Why does it is said that looking at stars on a clear night sky means looking back in time?

1. What we are seeing at that time is actually has stated its journey millions of years back
2. What we are seeing at that time is actually has stated its journey trillions of days back
3. What we are seeing at that time is actually has stated its journey thousands of days back
4. What we are seeing at that time is actually has stated its journey thousands of kilometers away
Subtopic:  Cosmic Evolution |
 80%
From NCERT
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Which of the following statements are not true?

1. The origin of life is considered a unique event in the history of universe.
2. Earth is just a speck.
3. Universe is almost 20 million years old
4. Galaxies contain stars and clouds of gas and dust
Subtopic:  Cosmic Evolution |
 81%
From NCERT
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Mark the incorrect statement with respect to evolution

1. When we see objects in our immediate surroundings we see them instantly and hence in the present time
2. When we look at stars on a clear night sky we are, looking back in time 
3. Stellar distances are measured in kilometers 
4. Huge clusters of galaxies comprise the universe
Subtopic:  Cosmic Evolution |
 84%
From NCERT
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Given below are some stages of human evolution. Arrange them in the correct sequence (Past to Recent):
A. Homo habilis
B. Homo sapiens 
C. Homo neanderthalensis
D. Homo erectus 
Choose the correct sequence of human evolution from the options given below :
1. B-A-D-C
2. C-B-D-A
3. A-D-C-B
4. D-A-C-B
Subtopic:  Evolution of Homo Sapiens |
 79%
From NCERT
NEET - 2024
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Which one of the following factors will not affect the Hardy-Weinberg equilibrium?
1. Genetic drift
2. Gene migration
3. Constant gene pool
4. Genetic recombination
Subtopic:  Hardy Weinberg Law: 1 |
 79%
From NCERT
NEET - 2024
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The flippers of the Penguins and Dolphins are the example of:
1. Natural selection 
2. Convergent evolution 
3. Divergent evolution 
4. Adaptive radiation 
Subtopic:  Biological Evolution |
 76%
From NCERT
NEET - 2024
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Match List I with List II: 
List I List II
A. Mesozoic Era I. Lower invertebrates
B.  Proterozoic Era II. Fish & Amphibia 
C. Cenozoic Era III. Birds & Reptiles
D. Paleozoic Era IV. Mammals

Choose the correct answer from the options given below: 
1. A-III, B-I, C-II, D-IV
2. A-I, B-II, C-IV, D-III
3. A-III, B-I, C-IV, D-II
4. A-II, B-I, C-III, D-IV
Subtopic:  Biological Evolution |
 58%
From NCERT
NEET - 2024
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The animal coelacanth caught in South Africa is an example of vertebrate transition from: 
1. Fish to Amphibia 
2. Amphibia to Reptilia 
3. Reptilia to Bird 
4. Reptilia to Mammal 
Subtopic:   A BRIEF ACCOUNT OF EVOLUTION |
 70%
From NCERT
NEET - 2024
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Assuming Hardy Weinberg's Principle, in a certain population, the frequencies of three genotype are as follows: 
Genotypes AA Aa aa
Frequency 22% 62% 16%

What is the likely frequency of 'A' and 'a' alleles? 
1. 53% and 47% 
2. 40% and 60% 
3. 50% and 50% 
4. 30% and 70%
Subtopic:  Hardy Weinberg Law |
 60%
From NCERT
NEET - 2024

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Match List-I with List-II:
List-I List-II
A. Gene pool I. Stable within a generation
B. Genetic drift II. Change in gene frequency by chance
C. Genetic flow III. Transfer of genes into or out of population
D. Gene frequency IV. Total number of genes and their alleles
Choose the correct answer from the options given below:
1. A-III,B-II,C-I,D-IV
2. A-IV,B-II,C-III,D-I
3. A-I,B-II,C-III,D-IV
4. A-II,B-III,C-IV,D-I
Subtopic:  Hardy Weinberg Law |
 76%
From NCERT
NEET - 2024
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