Question

Match the following list of animals with their level of organization. 

Level of organization		Animal
A.	Organ level	1.	Pheretima
B.	Cellular aggregate level	2.	Fasciola
C.	Tissue level	3.	Spongilla
D.	Organ System level	4.	Obelia

Choose the correct match showing the division of labor with animal example.

• A. $i-B, ii-C, iii-D$ and $iv-A$
• B. $i-B, ii-D, iii-C$ and $iv-A $
• C. $i-D, ii-A, iii-B$ and $iv-C $
• D. $ i-A, ii-D, iii-C$ and $iv-B $

Answer 1

The Correct Option is C

The correct option is (C) \(i-D, ii-A, iii-B\) and \(iv-C\)

Pheretima, a member of the phylum Annelida, is organized at the organ system level.

Phylum Fasciola Platyhelminthes is organized at the organ level.

Spongilla belongs to the phylum Porifera and has a cellular aggregate level of organization.

Obelia is a phylum. An organism at the tissue level is present in Coelenterata.

The number of cells in multicellular organisms ranges from millions to trillions. These cells all carry out distinct tasks. In the body, tissues are made up of all the cells that have been trained to carry out certain tasks. Thus, a set of cells at a certain location in the body perform a specific function. Similar to this, several cell groupings inside an organism perform various roles. The division of labour in multicellular creatures is what gives rise to this.
 

Discover more from this chapter: Animal Kingdom
 

 

Answer 2

The correct option is (C) \(i-D, ii-A, iii-B\) and \(iv-C\)

Real Life Applications

• Cellular aggregate-level organisms are sponges and they are used for personal hygiene, bathing, and cleaning, but they can also be used to clean homes, automobiles, or pretty much anything else. 
• They are helpful for painting and other artistic endeavors as well. Tissue-level organisms are Cnidarians and designing immunotoxins to treat cancer has already been employed by cnidarian toxins. 
• Organ-level organisms are Flatworms and they are used in control the zooplankton population dynamics in ponds. Organ system-level organisms are Humans and The circulatory, neurological, and digestive systems are only a few of the organ systems found in humans. 
• Together, these organ systems keep the body alive and in good working order. 
   

Answer 3

The simplest and most fundamental component of life is the cell. The majority of the creatures we encounter are multicellular, yet others are single-celled and capable of carrying out all tasks. There have been several efforts to categorise organisms according to the complexity of their organisational layers. Different species have various hierarchical systems, some simple and others complex. Cellular organisation, tissue, organ, organ-system, and organism are the five levels of organisation. With each step, organisms' and their life forms' complexity rises.

Level of Organization and its Types

Multicellular species from the animal kingdom do not share the same patterns of cell organization.

Examples of cellular structure in animals:

Cellular Level of Organisation: In such species, the cells are arranged as free cell lumps. Sponge cells display this kind of organization.

Cells display a division of functions among themselves that perform the same function and are organized tissues at the tissue level. Coelenterates demonstrate it.

Organ Level of Organisation: Organs are made up of tissues that have a defined function and are grouped together to form organs. Platyhelminthes exhibits it.

Organ system Level of Organisation: Organs that work together to provide a physiological function are grouped into organ systems. This kind of business is prevalent in Annelids, Molluscs, Arthropods, and Chordates.