Tag: protista

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Questions Related to protista

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Maximum speed of a protist is

  1. 20 $\mu m/sec$
  2. 2.0 $mm/sec$
  3. 200 $\mu m/sec$
  4. 2 $ cm/sec$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • The movement of protists is affected by various surrounding factors,  certain protists move by special locomotive structures. 
  • Ciliated cells and flagellated cells move faster than others, but the flagellated cells are able to move as fast as 2.0 mm/sec.
  • The correct answer is B.

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

In Amoeba and Paramecium osmoregulation occurs through

  1. Pseudopodia

  2. Nucleus

  3. Contractile vacuole

  4. General surface
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Osmoregulation is the maintenance of constant osmotic pressure in the fluids of an organism by the control of water and salt concentration. In Amoeba and paramecium, the osmoregulation occurs through Contractile vacuole. The function of a contractile vacuole in protozoan is to expel out excess water via diffusion.
So, the correct answer is 'Contractile vacuole'.
Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

If all ponds and puddles are destroyed, the organism likely to be destroyed is

  1. Leishmania

  2. Trypanosoma

  3. Ascaris

  4. Plasmodium
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The breeding places of this mosquito is ponds, marshes, swampy areas etc. So, if all the ponds and puddles are destroyed. Anopheles will not be able to survive leading to destruction of its parasite, Plasmodium.
So, the correct answer is 'Plasmodium'
Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Protistan genome has

  1. Membrane bound nucleoproteins embedded in cytoplasm

  2. Free nucleic acid aggregates

  3. Gene containing nucleoproteins condensed together in loose mass

  4. Nucleoprotein in direct contact with cell substance
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Protista are eukaryotic organism. They have well defined membrane bound nucleus, which encloses genetic material and membrane bound cell organelle in cytoplasm.

Therefore the correct option is A. 

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

What is not connected with reproduction of protozoans?

  1. Cryptogamy

  2. Schizogamy

  3. Autogamy

  4. Conjugation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Schizogeny is the method of reproduction in which production of a sexual individual from an asexual form usually by fission.

Cryptogamy involves new individuals with spores without the formation of seeds or flowers.
Autogamy is a type of reproduction in which the production of offspring is done by the fusion of two gametes from the same individual.
Conjugation is the process of reproduction in which the genetic material is transferred between two cells by a direct cell to cell contact.
So the correct answer is yes 'Schizogamy'.

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Kingdom protista includes

  1. Life cycle showing sporic meiosis

  2. Life cycle showing zygotic meiosis

  3. Life cycle showing gametic meiosis

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Protists exhibit diverse life cycles, including both zygotic meiosis (common in many algae and fungi-like protists) and gametic meiosis (common in many ciliates and animals).

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Unicellular algae, diatoms and protozoans are members of

  1. Monera

  2. Protista

  3. Fungi

  4. Plantae
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Kingdom Protista includes diverse eukaryotic organisms that are primarily unicellular, such as diatoms, protozoans, and unicellular algae. Monera consists of prokaryotes, while Fungi and Plantae are generally multicellular (with exceptions like yeast).

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Unicellularity is the characteristic of

  1. Cyanobacteria

  2. Monera

  3. Protista

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Unicellularity is a fundamental characteristic of organisms in Kingdom Monera (bacteria) and Kingdom Protista. Cyanobacteria are a phylum within the Kingdom Monera, so all listed groups exhibit unicellularity.