Tag: animal classification and its benefits

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

In taxonomic hierarchy, Cats are placed under the Genus.

  1. Felis

  2. Panthera

  3. Canis

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cats are placed under the kingdom Animalia, and phylum Chordata, the class Mammalia, and order Carnivora. Cats do belongs to Felidae family and are classified with the genus Felis. So, the correct answer is (A).

Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Match column I with column II and select the correct option from the codes given below.

Column I Column II
A. Choanocytes i. Platyhelminthes
B. Cnidoblasts ii. Ctenophora
C. Flame cells iii. Porifera
D. Nephridia iv. Coelenterata
E. Comb plates v. Annelida


  1. A - (ii), B - (i), C - (iv), D - (v), E - (iii)

  2. A - (ii), B - (iv), C - (i), D - (v), E - (iii)

  3. A - (iii), B - (iv), C - (i), D - (v), E - (ii)

  4. A - (iii), B - (i), C - (iv), D - (v), E - (ii)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ctenophores are characterized by eight rows of cilia, which are used for locomotion. The cilia in each row are arranged to form a stack of combs, also called comb plates, or ctenes; thus the name ctenophore comes from the Greek, meaning "comb bearer. 


A flame cell is a specialized excretory cell found in the simplest freshwater invertebrates, including flatworms (except the turbellarian order Acoela), rotifers and nemerteans; these are the simplest animals to have a dedicated excretory system. Flame cells function like a kidney, removing waste materials. Bundles of flame cells are called protonephridia.

The word nephridium applies in its strict sense only to the excretory organs of annelids, but it may usefully be extended to include the excretory organs of other phyla having similar characteristics. Annelids are segmented animals that typically contain a pair of nephridia on each segment.

Choanocytes are cells that line the interior of asconoid, syconoid and leuconoid body type sponges that contain a central flagellum, or undulipodia, surrounded by a collar of microvilli which are connected by a thin membrane. They make up Choanoderm, a type of cell layer found in sponges.

A cnidocyte (also known as a cnidoblast or nematocyte) is an explosive cell containing one giant secretory organelle or cnida (plural cnidae) that defines the phylum Cnidaria (corals, sea anemones, hydrae, jellyfish, etc.). Cnidae are used for prey capture and defense from predators.

So the correct option is 'A - (iii), B - (iv), C - (i), D - (v), E - (ii)'.

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

Study of animals that live and subsist on other animals is

  1. Ecology

  2. Pathology

  3. Taxonomy

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

Parasitology is the study of parasitic relationship where one animals live and subsist on other animals and organisms. This study is determined by the relationship between the organisms and their hosts and their way of life and draws inference.

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

What is the name of the book written by Aristotle?

  1. Histoire Naturelle

  2. Systema Naturae

  3. Historia Animalium

  4. Philosophie Zoologique
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aristotle, the greek philosopher and scientist wrote the number of books in different fields. However, his works include History of Animals i.e., Historia Animalium is a natural history text written in the fourth century BC and Aristotle died in 322 BC. Thus, the correct answer is option C.

Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Operculum is found in

  1. Lobster

  2. Fish

  3. Snake

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

Operculum is found in fishes.

It is especially found in bony fishes which protect their gills and also supports the facial structure.
Such structure is absent in snakes, lobsters and sponges.
So the correct answer is 'Operculum'.

Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Which of the following phylum are known as pore bearers?

  1. Moullsca

  2. Porifera

  3. Echinodermata

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

Porifera are known as pore bearers because they have tiny sized pores all over their bodies.

Molluscs have smooth skins whereas Echinodermata have spiny skins.
These two phylums do not have any pores on their bodies.
Hence the correct answer is 'Porifera'.

Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Tapeworms belongs to 

  1. Porifera

  2. Mollusca

  3. Platyhelminthes

  4. Nematoda
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tapeworm belongs to Platyhelminthes.

This is can be confirmed by seeing the general characteristics of Platyhelminthes:
1. They are dorsoventrally flattened.
2. Their bodies are bilaterally symmetrical.
3. They are acoelomate and soft 
4. They are tripblastic animals.
So the correct answer is 'Platyhelminthes'. 

Multiple choice biology the living world: adaptations and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

The animals with spiny skin belongs to 

  1. Porifera

  2. Annelida

  3. Echinodermata

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

Spiny skin is the specific characteristic of the phylum Echinodermata.

The term Echinodermata itself means Spiny skin.
Porifera on the other hand have porous skin and annelids have very smooth skin.
Some characteristics of Echinodermata are:
1. Spiny skin.
2. Radial symmetry 
3. Exclusively marine.
4. Triploblastic.
So the correct answer is 'Echinodermata'.