Trueman Solutions for Class 12 Biology II Chapter 7
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Trueman Solutions for Class 12 Biology II Chapter 7

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42 Qs

Related Questions to study

Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory.

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Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.

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Attempt giving a clear definition of the term species.

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Try to trace the various components of human evolution. (hint: brain size and function, skeletal structure, dietary preference, etc.)

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Find out through internet and popular science articles whether animals other than man has self-consciousness.

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List 10 modern-day animals and using the internet resources link it to a corresponding ancient fossil. Name both.

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Practice drawing various animals and plants.

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Describe one example of adaptive radiation.

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Can we call human evolution as adaptive radiation?

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Using various resources such as your school library or the internet and discussions with your teacher, trace the evolutionary stages of horse.

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Write the probable differences in eating habits of Homo habilis and Homo erectus.

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According to de-Vries, what is saltation?

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How ozone was formed first of all?

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(a) Select the homologous structures from the combinations given below:
(i) Forelimbs of whales and bats
(ii) Tuber of potato and sweet potato
(iii) Eyes of octopus and mammals
(iv) Thorns of Bougainvillea and tendrils of Cucurbita

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Who created coacervates artifically in the laboratory for the first time? Enumerate their characteristics. What do they confirm about the origin of life?

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Which is the most reliable evidence for evolution and why?

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What is biogeography? How do Darwin's finches provide the biogeographical evidence in favour of evolution?

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How do the apes and humans differ with regard to the vertebral column, pelvic girdle and feet?

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What is genetic drift ? Give its significance in evolution.

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Explain the saying "ontogeny repeats phylogeny".

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Australian marsupials and placental mammals are suitable examples of adaptive radiation and convergent evolution. Explain giving reasons.

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Write your observations on the variations seen in Darwin's finches shown.

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How did Darwin explain the existence of different varieties of finches on the Galapagos Islands?

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Explain the theory of biogenesis.

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How did Miller demonstrate experimentally the chemical evolution that happened three billion years ago?

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Mention any three characteristics of Neanderthal man that lived in Near East and Central Asia.

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The coelacanth was caught in 1938 in South Africa. Why is it very significant in the evolutionary history of vertebrates?

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Explain the Darwinian theory of evolution with the help of one suitable example. State the two key concepts of the theory.

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Describe Dryopithecus, Ramapithecus, Australopithecus, Homo erectus and Homo sapiens giving brain size and function, skeletal structure, dietary preference, etc.

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What is adaptive radiation? Explain it with reference to Australian marsupials. Can this fauna indicate its parallel evolution with placental mammals? How do you explain their geographic distribution?

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How has the study of fossils helped in convincing scientists that organisms have come into existence through evolution? How can the age of fossil be determined?

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What is meant by biogeography? Discuss the biogeographic evidence in support of organic evolution.

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'Mammals and birds have evolved from reptiles'. In what way does a comparative study of their embryology establish the validity of this statement?

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Give Weismann's theory of germplasm. What light does it throw on Lamarckism?

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How can you show that adaptations have a genetic basis?

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Penicillin drug was used for most bacterial infections. But it not so effective nowadays. What are the possible reasons?

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A child was born with a small tail-like structure.
What will be your role as a student of biology dealing with the issue?

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State the Hardy-Weinberg law.

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Write the mathematical formula representing this Hardy-Weinberg equilibrium law.

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Under what conditions does the Hardy-Weinberg equilibrium remain undisturbed?

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 A missing link between birds and reptiles

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 A connecting link between bony fishes and amphibians is?

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Multiple Choice Questions

27 Qs

Related Questions to study

According to Darwin, the organic evolution is due to

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Which of the following is called Sewall Wright effect?

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The Scientist related with the theory of biogenesis and who has done experiment with the swan-necked flask is

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The mammals (animals) from colder climates generally have shorter hair and not fully developed ear, eyes and other phenotypic characters. This is known as

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The rise of primates occured in ___________ epoch.

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Which one is an example of living fossil?

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Which compounds were used by Miller in his experiment for obtaining amino acids and other organic substances?

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Which one refers to Allen's rule

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Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other extremely cold northern regions move to

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Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of

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The species confined to a particular region and not found elsewhere is termed as

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Industrial melanism is an example of

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The wings of a bird and the wings of an insect are

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The first human-like hominid was called

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The idea of 'Natural selection' as the fundamental process of evolutionary change was reached 

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Archaeopteryx is a connecting link between

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Darwin's theory of evolution cannot explain

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The formation of two species from one ancestral species is known as

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Which of the following shows similarity with first man?

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One of the following period witnessed the extinction of dinosaurs and primitive birds.

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Foot prints, trails, tracks and tunnels of various organisations made in mud are rapidly filled in with sand and covered by sediments. This is an example of which of the following types of fossil?

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Which of the following structures is homologus to the wing of a bird?

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Following are the two statements regarding origin of the life.
(a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(b) The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements which one of the following options is correct?

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Analogous structures are a result of

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In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by

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The chronological order of human evolution from early to the recent is

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Which of the following is the correct sequence of events in the origin of life?
I.Formation of protobionts
II.Synthesis of organic monomers
III.Synthesis of organic polymers
IV.Formation of DNA-based genetic systems

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