Tag: diversity and classification in animals

Questions Related to diversity and classification in animals

A cell weighing 1 mg grows to double its initial mass before dividing into two daughter cells of equal mass. Assuming no death, at the end of 100 divisions what will be the ratio of the mass of the entire populations of these cells to that of the mass of the Earth? Assume that mass of the Earth is $10^{24}Kg$ and $2^{10}$ is approximately equal to $1000$.

botany caskets of life the cell structure cytoplasm unicellular and multicellular organisms number and shape of cells diversity and classification in animals cell parameters

  1. $10^{-28}$

  2. $10^{-3}$

  3. $1$

  4. $10^3$

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Correct Option: D

Hybridoma cells are

cell parameters diversity and classification in animals number and shape of cells unicellular and multicellular organisms cytoplasm the cell structure caskets of life botany

  1. nervous cells of frog

  2. hybrid cells resulting from myeloma cells

  3. only cells having oncogenes

  4. product of spore formation in bacteria.

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Correct Option: B

The organism made up of only a single cell is known as 

botany living world of animals oviparous and viviparous number and shape of cells unicellular and multicellular organisms diversity and classification in animals

  1. Unicellular

  2. Acellular

  3. Multicellular

  4. None of the above

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Correct Option: A
Explanation:

The cell is the structural unit of life. Unicellular organisms are made up of one cell that performs all the functions and thus, called as a single-celled organism.

Which one is not an oviparous animal?

biology animal world oviparous and viviparous number and shape of cells unicellular and multicellular organisms diversity and classification in animals adaptations in animals

  1. Human

  2. Crow

  3. Hen

  4. Crocodile

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Correct Option: A
Explanation:

  • Animals that lay eggs to produce their offspring are known as oviparous animals
  • Birds, reptiles and amphibians are examples of oviparous animals.
  • Mammals (including human beings) are an example of viviparous animals as they produce offspring by the development of embryo inside their body, eventually leading to live birth.
So, the correct option is 'Human'.

Animals who give birth to young ones are 

biology animal world oviparous and viviparous number and shape of cells unicellular and multicellular organisms diversity and classification in animals adaptations in animals

  1. Oviparous

  2. Viviparous

  3. Ovoviviparous

  4. None of the above

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Correct Option: B
Explanation:

Animals giving birth to young ones are called viviparous animals. The egg of these animals typically contains less of yolk insufficient to support the development of the zygote into an embryo. Hence, development proceeds inside the body of the female animal and the fully developed embryo is delivered. Oviparous animals lay an egg. Their egg typically has more amount of yolk and can support the development of the zygote into an embryo. Ovovivipary is an in-between scenario in which eggs are retained till embryo is developed and is then delivered.

So, the correct answer is option B.

Tortoise is 

biology animal world oviparous and viviparous number and shape of cells unicellular and multicellular organisms diversity and classification in animals adaptations in animals

  1. Oviparous

  2. Viviparous

  3. Terrestrial

  4. None of the above

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Correct Option: A
Explanation:

Tortoise lays eggs so it is Oviparous and not Viviparous.

It lives on land and water both so it is not just terrestrial.
So the correct answer is 'Oviparous'. 

On the basis of reproduction, animals are classified into .......... type.

biology animal world oviparous and viviparous number and shape of cells unicellular and multicellular organisms diversity and classification in animals adaptations in animals

  1. 3

  2. 2

  3. 4

  4. 5

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Correct Option: B
Explanation:

There are two types of reproduction: Sexual and Asexual.

So the correct answer is '2'. 

Birds are considered oviparous

biology animal world oviparous and viviparous number and shape of cells unicellular and multicellular organisms diversity and classification in animals adaptations in animals

  1. They are able to fly

  2. The forelimbs are modified into wings

  3. They lay eggs

  4. None of the above

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Correct Option: C
Explanation:

Ovipary is the phenomenon in which an adult organisms reproduces and lays eggs which later hatch and give rise to young ones.

Since birds lay eggs they are known as oviparous.
Flight or wing modifications are not related to this phenomenon.
So the correct answer is 'They lay eggs'.

Animals which gives birth to the young one is called as invertebrates.

biology animal world oviparous and viviparous number and shape of cells unicellular and multicellular organisms diversity and classification in animals adaptations in animals

  1. True

  2. False

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Correct Option: B
Explanation:

Animals which give birth to young ones are known as mammals which are vertebrates.

So the correct answer is 'False'. 

Birds and snakes are oviparous animals.

biology animal world oviparous and viviparous number and shape of cells unicellular and multicellular organisms

  1. True

  2. False

Show answer
Correct Option: A
Explanation:
Oviparous are the animals which lay eggs. Snakes belong to class Reptilia and birds belongs to class Aves. They lay eggs. The eggs hatch by the warmth of the body. The yolk of the egg provides nutrition to the developing embryo.
So, the correct answer is option A.