Tag: unicellular and multicellular organisms

Questions Related to unicellular and multicellular organisms

Hybridoma cells are

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. 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

Choose the correct answers from the alternatives given.
Slime molds have:

biology caskets of life the cell structure cytoplasm unicellular and multicellular organisms

  1. pseudoplasmodia

  2. feeding stages consisting of solitary, individual cells

  3. spores that develop into free-living amoeboid cells

  4. spores that develop into flagellated gametes

Show answer
Correct Option: D
Explanation:

The haploid spores are produced from the mass by meiosis, these spores are developed or germinated into flagellated gametes. 

So, the correct option is 'spores that develop into flagellated gametes'.

To observe Amoeba and Paramecium in a water drop, the drop was taken on a glass slide. If both the organisms were clearly seen, then the stain used must be ________.

biology caskets of life the cell structure cytoplasm unicellular and multicellular organisms

  1. Methylene blue

  2. Iodine

  3. Safranin

  4. Eosin

Show answer
Correct Option: A
Explanation:

Microorganisms can be observed under microscope using particular stain. To observe Amoeba and Paramecium in a water drop, the drop was taken on a glass slide. If both the organisms were clearly seen, then the stain used must be Methylene blue or thionin. Both these stains are LTP, that is Lipid transfer protein. They are used to observe animal cells like amoeba and paramecium through hybridization membranes like water. This stain makes the nucleus of amoeba and paramecium visible under microscope.

Thus, the correct answer is 'Methylene blue.'

Shape of Paramecium is 

biology caskets of life the cell structure cytoplasm unicellular and multicellular organisms

  1. Circular

  2. Oval

  3. Rectangular

  4. Square

Show answer
Correct Option: B
Explanation:

The Paramecium is a unicellular ciliated protozoan. It looks an oval, slipper-shaped micro-organism when observed under a microscope, rounded at the front/top and pointed at the back or bottom. It can also be seen by naked eyes.

Choose the correct answers from the alternatives given.
Which one of the following protists is not correctly linked to the type of movement it shows?

biology caskets of life the cell structure cytoplasm unicellular and multicellular organisms

  1. Amoeboids-pseudopodia

  2. Ciliates-cilia

  3. Zooflagellates-flagella

  4. Sporozoa-flexing the pellicle

Show answer
Correct Option: D
Explanation:

Sporozoa do not have flagella, cilia, or pseudopodia and they show gliding movement, amoeboids show movement by pseudopodia, ciliates by cilia and zooflagellates show by flagella, the pellicle is shown by paramecium.

So, the correct option is 'Sporozoa-flexing the pellicle'.

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

Show answer
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.

................... possess notochord, ............... do not possess notochord.

biology diversity in living things and their classification oviparous and viviparous number and shape of cells unicellular and multicellular organisms

  1. Vertebrates, invertebrates

  2. Invertebrates, vertebrates

  3. Notochords, chordates

  4. None of the above

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Correct Option: A
Explanation:

The animals who posses a proper notochord are known as vertebrates whereas the organisms who do not have a proper notochord are known as invertebrates.

.............. are those animals which have no backbone.

biology diversity in living things and their classification oviparous and viviparous number and shape of cells unicellular and multicellular organisms

  1. Invertebrates

  2. Vertebrates

  3. Mammals

  4. Aves

Show answer
Correct Option: A
Explanation:

The vertebral column is a supportive structure derived from the notochord. It is more commonly called the backbone or the spine. Animals that do not possess or develop a vertebral column or backbone are commonly called invertebrates. They include crabs, snails, lobsters, octopuses, sea urchins, worms, etc.

So, the correct answer is 'Invertebrates'.

Human beings are invertebrate.

biology diversity in living things and their classification oviparous and viviparous number and shape of cells unicellular and multicellular organisms

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Vertebrates are the animals that possess a dorsal hollow nerve cord, pharyngeal gill slits, and a notochord at some stage of their lives. Human beings are mammals that possess all three of these characteristics and are hence vertebrates.

So, the correct answer is 'False'.

Heart of both, vertebrates and invertebrates is present on dorsal side.

biology diversity in living things and their classification oviparous and viviparous number and shape of cells unicellular and multicellular organisms

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

In nonchordates, heart is present on dorsal side of the body whereas in chordates heart is present on ventral side of the body.