Evolution - Online Test
Q1. Which of the following is an example of divergent evolution?
Answer : Option A
Explaination / Solution:
In divergent evolution, same structure developed along different directions due to adaptation to different needs. Homologous organs are those organs that have common origin but performing different functions.
Q2. Darwin judged the fitness of an individual by
Answer : Option C
Explaination / Solution:
Darwin judged the fitness of an individual by number of offspring the individual produce in particular niche. More the viable offspring formed the more fit the organism in that surrounding.
Q3. According to De Vries theory, evolution is
Answer : Option A
Explaination / Solution:
According to De Vries theory of evolution, the evolution is jerky and discontinuous as the variation due to mutation do not occurs continually. Mutation is sudden change in gene of organism.
Q4. Lamarck theory of organic evolution is usually known as
Answer : Option B
Explaination / Solution:
Lamarck theory of organic evolution is also known as inheritance of acquired traits. He believed that the character an individual gain in his life time is also passed to next generation.
Q5. The theory of use and disuse was given by
Answer : Option D
Explaination / Solution:
The theory of use and disuse was given by Lamarck. In his theory of organic evolution he stressed that those traits or organs are used more evolve faster and those are not used degenerate in course of time.
Q6. Evolution and natural selection is demonstrated by
Answer : Option C
Explaination / Solution:
Evolution and natural selection can be demonstrated by DDT resistance in Mosquito. Earlier, mosquitoes are not resistance to DDT. They get killed due to presence of DDT but later on more DDT is used and due to natural selection mosquito become resistant to DDT.
Q7. Lichen can be used as industrial pollution indicators because
Answer : Option C
Explaination / Solution:
The hardy lichens are useful bioindicators for air pollution, espeially sulfur dioxide pollution, since they derive their water and essential nutrients mainly from the atmosphere rather than from the soil. It also helps that they are able to react to air pollutants all year round. Lichens are symbiotic association between algae and fungi.
Q8. The process of evolution of different species in a given geographical area starting from a point and radiating to other geographical area is called
Answer : Option B
Explaination / Solution:
In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, creates new challenges, or opens new environmental niches.
Q9. The process of evolution of different species in a given geographical area starting from a point and radiating to other geographical area is called
Answer : Option A
Explaination / Solution:
In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, creates new challenges, or opens new environmental niches.
Q10. According to Darwin, evolution is
Answer : Option B
Explaination / Solution:
According to Charles Darwin, evolution is a very slow and gradual process. He believed that evolution took place over a very long period of time. When we talk about time period in evolution we usually refer to billions of years. The generation of a species from another takes a long period of time. It is a very steady process as the changes and adaptation take long time to stabilise and give rise to a new species.
