🌿 Comprehensive Answer Set for ICSE Class 9 Chapter 8: Five Kingdom Classification
🌿 Comprehensive Answer Set for ICSE Class 9 Chapter 8: Five Kingdom Classification with detailed explanations and relevant emojis for better understanding.
1. 🔄 Arrange the Animal Grouping Categories (Highest to Lowest)
Answer:
➡️ Kingdom ➡️ Phylum ➡️ Class ➡️ Genus ➡️ Species
2. ✅ Features Characterizing Vertebrates
Correct Options (✅):
- ✅ Dorsal nerve cord
- ❌ Haemoglobin dissolved
- ❌ Three or more pairs of limbs
- ✅ A tail located behind the anus level
- ✅ Dorsal heart
3. 📚 Identify the Phylum for the Given Characteristics
- Multiple pores acting as water inlets but lacking a single mouth: 🧽 Porifera
- Jointed appendages: 🕷️ Arthropoda
- Body is unsegmented and protected by a hard, calcareous shell: 🐚 Mollusca
- Locomotion by tube feet: 🌊 Echinodermata
- Long, cylindrical, and unsegmented body: 🪱 Nematoda
- Small, flat, unsegmented worms: 🪰 Platyhelminthes
4. 🐾 Name the Phylum of Invertebrates
- Leech: 🪱 Annelida
- Hydra: 🌊 Cnidaria
- Tapeworm: 🪰 Platyhelminthes
- Sea cucumber: 🌊 Echinodermata
- Sponge: 🧽 Porifera
- Roundworm: 🪱 Nematoda
- Scorpion: 🕷️ Arthropoda
- Slug: 🐌 Mollusca
- Centipede: 🐛 Arthropoda
- Butterfly: 🦋 Arthropoda
5. 🔗 Match Characteristics with Respective Classes
| Column I (Characteristics) | Column II (Classes) |
| Three-chambered heart | 🐸 Amphibia |
| Feathers | 🐦 Aves |
| Two-chambered heart | 🐟 Pisces |
| Eardrum in a pit | 🦎 Reptilia |
| Scales | 🐍 Reptilia |
| External ears | 🐾 Mammalia |
| Gills | 🐟 Pisces |
| Moist skin | 🐸 Amphibia |
| Horny scales on skin | 🐍 Reptilia |
| Homeothermal | 🐦 Aves |
| Testes in scrotum | 🐾 Mammalia |
6. 🦎 Mention the Class of Vertebrates
- Crocodile: 🐊 Reptilia
- Penguin: 🐧 Aves
- Toad: 🐸 Amphibia
- Shark: 🦈 Pisces
- Whale: 🐋 Mammalia
- Bat: 🦇 Mammalia
- House lizard: 🦎 Reptilia
🌟 Multiple Choice Questions (MCQs)
- Animals are mainly grouped under:
✅ (d) Vertebrates and invertebrates - Does not belong to the group:
✅ (a) Mushroom, Yeast, Fern — Fungi (Fern is Plantae, not Fungi) - Example of a binomial scientific name:
✅ (c) Rana tigrina - Correct statement about animals:
✅ (b) Donkey and horse belong to two distinct genera.
✍️ Very Short Answer Type
- Who introduced the binomial system?
➡️ Carl Linnaeus - Two common characteristics for dog, humans, squirrel, bat, camel, and monkey:
✅ (c) External ears
✅ (d) Give birth to young ones - Match the items in Column I with Column II:
| Column I | Column II |
| Pine | 🌲 Gymnosperm |
| Earthworm | 🪱 Annelida |
| Bread mould | 🍞 Fungi |
| Amoeba | 🦠 Protista |
| Moss | 🌿 Bryophyta |
| Bacteria | 🦠 Monera |
🌿 Question Set (20 to 36) – Detailed Answers
- Group Names:
- (a) 🦴 Vertebrates
- (b) 🐾 Mammals
- (c) 🐜 Insects
- (d) 🐦 Aves
- Invertebrates from the list:
✅ Housefly, Silverfish, Jellyfish, Sponge - Animals breathing through lungs but lacking external ears:
- Snake (Reptilia)
- Frog (Amphibia)
- Pigeon (Aves)
- Underline the incorrect term in each pair:
- Amoeba — Tentacles ❌ (Amoeba has pseudopodia, not tentacles)
- Fish — Eardrum ❌ (Fishes lack eardrums)
- Whale — Gills ❌ (Whales are mammals and have lungs)
- Monkey — Lateral line system ❌ (Only aquatic animals have it)
📝 Short Answer Type
- (a) Monera, Protista, Fungi, Plantae, Animalia
- (b) Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, Angiosperms
- (c) Porifera, Cnidaria, Platyhelminthes, Nematoda, Annelida, Arthropoda, Mollusca, Echinodermata
- (d) Pisces, Amphibia, Reptilia, Aves, Mammalia
- (e) Cartilaginous (Chondrichthyes) and Bony (Osteichthyes)
- (a) Species: Group of organisms that can interbreed.
- (b) Clitellum: A glandular section in annelids aiding reproduction.
- (c) Moulting: Shedding of old skin by arthropods.
- (d) Diaphragm: Muscle aiding in breathing.
- (e) Nocturnal animals: Active during night (e.g., owls).
📝 26. Differentiate between monocot and dicot plants.
| Feature | 🌾 Monocot | 🌿 Dicot |
| Number of Cotyledons | One | Two |
| Leaf Venation | Parallel | Reticulate (net-like) |
| Root System | Fibrous | Taproot |
| Vascular Bundles | Scattered | Arranged in a ring |
| Floral Parts | Multiples of three (e.g., 3, 6) | Multiples of four or five |
📝 27. List two characteristic features of mammals.
- 🍼 Mammary glands: Female mammals produce milk to feed their young ones.
- 🐾 Presence of hair or fur on their body.
📝 28. List two characteristic features of birds (Aves).
- 🐦 Feathers covering the body.
- 🥚 Oviparous (lay eggs with hard shells).
📝 29. Name two organisms from each: Monera, Protista, and Fungi.
- Monera: 🦠 Escherichia coli, Streptococcus
- Protista: 🦠 Amoeba, Paramecium
- Fungi: 🍄 Mushroom, 🍞 Bread mould
📝 30. State two features of amphibians.
- 🐸 Live both on land and in water.
- 🌿 Moist skin that assists in respiration.
📝 31. Write two differences between reptiles and amphibians.
| Feature | 🐍 Reptiles | 🐸 Amphibians |
| Skin Texture | Dry, scaly | Moist, smooth |
| Respiration | Lungs only | Through skin and lungs |
| Habitat | Mainly terrestrial | Both aquatic and terrestrial |
📝 32. Define binomial nomenclature. Who proposed it?
- Binomial nomenclature is a system of naming organisms using two Latin words: the genus name (capitalized) and the species name (lowercase).
- ✅ Proposed by: Carl Linnaeus.
📝 33. Give one example of the following:
- (a) A cartilaginous fish: 🦈 Shark
- (b) A bony fish: 🐠 Rohu
- (c) A flightless bird: 🐧 Penguin
- (d) An egg-laying mammal: 🦘 Platypus
- (e) A warm-blooded animal: 🐾 Human
📝 34. Give reasons for the following statements:
- (a) Birds have hollow bones.
➡️ To make their body lightweight for easy flight. ✈️ - (b) Whales and bats are mammals.
➡️ They have mammary glands and give birth to live young ones. 🐋🦇 - (c) Frogs can live both on land and in water.
➡️ Frogs have lungs for breathing on land and can respire through their moist skin in water. 🌿💧 - (d) Reptiles lay eggs with hard shells.
➡️ To protect the embryo from desiccation and damage in dry habitats. 🥚
📝 35. Differentiate between invertebrates and vertebrates.
| Feature | 🐜 Invertebrates | 🐻 Vertebrates |
| Backbone | Absence of a vertebral column | Presence of a vertebral column |
| Examples | Insects, worms, sponges | Fishes, birds, reptiles, mammals |
| Complexity | Simple body structure | Complex body structure with an internal skeleton |
📝 36. Write two features of each:
- (a) Cartilaginous Fish (Chondrichthyes)
- Skeleton made of cartilage.
- Possess gill slits without an operculum (gill cover).
✅ Example: Shark 🦈
- (b) Bony Fish (Osteichthyes)
- Skeleton made of bones.
- Have a bony operculum covering the gills.
✅ Example: Rohu 🐠
📝 Long Answer Type
- (a) Invertebrates lack a backbone, while vertebrates have one.
- (b) Ectothermal animals’ body temperature varies, but homeothermal animals maintain constant body temperature.
- (c) Monera includes prokaryotic organisms, while Protista includes eukaryotic unicellular organisms.
- (d) Bryophytes are non-vascular plants, whereas Pteridophytes are vascular.
- (e) Roundworms have cylindrical bodies; Ringed worms have segmented bodies.
📝 38. Define and differentiate between cold-blooded and warm-blooded (homeothermal) animals.
❄️ Cold-blooded Animals (Ectothermic)
- Cold-blooded animals are those whose body temperature changes with the surrounding environment. 🌡️
- They cannot regulate their internal body temperature.
- To stay warm or cool, they depend on external sources like sunlight or shade. ☀️🌳
- Their metabolic activities slow down in cold conditions. ❄️
✅ Examples:
- 🐍 Reptiles (like snakes, lizards)
- 🐸 Amphibians (like frogs, toads)
- 🐟 Fishes
🔥 Warm-blooded Animals (Homeothermal)
- Warm-blooded animals can maintain a constant internal body temperature regardless of the external environment. 🌡️
- They have efficient metabolic processes to regulate temperature by sweating, shivering, or panting. 💦❄️
- They remain active in both hot and cold climates.
✅ Examples:
- 🐦 Birds (like pigeons, eagles)
- 🐻 Mammals (like humans, dogs, lions)
✅ Key Differences
| Feature | ❄️ Cold-blooded | 🔥 Warm-blooded |
| Temperature Control | Depends on the environment. | Maintains constant internal temperature. |
| Metabolic Rate | Slows down in cold conditions. | Remains active in various temperatures. |
| Adaptation | Basks in the sun or stays in shade. | Uses physiological mechanisms like sweating. |
| Examples | Fish, amphibians, reptiles. | Birds, mammals. |
