Tag: zoology

Questions Related to zoology

Panspermia are

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  1. Yeast

  2. Life spores

  3. Bacteria

  4. Viruses

Show answer
Correct Option: B

In evolutionary terms, we are more related to

zoology evolution evidences for evolution - taxonomy, molecular biology and cytology evidences of evolution evidences of biological evolution

  1. Skull of baby chimpanzee

  2. Adult chrmpanzee

  3. Gorilla

  4. Ape

Show answer
Correct Option: A
Explanation:

Bone structure and shape of baby chimp and infant baby skulls are very similar, with the classic huge head and tiny cute face we seem programmed to love. In adolescent chimpanzee and an adult human we can see the jaw start to lengthen in both and their overall similarity. The adult chimpanzee, who has a significantly larger and more powerful bite than any adult human. So, humans and chimpanzees appear to have very similar development in terms of bone structure as they grow up, except that humans just seem to stop at a certain point. There are a multitude of theories as to why this happens, but they all seem to follow the pattern of certain behaviours being selected for which affect the balance of hormones in the body that control the development of adult features. This is called neoteny. So, we can say in evolutionary terms, we are more related to skull of baby chimpanzee than apes, gorillas and adult chimp. Thus, option A is correct and other options are wrong.

Origin of life is also termed as 

zoology evolution evidences for evolution - taxonomy, molecular biology and cytology evidences of evolution evidences of biological evolution

  1. Biogenesis

  2. Abiogenesis

  3. Protobiogenesis

  4. Spontaneous generation

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Correct Option: C

Life comes from pre - existing life was stated by

zoology evolution evidences for evolution - taxonomy, molecular biology and cytology evidences of evolution evidences of biological evolution

  1. Louis Pasteur

  2. Oparin

  3. Darwin

  4. Miller

Show answer
Correct Option: A
Explanation:

Louis Pasteur determined through his different experiments that life on earth has originated from different living organisms. He performed an experiment to test whether nutrient broth could spontaneously generate microbial life or not. In these experiments, he used swan-necked flasks, in which he killed all the microorganisms. But, within a short time, they got infected again with the regeneration of new microorganisms.  

So, option A "Louis Pasteur" is the correct answer.

Forelimbs of mammals have a common basic structure or pattern but are different in their usage/function in different animals. They can be called 

zoology evolution evidences for evolution - taxonomy, molecular biology and cytology evidences of evolution evidences of biological evolution

  1. Homologous organs

  2. Analogous organs

  3. Vestigial organs

  4. Rudimentary organs

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Correct Option: A
Explanation:
Homology indicates common ancestry. Homologous organs have similar structure but different functions. Example: Forelimbs of bat, cheetah, whales and human have similar structure but different functions.
Analogy indicates diverse ancestry. Analogous organs have different structure but perform similar functions. Example: Wings of butterfly and birds are different in structure but perform similar function.

Choose the correct answers from the alternatives given .
Which one of the following promotes similarity among living things?

zoology evolution evidences for evolution - taxonomy, molecular biology and cytology evidences of evolution evidences of biological evolution

  1. Adaptation

  2. Natural selection in different environments

  3. Inheritance from a common ancestor

  4. Homeostatic regulation

Show answer
Correct Option: C
Explanation:

A common belief in evolution is the unity in the organisation of the organisms at various levels is due to descent from a common ancestor.

So, the correct option is 'Inheritance from a common ancestor'.

Who discovered the fossil of archaeopteryx from bavaria (Germany)?

zoology evolution evidences for evolution - taxonomy, molecular biology and cytology evidences of evolution evidences of biological evolution

  1. Thomas Huxley

  2. Hermann von Meyer

  3. Colin Harrison

  4. Andreas Wagner

Show answer
Correct Option: B
Explanation:
The first fossil of Archaeopteryx (a feather) was discovered in Bavaria, Germany in 1860. It was named by Hermann von Meyer (German paleontologist) in 1861. Archaeopteryx is considered as the connecting link between reptiles and birds. These were evidently in existence 150 million years ago, in the late Jurassic period.
Hence, the answer is option B. 

Which of the following were abundant in mesozoic era?

zoology evolution evidences for evolution - taxonomy, molecular biology and cytology evidences of evolution evidences of biological evolution

  1. Mammals

  2. Reptiles

  3. Insects

  4. Fishes

Show answer
Correct Option: B
Explanation:

Reptiles were the most dominant animals of Mesozoic era, which includes the flying reptiles, birds and angiosperms

So, the correct answer is 'Reptiles'

Assertion : Comparative biochemistry provides a strong evidence in favour of common ancestry of living beings. 

Reason : Genetic code is universal.

zoology evolution evidences for evolution - taxonomy, molecular biology and cytology evidences of evolution evidences of biological evolution

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

Show answer
Correct Option: B
Explanation:

Convincing evidence of common ancestry comes from the similarities in the biochemical composition, reactions and physiological activities of living beings, like metabolic process, enzymes, cytochrome C, insulin, haemoglobin, blood and lymph etc. Genetic code is the sequence of DNA nucleotides that determines the amino acid sequence of the translated protein. The genetic code is read in triplets of basescalled codons.  Genetic code is applicable universally i.e. a codon specifies the same amino acid from a virus to a tree or human beings. The mRNA from chick oviduct introduced in E. coli produces an ovalbumen in the bacterium exactly similar to one formed in chick.

State whether the following statements are true or false:
Somatic variations form the basis of evolution.

zoology evolution evidences for evolution - taxonomy, molecular biology and cytology evidences of evolution evidences of biological evolution

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Somatic variations are not inherited. These are variations in somatic cells. While genetic variations are inherited and are due to variation of DNA from germ cells. These genetic variations form the basis of evolution.

Hence, the correct answer is 'False'.