Animal Kingdom – NEET MCQs with Concept explanation| Class 11 NCERT
Welcome to the Animal Kingdom — the most fascinating chapter of Class 11 Biology!
Here, we explore the diversity of animals, their body structures, modes of reproduction, and classification into various phyla. For NEET aspirants, this chapter is a high-scoring goldmine because questions often test your ability to recall examples, features, and differences between phyla.
In this post, we’ll go through important MCQs with answers and quick concept reminders to help you revise faster and remember longer.
MCQs with Concept Reminders
Q1. Which of the following animals is radially symmetrical?
A) EarthwormB) Hydra
C) Cockroach
D) Frog
Correct answer : B) Hydra
Concept explanation:Radial symmetry means body parts are arranged around a central axis. Examples: Hydra, Starfish, Jellyfish.
Q2. Which of the following is a pseudocoelomate?
A) Ascaris
B) Earthworm
C) Cockroach
D) Hydra
Correct answer : A) Ascaris
Concept explanation:
A pseudocoelom is a false body cavity (not completely lined by mesoderm). Found in Nematoda (e.g., Ascaris).
Q3. Which phylum has flame cells for excretion?
A) Platyhelminthes
B) Annelida
C) Arthropoda
D) Mollusca
Concept explanation:
A pseudocoelom is a false body cavity (not completely lined by mesoderm). Found in Nematoda (e.g., Ascaris).
Q3. Which phylum has flame cells for excretion?
A) Platyhelminthes
B) Annelida
C) Arthropoda
D) Mollusca
Correct answer : A) Platyhelminthes
Concept explanation:
Flame cells are excretory organs in flatworms (Platyhelminthes). They help remove waste.
Q4. Water vascular system is a characteristic feature of:
A) Mollusca
B) Echinodermata
C) Cnidaria
D) Arthropoda
Concept explanation:
Flame cells are excretory organs in flatworms (Platyhelminthes). They help remove waste.
Q4. Water vascular system is a characteristic feature of:
A) Mollusca
B) Echinodermata
C) Cnidaria
D) Arthropoda
Correct answer : B) Echinodermata
Concept explanation:
Echinoderms (like starfish) use the water vascular system for movement, food capture, and respiration.
Q5. Which of the following is a diploblastic animal?
A) Hydra
B) Earthworm
C) Cockroach
D) Fish
Echinoderms (like starfish) use the water vascular system for movement, food capture, and respiration.
Q5. Which of the following is a diploblastic animal?
A) Hydra
B) Earthworm
C) Cockroach
D) Fish
Correct answer : A) Hydra
Concept explanation:
Diploblastic animals have two germ layers — ectoderm and endoderm. Examples: Cnidaria.
Q6. Which is the first phylum to have a true coelom?
A) Nematoda
B) Annelida
C) Arthropoda
D) Mollusca
Concept explanation:
Diploblastic animals have two germ layers — ectoderm and endoderm. Examples: Cnidaria.
Q6. Which is the first phylum to have a true coelom?
A) Nematoda
B) Annelida
C) Arthropoda
D) Mollusca
Correct answer : B) Annelida
Concept explanation:
Annelids (segmented worms) are the first true coelomates — body cavity completely lined with mesoderm.
Q7. Which phylum has jointed appendages?
A) Annelida
B) Arthropoda
C) Mollusca
D) Echinodermata
Concept explanation:
Annelids (segmented worms) are the first true coelomates — body cavity completely lined with mesoderm.
Q7. Which phylum has jointed appendages?
A) Annelida
B) Arthropoda
C) Mollusca
D) Echinodermata
Correct answer : B) Arthropoda
Concept explanation:
Arthropoda (largest phylum) includes insects, spiders, and crabs — they have jointed legs and exoskeleton.
Q8. Which of the following is a non-chordate?
A) Amphioxus
B) Ascaris
C) Balanoglossus
D) Tunicate
Concept explanation:
Arthropoda (largest phylum) includes insects, spiders, and crabs — they have jointed legs and exoskeleton.
Q8. Which of the following is a non-chordate?
A) Amphioxus
B) Ascaris
C) Balanoglossus
D) Tunicate
Correct answer : B) Ascaris
Concept explanation:
Non-chordates lack a notochord at any stage. Ascaris is a nematode.
Q9. Which of the following animals is oviparous?
A) Cat
B) Pigeon
C) Whale
D) Bat
Concept explanation:
Non-chordates lack a notochord at any stage. Ascaris is a nematode.
Q9. Which of the following animals is oviparous?
A) Cat
B) Pigeon
C) Whale
D) Bat
Correct answer : B) Pigeon
Concept explanation:
Oviparous animals lay eggs. Examples: Birds, reptiles, amphibians.
Q10. Which animal shows metameric segmentation?
A) Starfish
B) Earthworm
C) Snail
D) Jellyfish
Concept explanation:
Oviparous animals lay eggs. Examples: Birds, reptiles, amphibians.
Q10. Which animal shows metameric segmentation?
A) Starfish
B) Earthworm
C) Snail
D) Jellyfish
Correct answer : B) Earthworm
Concept explanation:
Metamerism = body divided into repeated segments. Seen in Annelida, Arthropoda, Chordata.
Q11. Which class of vertebrates has three-chambered heart?
A) Amphibia
B) Reptilia (except crocodile)
C) Mammalia
D) Aves
Metamerism = body divided into repeated segments. Seen in Annelida, Arthropoda, Chordata.
Q11. Which class of vertebrates has three-chambered heart?
A) Amphibia
B) Reptilia (except crocodile)
C) Mammalia
D) Aves
Correct answer : A) Amphibia
Concept explanation:
Amphibians have a three-chambered heart — two atria and one ventricle.
Q12. Which of these is a urochordate?
A) Amphioxus
B) Herdmania
C) Balanoglossus
D) Scoliodon
Amphibians have a three-chambered heart — two atria and one ventricle.
Q12. Which of these is a urochordate?
A) Amphioxus
B) Herdmania
C) Balanoglossus
D) Scoliodon
Correct answer : B) Herdmania
Concept explanation:
Urochordates have notochord only in larval stage. Example: Herdmania (sea squirt).
Q13. Which vertebrate group is poikilothermic?
A) Mammals
B) Birds
C) Amphibians
D) None of these
Urochordates have notochord only in larval stage. Example: Herdmania (sea squirt).
Q13. Which vertebrate group is poikilothermic?
A) Mammals
B) Birds
C) Amphibians
D) None of these
Correct answer : C) Amphibians
Concept explanation:
Poikilothermic = cold-blooded — body temperature varies with environment. Found in fish, amphibians, reptiles.
Q14. Which of these is an example of cartilaginous fish?
A) Rohu
B) Shark
C) Salmon
D) Tuna
Concept explanation:
Poikilothermic = cold-blooded — body temperature varies with environment. Found in fish, amphibians, reptiles.
Q14. Which of these is an example of cartilaginous fish?
A) Rohu
B) Shark
C) Salmon
D) Tuna
Correct answer : B) Shark
Concept explanation:
Cartilaginous fish (Class Chondrichthyes) have skeleton made of cartilage. Examples: Shark, Rays.
Q15. Which of these mammals is egg-laying?
A) Whale
B) Platypus
C) Dolphin
D) Bat
Concept explanation:
Cartilaginous fish (Class Chondrichthyes) have skeleton made of cartilage. Examples: Shark, Rays.
Q15. Which of these mammals is egg-laying?
A) Whale
B) Platypus
C) Dolphin
D) Bat
Correct answer : B) Platypus
Concept explanation:
Monotremes (Platypus, Echidna) are egg-laying mammals.
Concept explanation:
Monotremes (Platypus, Echidna) are egg-laying mammals.
Tip for This Chapter
Learn examples for each phylum — NEET loves to test them.
Focus on unique features (like flame cells, water vascular system, jointed appendages).
Practice phyla differences with a table for quick recall.
Focus on unique features (like flame cells, water vascular system, jointed appendages).
Practice phyla differences with a table for quick recall.
The Animal Kingdom is vast but scoring if you break it into phyla and key traits. These MCQs with concept reminders will help you connect facts with logic, making it easier to recall during the exam.
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