Biology · Science General

Diversity in Living Organisms

3,829 Questions

The diversity in living organisms deals with the classification of life forms into various kingdoms and phyla. This topic covers specific traits of bacteria, animal body cavities, and structural adaptations for survival. These fundamentals are crucial for biology sections in medical entrance and state board exams.

Animal phyla characteristicsBacteria and flagellaBiological adaptationsKingdom Animalia classificationBody cavity typesExtinct organism subphylaJawless animals identification

Diversity in Living Organisms Questions

Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Select the correct one(s) for Ctenophora -

  1. They have similarities with Cnidaria

  2. They have 8 external rows of ciliated comb plates for locomotion

  3. Bioluminescene

  4. All
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Ctenophores, variously known as comb jellies, sea gooseberries, sea walnuts, or Venus's girdles, are voracious predators. Unlike cnidarians, with which they share several superficial similarities, they lack stinging cells. They have ciliated comb plates for locomotion and exhibit bioluminescence
So, the correct option is 'All'
Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Comb jelles or sea walnuts are placed under -

  1. Cnidaria

  2. Ctenophora

  3. Echinodermata

  4. Annelida
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Ctenophores, variously known as comb jellies, sea gooseberries, sea walnuts, or Venus's girdles, are voracious predators. Unlike cnidarians, with which they share several superficial similarities, they lack stinging cells.
So, the correct option is 'Ctenophora'
Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Biradial symmetry and lack of cnidoblasts are the characteristics of-

  1. Starfish and sea anemone

  2. Ctenoplana and Beroe

  3. Aurelia and Paramecium

  4. Hydra and starfish
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Ctenoplana and Beroe lack cnidobiasts and have brradial symmetry. These belong to phylum-Ctenophora. Hydra, sea anemone and Aurelia are coelenterates which have cnidoblasts. Although sea anemone has biradial symmetry.

So, the correct answer is 'Ctenoplana and Beroe'.
Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Presence of comb plates is characteristic feature of

  1. Porifera

  2. Cnidaria

  3. Ctenophora

  4. Platyhelminthes

  5. Annelida
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ctenophores are commonly known as sea whales or comb jellies, radially symmetry, diploblastic organisms with tissue level of organization. The body bears eight external rows of ciliated comb plates which help in locomotion, hence the name Ctenophora. Cnidocytes are absent.

So the correct answer is 'Ctenophora'.

Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Which of the following is not a characteristic of phylum Ctenophora?

  1. They are exclusively marine, radially symmetrical animals

  2. They move by cilia, which join together to form eight median comb plates

  3. When the tentacles are present they are two in number and contain cnidoblasts

  4. Reproduction takes place only by sexual means
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology interdependence in living beings - plants and animals animals as consumers scavengers and decomposers interdependence between plants and animals

Which one of the following is a decomposer?

  1. Fungi

  2. Algae

  3. Protozoa

  4. Insect
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The fungi generally feeds on the dead remains of plants and animals where they break the complex organic substances into the simpler ones through the digestive action. These decomposed material act as a humus for soil and they increase the fertility of the soil. The fungi and the bacteria are the common examples of decomposers. 

Thus, the correct answer is 'Fungi'.

Multiple choice

What is the difference between a Bactrian camel and a dromedary camel?

  1. A dromedary is hairier and has a longer neck

  2. A Bactrian has two humps, and a dromedary has one

  3. A Bactrian has black spots, and a dromedary is light brown

  4. Bactrians are from Africa and have longer legs
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The primary physical distinction between the two species is that the Bactrian camel has two humps, while the dromedary has only one.

Multiple choice

What class of animal is a spider?

  1. insect

  2. arachnid

  3. amphibian

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

Spiders are arachnids, which are characterized by having eight legs and two body segments. Insects have six legs and three body segments.

Multiple choice biology living and non living keeping diseases at bay microorganism: types and habitat the world of microorganisms: part 1

Organisms that cannot be seen by naked eyes is called as

  1. Cell

  2. Microorganism

  3. Living things

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

The microorganisms are the microscopic bodies which cannot be seen directly with the naked eye. These organisms are of the size in microns. The study which deals with the microbes is known as microbiology. There are the different types of microbes like bacteria, viruses, fungi, etc.

Thus, the correct answer is option B. 

Multiple choice botany caskets of life the cell structure multicellular organisms number and shape of cells

An organism made of many cells is called a

  1. unicellular organism

  2. multicellular organism

  3. microorganism

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An organism which is made of more than one cell is called a multi-cellular organism. Humans, animals and plants are some multi-cellular organisms which are made of millions to trillions of cells.

Multiple choice botany caskets of life the cell structure multicellular organisms number and shape of cells

Which of the following is not a cell?

  1. Red Blood Corpuscle (RBC)

  2. Bacterium

  3. Spermatozoa

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

A cell is defined by definitive structures of the cell membrane and cytoplasm and its capacity of performing the vital metabolic activities. The viruses do not have a defined cellular structure. They are made of a protein coat in which a genetic material (either DNA or RNA) is present. They are unable to perform their cellular activities. They are obligate parasites that depend on the machinery of the host cell to perform their multiplication as well as metabolism.

A. Red blood corpuscles are proper cells that have the nucleus at the young stage. Later, on maturity, they perform their metabolic activities through different pathways.
B. The bacterial cell is a prokaryotic cell which is capable of sustaining on its cellular machinery.
C. Spermatozoa are the haploid cells that do not have a long life but are provided with cellular machinery to carry out vital activities.
D. The virus is acellular. They need the cellular machinery of the host cell to perform the vital activities.
Hence, the correct answer is 'Virus'

Multiple choice botany caskets of life the cell structure multicellular organisms number and shape of cells

Which of the following is an exception with either RNA or DNA in the cell as genetic material ? 

  1. Algae

  2. Fungi

  3. Bacteria

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

Viruses are an exception to cell theory as it is an acellular organism that is living inside the host and nonliving outside the host. In viruses, only one nucleic acid (DNA or RNA) is present. Thus, a virus can be either a DNA virus or an RNA virus. Viruses infecting animals usually have DNA as genetic material. Viruses infecting plants usually have RNA as genetic material. All eukaryotic cells have both DNA and RNA in their cells.