Classification of Animals
Classification of Animals: Overview
This topic covers concepts, such as, Complete Digestive System, Incomplete Digestive System, Cell Aggregate Body Plan & Blind Sac Body Plan etc.
Important Questions on Classification of Animals
Organisms, attached to substratum generally possess
Which one of the following groups of structures/organs have similar function?
Which among the following phylum (s) possess (s) a complete digestive system?
Which is the correct order of evolution?
In some animal groups, the body is found divided into compartments with at least some organs/organ repeated. This characteristic feature is named
Match the following list of animals with their level of organisation.
| Division of Labour | Animal |
| A. Organ level | I. Pheretima |
| B. Cellular aggregate level | ii. Fasciola |
| C. Tissue level | iii. Spongilla |
| D. Organ system level | iv. Obelia |
Determine the correct match showing division of labour with animal example.
Which of the following fish is famous for migration?
Study the following statements
A) Triploblastic animals are usually biradially symmetrical
B) Certain organs in vertebrates are covered by parietal peritoneum only on their ventral side.
C) Pancreas is an example for holocrine gland
D) Elastic cartilage is found in the wall of Eustachian tubes
Select the correct statements
Statement (S) : Bilaterally symmetrical animals are less efficient than the other animals in seeking food and locating mates because of cephalization.
Reason (R): Cephalization is developed in bilaterally symmetrical animals.
The correct answer is:
Statement : Symmetry of an organism is determined based on the symmetry of the early developmental stages and not that of the adults.
Reason : Bilaterally symmetrical animals are more efficient in seeking food, locating mates and avoiding predators.
Which of the following is true?
Which animals become asymmetrical due to torsion in body and shell?
The cross-section of the body of an invertebrate is given below. Identify the animal, which has this body plan?
All flatworms differ from all roundworms in having
Which of the following is a correct sequence of decreasing order of number of species?
Animals which are active at night are called
How is classification helpful in the study of the living world?
All of the following statements about bilateral symmetry are true, except
Biradial symmetry is found in which phylum _____?
