Class 11 Zoology – Animal Kingdom (Questions & Answers)
Very Short Answer Questions
1. What is taxonomy?
Taxonomy is the science of classification of organisms.
2. Name the scientist who introduced binomial nomenclature.
Carl Linnaeus introduced binomial nomenclature.
3. What is symmetry? Give one example.
Symmetry is the arrangement of body parts around an axis. Example: Hydra (radial
symmetry).
4. Define coelom.
Coelom is a fluid■filled body cavity lined by mesoderm.
5. Name one diploblastic animal.
Cnidarians like Hydra are diploblastic.
Short Answer Questions
1. Differentiate between diploblastic and triploblastic animals.
Diploblastic animals have two germ layers (ectoderm and endoderm), while
triploblastic animals have three layers (ectoderm, mesoderm, endoderm).
2. What is the difference between open and closed circulatory systems?
In an open circulatory system, blood flows freely in body spaces; in a closed
system, blood flows through vessels only.
3. Explain radial and bilateral symmetry with examples.
Radial symmetry: body parts arranged around a central axis (e.g., starfish).
Bilateral symmetry: body can be divided into two equal halves (e.g., humans).
4. Write the main features of Phylum Porifera.
Poriferans are multicellular, have pores, lack organs, and show intracellular
digestion.
5. What are the main characteristics of Phylum Arthropoda?
Arthropods have jointed legs, segmented bodies, exoskeleton, and an open
circulatory system.
Very Short Answer Questions
1. What is taxonomy?
Taxonomy is the science of classification of organisms.
2. Name the scientist who introduced binomial nomenclature.
Carl Linnaeus introduced binomial nomenclature.
3. What is symmetry? Give one example.
Symmetry is the arrangement of body parts around an axis. Example: Hydra (radial
symmetry).
4. Define coelom.
Coelom is a fluid■filled body cavity lined by mesoderm.
5. Name one diploblastic animal.
Cnidarians like Hydra are diploblastic.
Short Answer Questions
1. Differentiate between diploblastic and triploblastic animals.
Diploblastic animals have two germ layers (ectoderm and endoderm), while
triploblastic animals have three layers (ectoderm, mesoderm, endoderm).
2. What is the difference between open and closed circulatory systems?
In an open circulatory system, blood flows freely in body spaces; in a closed
system, blood flows through vessels only.
3. Explain radial and bilateral symmetry with examples.
Radial symmetry: body parts arranged around a central axis (e.g., starfish).
Bilateral symmetry: body can be divided into two equal halves (e.g., humans).
4. Write the main features of Phylum Porifera.
Poriferans are multicellular, have pores, lack organs, and show intracellular
digestion.
5. What are the main characteristics of Phylum Arthropoda?
Arthropods have jointed legs, segmented bodies, exoskeleton, and an open
circulatory system.
