EASY
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Coacervates were experimentally produced by

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Important Questions on Evolution

MEDIUM
Following are the two statements regarding the origin of life:

(i) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.

(ii) The first autotrophic organisms were the chemoautotrophs that never released oxygen.

Of the above statements which one of the following options is correct?
EASY
Which was not present freely in the early atmosphere of the earth?
MEDIUM
Which of the following is not a property of coacervates?
EASY
Which of these statements is true regarding coacervates?
EASY
Which one of the following is incorrect about the characteristic of protobionts as envisaged in abiogenic origin of life?
EASY
Haeckel's biogenetic law or recapitulation theory states that
EASY
The _____ of natural resources can occur, not just by the action of pollutants but also by improper resource utilisation practices.
EASY
Which one of the following is incorrect about the characteristics of protobionts (coacervates) as envisaged in the abiogenic origin of life?
EASY
The process that changed the atmosphere of the earth and resulted in diversities in evolution of life was:
EASY
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
EASY
The earliest organisms to appear on earth were
MEDIUM
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
MEDIUM
Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution?
i. Lower groups of organisms have simpler body design.
ii. Asexual reproduction is common in lower groups.
iii. Asexual reproduction is common in higher groups of organisms.
iv. The high incidence of sexual reproduction in angiosperms and vertebrates.
Choose the correct answer from the options given below:
EASY
The reasons for conserving _____ are narrowly utilitarian, broadly utilitarian and ethical.
MEDIUM
In evolution, the studies can be made at molecular level. For example the proteins present in the blood of man and ape are similar. The base sequence in nucleic acids and amino acid sequence in proteins in related organisms are alike. These are the examples which are specifically referred to in
MEDIUM
Consider following statements regarding microspheres.
(i) They were spherical in shape and 1-2 μm in diameter.
(ii) They had concentric double-layered boundaries.
(iii) They could grow in size but were not able to reproduce.
(iv) They used ATP as source of energy.
Which of the above statements is/are incorrect?