Tag: biodiversity and classification

Questions Related to biodiversity and classification

The branches Radiata and Bilateria of the Eumctazoa both exhibit:

biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

  1. cephalization

  2. dominance of diploid life stage

  3. a complete digestive tract with separate mouth and anus

  4. three germ layers in embryonic development

Show answer
Correct Option: B
Explanation:

Multicellular animals have a dominant diploid life cycle (diplontic cycle) with the haploid generation reduced to the egg and sperm. The branches Radiata and Bilateria both include multicellular organisms, with Bilaterians a step more advanced than Radiata in multicellular complexity. Therefore both exhibit a diploid dominant life cycle. 

So, the correct option is 'dominance of the diploid life stage'.

The subkingdom Parazoa consists of:

biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

  1. radially symmetrical sponges, jellyfishes, and their relatives

  2. only animals that do not feed by ingestion

  3. animals with protostome-type development

  4. animals lacking tissues and organs

Show answer
Correct Option: D
Explanation:

The subkingdom Parazoa includes multicellular organisms having less-specialized cells than in the Metazoa. It includes the phylum Porifera (sponges) and the organisms under this phylum lack tissues with a mass of cell embedded in a gelatinous matrix. Jellyfishes belong to the phylum Cnidaria and they do not belong to this subkingdom. 

So, the correct option is 'animals lacking tissues and organs'.

The word 'acellular' was given by

biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

  1. Dobell

  2. H. J. clarck

  3. Leder mullar

  4. Linnaeus

Show answer
Correct Option: A
Explanation:

Acellular word was given by Dobell and Hyman. Acellular is described as tissues or organisms that are not made up of separate cells but often have more than one nucleus and made up of proteins e.g., virus. Hence option A is correct.

Who divided animals into 'enaima' and 'anaima'?

biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

  1. Aristotle

  2. Linnaeus

  3. Cuvier

  4. Lamarck

Show answer
Correct Option: A
Explanation:

Aristotle classified the animals into two groups, 'Anima' (animals with no red blood, invertebrates) and 'Enaima' (animals with red blood, vertebrates). 'Enaima' was further divided into 'Ovipara' and 'vivipara'. 

Which one of the following animal is not deuterostome?

biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

  1. Ambystoma

  2. Amphilina

  3. Anguilla

  4. Amphiuma

Show answer
Correct Option: B
Explanation:

Deuterostomes are groups of animals that have true body cavities, in which the anus develops from the first opening in the embryo and the mouth develops later. All chordates are deuterostomes.

Ambystoma are a group of salamanders endemic to North America.
Anguilla is a species of eel, a snake-like, catadromous fish.

Amphiuma is a genus of aquatic salamanders. Therefore they all are deuterostomes.

Amphilina are platyhelminthes, which are parasitic in the body cavity of sturgeons. Therefore Amphilina is not a deuterostome. Hence, option B is correct.

Organisms in the kingdom Animalia are 

biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

  1. Multicellular and heterotrophic

  2. Multicellular and autotrophic

  3. Unicellular and autotrophic

  4. Unicellular and heterotrophic

Show answer
Correct Option: A
Explanation:

Animals are multicellular, eukaryotic organisms. All animals are heterotrophs, i.e., they can not synthesize their own food and depend on other organism for food.

Which of the following is related to the heterotroph hypothesis?

biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

  1. Anaerobic and aerobic organisms evolved simultaneously

  2. Photosynthetic autotrophs evolved first since they required only energy from the sun and simple molecules from the environment

  3. Autotrophs evolved before a carbon source was made available

  4. Anaerobic heterotrophs evolved first

  5. Chemosynthesis was critical to the evolution of heterotrophic organisms

Show answer
Correct Option: D
Explanation:

Heterotrophs are organisms that obtain their food from other organisms as they cannot produce their own food. In food chains, they are usually secondary or tertiary consumers. The heterotroph hypothesis states that the first living organism was a heterotroph. It also assumed that the anaerobic heterotrophs evolved first.

So, the correct answer is 'Anaerobic heterotrophs evolved first'.

Match the columns

Column I Column II
(a) Protozoa 1. Pennatula
(b) Aschelminthes 2. Beroe
(c) Porifera 3. Monocystis
(d) Ctenophora 4. Wuchereria
(e) Cnidaria 5. Cliona
biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

  1. a-3, b-5, c-4, d-1, e-2

  2. a-4, b-3, c-5, d-2, e-1

  3. a-3, b-4, c-5, d-2, e-1

  4. a-2, b-4, c-5, d-3, e-1

  5. a-3, b-4, c-5, d-1, e-2

Show answer
Correct Option: C
Explanation:

Pennatula (sea fan) belongs to the Phylum Cnidaria and class Anthozoa. Beroe (comb jelly) belongs to the phylum Ctenophora. Monocystis belongs to the phylum Protozoa and class Telospora. Wuchereria belongs to Aschelminthes. Cliona belongs to the Porifera phylum and class demospongiae. 

So, the correct answer 'a-3, b-4, c-5, d-2, e-1'.

Characteristic of rotifers is

biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

  1. Small size

  2. Ring of cilia

  3. Multicellular nature

  4. All of the above

Show answer
Correct Option: D
Explanation:
  • Rotifers are multicellular, microscopic and free-living microscopic or near-microscopic multicellular pseudocoelomate animals. Hence multicellular nature and small size
  • .They belong to the phylum Rotifera
  • They are characterized by having specialized organ systems and a complete digestive tract that includes both a mouth and anus. Since these characteristics are all uniquely animal characteristics, rotifers are recognized as animals or metazoans, even though they are microscopic.
  • Rotifers are called wheel animalcules because their corona is composed of several ciliated tufts around the mouth i.e ring of cilia, that in motion resemble a wheel. Hence Characteristic of rotifers is small size, ring of cilia and multicellular nature.
  • So, the correct answer is 'All the above'.

Except cell membranes, cells of which of the following kingdom do not possess cell wall

biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

  1. Plantae

  2. Monera

  3. Fungi

  4. Animalia

Show answer
Correct Option: D
Explanation:
  • Animal shows different types of body organization.
  • Animals can be radial, asymmetric and bilateral symmetric.
  • Most of the animals are triploblastic.
  • The digestive system is incomplete in some phyla and complete in rest of the phyla.
So, the correct option is 'animalia'.