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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
![Balbharati solutions for Biology [English] 12 Standard HSC Maharashtra State Board chapter 5 - Origin and Evolution of Life - Shaalaa.com](/images/biology-english-12-standard-hsc-maharashtra-state-board_6:429f7f9009264240a77c8945f6342a63.JPG "Balbharati solutions for Biology [English] 12 Standard HSC Maharashtra State Board 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 Balbharati for Biology [English] 12 Standard HSC Maharashtra State Board.
Balbharati solutions for Biology [English] 12 Standard HSC Maharashtra State Board 5 Origin and Evolution of Life Exercises [Pages 117 - 118]
Multiple choice question.
Who proposed that the first form of life could have come from per- existing nonliving organic molecules?
Alfred Wallace
Oparin and Haldane
Charles Darwin
Louis Pasteur
Multiple choice question.
The sequence of origin of life may be-
Organic materials- inorganic materials – Eobiont- colloidal aggregates- cell.
Inorganic materials – organic materials – colloidal aggregates – Eobiont- cell
Organic materials- inorganic materials – colloidal aggregates - cell
Inorganic materials- organic materials – Eobiont- colloidal aggregates - cell
Multiple choice question.
In Hardy - Weinberg equation, the frequency of homozygous recessive individual is represented by:
p2
pq
q2
2pq
Multiple choice question.
Select the analogous organs.
Forelimbs of whale and bat
Flippers of dolphins and penguin
Thorn and tendrils of Bougainvillea and Cucurbita.
Vertebrates hearts or brains.
Multiple choice question.
Archaeopteryx is known as missing link because it is a fossil and share characters of both
Fishes and amphibians
Annelida and arthropoda
Birds and reptiles
Chordates and nonchordates
Multiple choice question.
Identify the WRONG statement regarding evolution.
Darwin’s variations are small and directional
Mutations are random and nondirectional
Adaptive radiations leads to divergent evolution
Mutations are non - random and directional
Multiple choice question.
Gene frequency in a population remain constant due to –
Mutation
Migration
Random mating
Non- random mating
Multiple choice question.
Which of the following characteristic is not shown by the ape?
Prognathous face
Tail is present
Chin is absent
Forelimbs are longer than hind limbs
Multiple choice question.
______ can be considered as a connecting link between ape and man.
Australopithecus
Homo habilis
Homo erectus
Neanderthal man
Multiple choice question.
The cranial capacity of Neanderthal man was
600 cc
940 cc
1400 cc
1600 cc
Very short answer question.
Define the Gene pool
Very short answer question.
Define the Gene frequency
Very short answer question.
Define Organic evolution.
Define Population.
Very short answer question.
Define Speciation.
Very short answer question.
What is adaptive radiation?
Very short answer question.
If variation occurs in a population by chance alone and not by natural selection and brings a change in frequencies of an allele. What is it called?
Very short answer question.
State the Hardy – Weinberg equilibrium.
Very short answer question.
What are homologous organs?
Very short answer question:
What is vestigeal organ?
Very short answer question.
What is the scientific name of the modern man?
Very short answer question.
What is coacervate?
Very short answer question.
Which period is known as “age of Reptilia”?
Very short answer question.
Name the ancestor of human which is described as a man with an ape brain.
Short answer question.
Write a note on Genetic drift.
Short answer question.
Enlist the different factors that are responsible for changing gene frequency.
Short answer question.
Draw a graph to show that natural selection leads to disruptive change.
Short answer question.
Give the significance of fossils.
Short answer question.
Write the objections to Mutation theory of Hugo de Vries.
Short answer question.
What is disrruptive selection?
Short answer question.
Give an example of disrruptive selection
Match the following:
| Column- I | Column- II |
| 1. August Weismann | a. Mutation theory |
| 2. Hugo de vries | b. Germplasm theory |
| 3. Charl Darwin | c. Theory of acquired characters |
| 4. Lamark | d. Theory of natural selection |
Long answer question.
Would you consider wings of butterfly and bat as homologous or analogous and why?
Long answer question.
What is adaptive radiation? Explain with suitable example.
Long answer question.
By taking industrial melanism as one example. Explain the concept of natural selection.
Long answer question.
Describe the Urey and Miller experiment.
What is Isolation?
Long answer question.
Describe the different types of reproductive isolations.
What is Genetic variations?
Long answer question.
Explain the different factors responsible for genetic variations.
Complete the chart.
| Era | Dominating group of animal |
| 1. Cenozoic | ____________ |
| 2. _________ | Reptiles |
| 3. Palaeozoic | ____________ |
| 4. _________ | Invertebrates |
Solutions for 5: Origin and Evolution of Life
Balbharati solutions for Biology [English] 12 Standard HSC Maharashtra State Board chapter 5 - Origin and Evolution of Life
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Concepts covered in Biology [English] 12 Standard HSC Maharashtra State Board 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.
Using Balbharati Biology [English] 12 Standard HSC Maharashtra State Board solutions Origin and Evolution of Life exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Balbharati Solutions are essential questions that can be asked in the final exam. Maximum Maharashtra State Board Biology [English] 12 Standard HSC Maharashtra State Board students prefer Balbharati Textbook Solutions to score more in exams.
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