[TOP] Classification In Animals MCQs And Answers (Multiple Choice Questions)

These Classification in Animals MCQs and Answers are most important for your upcoming biology examinations. We have provided some of the important questions on Classification in Animals with their correct answers. We hope these questions would help you in your upcoming biology examinations.

Classification in Animals MCQs and Answers

1. Which among the following is incorrect about the cellular level of organization?

A group of cells combine to form the whole body

Each cell carries over a specific function

This level of organization is also called as cell aggregate of body plan

Hydra exhibits this level of organization

2. Which among the following is incorrect about tissue level of organization?

Cells performing same functions group together to form a tissue

Organs are absent

Planaria exhibits this level of organization

Cells are specialized with division of labour

3. Which among the following is incorrect about organ system level of organization?

Organs group to form organ systems

Each and every organ system are specialized to perform a specific physiological activity

Annelids exhibit this level of organization

All of these animals have a cavity between their digestive tract and body wall called as coelom

4. Which among the following is incorrect about the circulatory system in different animals?

In open circulatory system, blood is pumped by heart into blood cavity

In closed circulatory system, blood is enclosed in blood vessels

Interstitial fluid is separated from blood in the case of closed circulatory system

Closed circulatory system is exhibited by arthropods

5. Sponges are ______

Asymmetrical

Radially Symmetrical

Bilaterally symmetrical

Bimedially symmetrical

6. Which among the following is incorrect about arrangement of cells in embryo?

The word “blasted” derives its origin from the word blastula which means a hollow ball of cells formed during the early stage of embryo

If the number of cell layers in blastula is two in number, i.e. ectoderm and endoderm, then such organisms are considered to diploblastic

If the number of cell layers in blastula is three in number, i.e. ectoderm, mesoderm and endoderm, then such organisms are considered to triploblastic

In diploblastic organisms, mesoglea, a well differentiated substance, is present between endoderm and ectoderm

7. Mesoderm gives rise to ______

Muscular tissues

CNS

Urinary bladder

Skin

8. Which among the following is incorrect about types of the digestive system in animals?

A digestive system with one opening to outside is called incomplete digestive system

A digestive system with separate openings for ingestion and egestion is called complete digestive system

Platyhelmenthes have a complete digestive system

Sea sponges have an incomplete digestive system

9. Which among the following is incorrect about levels of organization in animals?

Cells are organized in different ways to form the basic body in animals

Cellular level of organization refers to the cluster of the cells that combine to form an animal body

Tissue level of organization refers to the way tissues combine to form organs which in turn form animal body

In organ system level of organization, various organs of the system work coordinately to achieve a specific function

10. Which among the following is not the basis of classification in Animalia?

Segmentation

Symmetry

Mode of nutrition

Levels of organization

11. Which among the following is incorrect about classification on the basis of coelom?

Coelom is the cavity between the body wall and gut wall

Animals are divided into coelomates, acoelomates and pseudocoelomates

Coelom is the fluid filled space other than lymph vessels and blood vessels

In coelomates, cavities between the gut wall and mesoderm is absent

12. Which among the following is incorrect about pseudocoelomates?

Pseudocoelomates means those organisms with false coelom

Mesoderm in pseudocoelom is scattered into pouches

In pseudocoelomates, coelom is lined completely through mesoderm

Nematodes are examples of pseudocoelomates

13. Which among the following is incorrect about coelomates?

Coelomates is also called as Eucoelomates

Body cavity is lined by mesoderm

Internal organs are suspended in the coelom and is attached through peritonium

Porifera is the best example for coelomates

14. Which among the following is incorrect about acoelomates?

Body cavity is absent in these type of organisms

Coelenterates are the best examples for acoelomates

Mesoderm holds the internal organs in its own place

Nematodes also belong to acoelomates

15. Which among the following is incorrect about segmentation?

Some animal bodies are divided into segments both internally and externally

The functions of each and every segment are unique and don’t intersect in their functions

The phenomenon of segmentation is termed as metamerism

Segmentation helps few animals in locomotion

16. Notochord is formed by __________

Mesodermal cells

Ectodermal cells

Epidermal cells

Endodermal cells

17. Which among the following is incorrect about notochords?

Notochord is a rod-like structure on the dorsal side of the animals

During the embryonic development notochord is formed on the dorsal side

Notochord is formed from epidermal cells

Pisces are an example for chordates

18. Which among the following is coelomate, bilateral and has organ system level of organization?

Hemichordates

Aschelminthes

Coelenterata

Platyhelminthes

Classification in Animals MCQs and Answers

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