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Chapters
2: Reproduction in Lower and Higher Animals
3: Inheritance and Variation
4: Molecular Basis of Inheritance
▶ 5: Origin and Evolution of Life
6: Plant Water Relation
7: Plant Growth and Mineral Nutrition
8: Respiration and Circulation
9: Control and Co-ordination
10: Human Health and Diseases
11: Enhancement of Food Production
12: Biotechnology
13: Organisms and Populations
14: Ecosystems and Energy Flow
15: Biodiversity, Conservation and Environmental Issues
![SCERT Maharashtra solutions for Biology [English] 12 Standard HSC chapter 5 - Origin and Evolution of Life - Shaalaa.com](/images/biology-english-12-standard-hsc_6:1b94e35560a844c094a1f846c467d1b4.biology "SCERT Maharashtra solutions for Biology [English] 12 Standard HSC chapter 5 - Origin and Evolution of Life")
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Solutions for Chapter 5: Origin and Evolution of Life
Below listed, you can find solutions for Chapter 5 of Maharashtra State Board SCERT Maharashtra for Biology [English] 12 Standard HSC.
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC 5 Origin and Evolution of Life MCQ
1 Marks
_______ is considered as connecting link between ape and man.
Australopithecus
Homo habilis
Homo erectus
Neanderthal man
1 Marks
Humans are most closely related to ______.
Marsupial
Lemur
Chimpanzees
Tarsier
1 Marks
The proportion of an allele in the gene pool to the total number of alleles at a given locus is called _______.
gene pool
gene frequency
gene flow
genetic drift
1 Marks
Transfer of a part of chromosome or set of genes to a non-homologous chromosome is called ________.
deletion
duplication
inversion
translocation
1 Marks
Any random fluctuation in allele frequency, occurring in the natural population by pure chance is called __________.
gene pool
gene mutation
genetic recombination
genetic drift
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC 5 Origin and Evolution of Life Very short Answer
1 Marks
Define the term ‘Mendelian population’.
1 Marks
Very short answer question.
Define the Gene pool
1 Marks
Very short answer question.
Name the ancestor of human which is described as a man with an ape brain.
1 Marks
Name the ancestor of human nicknamed as Handyman
1 Marks
Whose fossils were discovered at the site of Shivalik hills, India?
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC 5 Origin and Evolution of Life Short Answer 1
2 Marks
Mention any two developments in human which helped him to move around safely on land.
2 Marks
Distinguish New world and old world monkeys based on their tail along with their examples.
2 Marks
What is hybrid sterility?
2 Marks
What led to better utilization of hands for holding objects effectively and better motor skills?
2 Marks
Describe modern man.
2 Marks
Distinguish between Australopithecus and Neanderthal man
2 Marks
Distinguish between Homo erectus and Neanderthal man
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC 5 Origin and Evolution of Life Short Answer 2
3 Marks
Name any three types of premating isolating mechanisms.
3 Marks
Name any three types of postmating isolating mechanisms.
3 Marks
Explain Geographical Isolation
3 Marks
Write down the three main concepts of the modern synthetic theory.
3 Marks
What is chromosomal aberration? Give any two types of aberrations found in the population.
3 Marks
Complete the table based on the special features of Human ancestors showing their cultural and social development.
| Ancestors | Special features |
| Homo erectus | |
| Buried their dead | |
| Made tools from stones |
3 Marks
Write a note on Homo habilis
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC 5 Origin and Evolution of Life Long Answer
4 Marks
Long answer question.
Explain the different factors responsible for genetic variations.
4 Marks
Long answer question.
By taking industrial melanism as one example. Explain the concept of natural selection.
Solutions for 5: Origin and Evolution of Life
SCERT Maharashtra solutions for Biology [English] 12 Standard HSC chapter 5 - Origin and Evolution of Life
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Concepts covered in Biology [English] 12 Standard HSC chapter 5 Origin and Evolution of Life are Mutation Theory, Modern Synthetic Theory of Evolution, Hardy Weinberg’s Principle, Adaptive Radiation, Evidences for Biological Evolution, Speciation, Organic Evolution, Geological Time Scale, Human Evolution, Theories of Origin of Life, Chemical Evolution of Life (Self-assembly Theory of the Origin of Life), Darwinism, Origin and Evolution of Universe and Earth, Theories of Biological Evolution.
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