Ecology and Environment-Organisms and Environment [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Biology]: Questions 4 - 6 of 41
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Question 4
Question MCQ▾
Which of the following changes would be likely to make terrestrial life on this planet impossible?
Choices
Choice (4) | Response | |
---|---|---|
a. | A decrease in mean temperature by 10 degree C. | |
b. | Disappearance of the moon. | |
c. | Change in atmosphere permitting the entire solar radiation reaching the upper atmosphere to penetrate to the surface of the earth. | |
d. | Change in the orbit of the earth from an ellipse to a surface of the earth. |
Question 5
Question MCQ▾
The change of the lighter colored variety of peppered moth Biston betularia to its darker variety (carbonaria) is due to
Choices
Choice (4) | Response | |
---|---|---|
a. | Industrial carbon deposited on the wings of moth resulting in darker variety. | |
b. | Deletion of a segment of gene due to wings of moth resulting in darker variety. | |
c. | Mutation of single Mendelian gene for survival in the smoke-laden industrial environment. | |
d. | Translocation of a block of genes in chromosomes in response to heavy carbons. |
Question 6
Question MCQ▾
If forest area is reduced to half, which one of the following will be a long term effect?
Choices
Choice (4) | Response | |
---|---|---|
a. | The natives (tribals) of that area will die on account of hunger. | |
b. | Cattles of that area will die due to scarcity of fodder. | |
c. | The diversity in germplasm will affect the crop breeding. | |
d. | It will be converted into large desert. |