Chapter Exam

Chapter 4 ZOOLOGY : Animal Diversity - II (Chordata) — Online MCQ Test

Q: Urochordata are commonly called as:

Answer: B. Tunicates — Urochordates are called tunicates because their body is covered by a tunic, a cellulose-like outer covering.

Q: Which of the following is NOT a characteristic of Pisces?

Answer: D. Dry, scaly skin — Pisces have scales and mucus-covered skin, but not dry skin. Dry, scaly skin is a feature of reptiles.

Q: A bird skeleton is light and adapted for flight mainly because of:

Answer: A. Presence of air sacs and hollow bones — Birds have hollow bones and air sacs that reduce body weight and aid in efficient respiration and flight.

ZOOLOGY · CLASS 11 INTER I YEAR · Andhra State Board

Practice Chapter 4 ZOOLOGY : Animal Diversity - II (Chordata) with a free chapter-wise online MCQ test for Andhra State Board CLASS 11 INTER I YEAR ZOOLOGY. This chapter covers: This chapter details salient features and classification of chordates including Urochordata Cephalochordata Vertebrata classes Pisces Amphibia Reptilia Aves and Mammalia.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 4 ZOOLOGY : Animal Diversity - II (Chordata) — Important Questions & Answers (FAQ)

Frequently asked questions from Andhra State Board CLASS 11 INTER I YEAR ZOOLOGY — Chapter 4 ZOOLOGY : Animal Diversity - II (Chordata), with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is a key characteristic of all chordates?

A. Presence of a notochord at some stage of development ✓
B. Presence of jointed appendages
C. Body divided into head, thorax, and abdomen
D. Exoskeleton made of chitin

Answer: A. Presence of a notochord at some stage of development
All chordates possess a notochord at least during some stage of their development. This is one of the defining features of Phylum Chordata.

Urochordata are commonly called as:

A. Lancelets
B. Tunicates ✓
C. Cartilaginous fishes
D. Amphibians

Answer: B. Tunicates
Urochordates are called tunicates because their body is covered by a tunic, a cellulose-like outer covering.

Which of the following is NOT a characteristic of Pisces?

A. Fins for locomotion
B. Gills for respiration
C. Heart with two chambers
D. Dry, scaly skin ✓

Answer: D. Dry, scaly skin
Pisces have scales and mucus-covered skin, but not dry skin. Dry, scaly skin is a feature of reptiles.

A bird skeleton is light and adapted for flight mainly because of:

A. Presence of air sacs and hollow bones ✓
B. Presence of scales on the body
C. Presence of a lateral line system
D. Presence of a cloaca only

Answer: A. Presence of air sacs and hollow bones
Birds have hollow bones and air sacs that reduce body weight and aid in efficient respiration and flight.

Which of the following is the most appropriate difference between Chondrichthyes and Osteichthyes?

A. Chondrichthyes have bony endoskeleton, Osteichthyes have cartilaginous endoskeleton
B. Chondrichthyes have cartilaginous endoskeleton, Osteichthyes have bony endoskeleton ✓
C. Both have cartilaginous endoskeletons
D. Both have bony endoskeletons

Answer: B. Chondrichthyes have cartilaginous endoskeleton, Osteichthyes have bony endoskeleton
Chondrichthyes are cartilaginous fishes, while Osteichthyes are bony fishes. This is a major distinguishing feature between the two groups.