Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

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.

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

Which of the following is not a character of protista

  1. Membrane bound organelles are present in the cell

  2. Protists are prokaryotic

  3. Mode of nutrition is both autotrophic and heterotrophic

  4. Body organisation is cellular

  5. Some protists have cell walls
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Protists are eukaryotic organisms, meaning they possess membrane-bound organelles and a defined nucleus. The statement that they are prokaryotic is incorrect, as prokaryotes belong to the Kingdom Monera.

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

Which protistan shows bioluminescence?

  1. Euglena

  2. Noctiluca

  3. Forminiferans

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

Noctiluca scintillans belongs to class Flagellata of phylum Protozoa. It is the most common cause of bioluminescence in the ocean. Because of this, it is also called sea sparkle. It produces light throughout the cytoplasm by luciferin- luciferase reaction.

Hence the correct option is B. 

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

Protista contains

  1. Euglena, Dinoflagellates and Yeast

  2. Amoeba, Paramaecium, Hydra

  3. Euglena, Paramaecium, Mushroom

  4. Amoeba, Paramaecium and Dinoflagellates/Diatoms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Kingdom Protista includes various groups such as Amoeba (sarcodines), Paramecium (ciliates), and dinoflagellates/diatoms (algae). Yeast is a fungus, Hydra is an animal, and Mushrooms are fungi.

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

The marine organisms showing spinning movements and responsible for killing fishes by producing toxins belong to the following kingdom of Whittaker

  1. Fungi

  2. Animalia

  3. Monera

  4. Protista
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dinoflagellates are marine protists known for their rapid spinning movement. Certain species, such as those causing red tides, produce potent toxins that can kill marine life, including fish.