Evolution of Life deals with the historical processes, genetic mutations, and natural selection mechanisms that led to the diverse forms of life on Earth.
Correct Answer:
(A) Blue-green algae
Blue-green algae is the oldest organism on earth. They obtain their energy through photosynthesis. They are also known as Cyanobacteria. By producing gaseous oxygen as a by-product of photosynthesis, they played a greater role in dramatically changing life forms on earth by stimulating biodiversity.
Ques: 2
Darwin's theory of natural selection is based on –
Correct Answer:
(D)
All of the above
Charles Robert Darwin was an English geologist and best known for his contribution to evolution theory. Darwin published his theory of evolution in his book 'On the Origin of Species" in 1859. It states that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive and reproduce. It is called Darwinian theory.
Ques: 3
Who explained first the evolution of life?
Correct Answer:
(D)
Lamarck
French biologist Lamarck is best known for his "Theory of Inheritance of Acquired Characters", first presented in 1801. He was the first person to explain the theory of evolution to the public. In 1809, this theory was published in his book 'Philosphie Zoologique'.
Ques: 4
Match List-I with List-II and select the correct answer using the codes given below/the lists:
List-I List-II
A. Theory of mutation 1. Beadle and Tatum
B. Theory of evolution 2. Jacob and Monod
C. One gene one enzyme 3. Darwin hypothesis
D. Operon concept 4. De Vries
Code:
A B C D
Correct Answer:
(B) 4 3 1 2
Theory of mutation - De Vries
Theory of evolution - Darwin
One gene one enzyme hypothesis - Beadle and Tatum
Operon concept- Jacob and Monod
Ques: 5
The main factor of evolution is –
Correct Answer:
(D)
Natural selection
According to Darwin's theory of evolution, natural selection is one of the basic Mechanism of evolution.