heat absorbed by the gas in the process.

Two moles of a certain gas at a temperature T_0=300K were cooled isochorically so that the pressure of the gas got reduced 2 times. Then as a result of isobaric process, the gas is allowed to expand till its temperature got back to the initial value. Find the total amount of heat absorbed by gas in this process.

ERRORLESS -EVOLUTION-Evolution

Variations during mutations of meiotic recombinations are
Text Solution
|
The 2000 year old seed excavated from King Herod's place at dead sea b...
Text Solution
|
If you go back in the history approx. 4500 million years back when atm...
Text Solution
|
The ancestors of modern day Frogs and Salamanders are
Text Solution
|
Following are the statements regarding the origin of life (A) The ea...
Text Solution
|
Given below are four statements (A-D) each with onw or two blanks. Sel...
Text Solution
|
A species that contains two or more sub-species are called
Text Solution
|
Animals living in colder region have shorter tail and ears as compared...
Text Solution
|
The characters such as pointed elongated snout, strong and stout forel...
Text Solution
|
Trilobites were evolved during which of the following period
Text Solution
|
Which one of the following evidences does not favour the Lamarckian co...
Text Solution
|
'In different races, there may be difference in culture and ways of li...
Text Solution
|
Present day mammals have their predecessor in
Text Solution
|
Adaptation of a species is its
Text Solution
|
Which one of the following sequence was proposed by Darwin and Wallace...
Text Solution
|
In the developmental history of mammalian heart, it is observed that i...
Text Solution
|
Organisms which obtain energy by the oxidation of reduced inorganic co...
Text Solution
|
Some of the important evidences of organic evolution are
Text Solution
|
Flagella of prokaryotic and eukaryotic cells differ in
Text Solution
|
Indicate the completely correct statement about human races
Text Solution
|