
UP LT Grade Zoology Important Questions: UP LT Grade Zoology Exam is an essential component of the UP LT Grade Teacher Exam 2025, testing candidates’ knowledge of the animal kingdom, physiological processes, and ecological concepts. For aspirants, referring to UP LT Grade Zoology Important Questions provides a structured approach to revise key areas, understand the exam pattern, and focus on high-weightage topics.
Prepare effectively for the UP LT Grade Zoology Exam with these carefully selected UP LT Grade Zoology Important Questions with Answers, covering key concepts, life cycles, physiology, and exam-relevant topics for quick revision.
Q1. Among Porifera, Cnidaria, Platyhelminthes, and Echinodermata, which group shows radial symmetry with tissue-level differentiation?
a) Porifera
b) Cnidaria
c) Platyhelminthes
d) Echinodermata
Answer: b) Cnidaria
Q2. Which organism shows maximum polymorphism in Cnidaria?
a) Obelia
b) Hydra
c) Siphonophora
d) Aurelia
Answer: c) Siphonophora
Q3. What is the free-swimming larval stage of Hydra called?
a) Ephyra
b) Planula
c) Nauplius
d) Trochophore
Answer: b) Planula
Q4. Which coral is an example of solitary coral?
a) Fungia
b) Acropora
c) Porites
d) Alcyonium
Answer: a) Fungia
Q5. Nematocysts in Cnidaria are used for:
a) Reproduction
b) Feeding and defense
c) Respiration
d) Locomotion
Answer: b) Feeding and defense
Q6. Which organism has interstitial cells known as embryonic reserve cells?
a) Obelia
b) Hydra
c) Siphonophora
d) Aurelia
Answer: b) Hydra
Q7. Which of the following is NOT a coral reef?
a) Fringing reef
b) Barrier reef
c) Atoll
d) Lagoon
Answer: d) Lagoon
Q8. Secondary host of Guinea worm (Dracunculus medinensis) is:
a) Cyclops
b) Hydra
c) Obelia
d) Planaria
Answer: a) Cyclops
Q9. The venom produced in Hydra’s nematocysts is called:
a) Neurotoxin
b) Hemotoxin
c) Hypnotoxin
d) Cytotoxin
Answer: c) Hypnotoxin
Q10. The body of Cnidaria is:
a) Triploblastic
b) Diploblastic
c) Coelomate
d) Pseudocoelomate
Answer: b) Diploblastic
Q11. Which structure in Cnidaria acts as a sensory organ in medusa stage?
a) Tentacle
b) Rhopalia
c) Nematocyst
d) Gastrovascular cavity
Answer: b) Rhopalia
Q12. The free-swimming stage of Obelia medusa is called:
a) Planula
b) Ephyra
c) Nauplius
d) Trochophore
Answer: b) Ephyra
Q13. Hydra’s gonads originate from which layer?
a) Endoderm
b) Mesoderm
c) Ectoderm
d) Epidermis
Answer: c) Ectoderm
Q14. Hydra reproduces asexually by:
a) Fragmentation
b) Budding
c) Binary fission
d) Spore formation
Answer: b) Budding
Q15. Coral commonly called “Dead Man’s Finger” is identified as:
a) Fungia
b) Alcyonium
c) Obelia
d) Physalia
Answer: b) Alcyonium
Q16. Hydra cannot digest which of the following?
a) Protozoa
b) Small worms
c) Starch
d) Crustaceans
Answer: c) Starch
Q17. Maximum polymorphism in Cnidarians is shown by:
a) Hydra
b) Obelia
c) Siphonophora
d) Aurelia
Answer: c) Siphonophora
Q18. Coral reefs type found near coasts of volcanic islands is called:
a) Fringing reef
b) Barrier reef
c) Atoll
d) Lagoon
Answer: a) Fringing reef
Q19. The green color in Hydra is due to:
a) Nematocysts
b) Zoochlorella (symbiotic algae)
c) Chlorophyll in Hydra cells
d) Interstitial cells
Answer: b) Zoochlorella (symbiotic algae)
Q20. Nematocysts are absent in:
a) Hydra
b) Obelia
c) Planaria
d) Siphonophora
Answer: c) Planaria
UP LT Grade Zoology Exam tests students on core principles of animal biology, physiology, morphology, reproduction, and ecology. For effective preparation, candidates must focus on important topics that are frequently asked in the exam and carry high weightage. Below is a detailed breakdown of these topics based on the latest class session covering Cnidaria and related zoological concepts.
| UP LT Grade Zoology Important Topics | |
| Topic | Key Points |
| Phylum Cnidaria | Radial symmetry, diploblastic, tissue-level organization, polyp & medusa stages |
| Hydra | Budding, regeneration (morphallaxis), nerve net, zoochlorella (symbiotic algae) |
| Coral & Coral Reefs | Types: Fringing, Barrier, Atoll; examples: Fungia, Alcyonium |
| Polymorphism | Multiple body forms, maximum in Siphonophora |
| Nematocysts | Stinging organelles, Hypnotoxin in Hydra |
| Life Cycle Stages | Planula larva, Ephyra, alternation of polyp and medusa |
| Parasitology & Diseases | Cyclops (Guinea worm host), Wuchereria (elephantiasis), Entamoeba species |
| Sensory Organs | Rhopalia in medusa, tentaculocysts |
| Feeding & Digestion | Prey capture by tentacles and nematocysts, digestibility in Hydra |
| Reproduction | Asexual (budding), Sexual (gonads), regeneration |