🌿 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)

7. Animals are mainly grouped under:
   ✅ (d) Vertebrates and invertebrates
8. Does not belong to the group:
   ✅ (a) Mushroom, Yeast, Fern — Fungi (Fern is Plantae, not Fungi)
9. Example of a binomial scientific name:
   ✅ (c) Rana tigrina
10. Correct statement about animals:
    ✅ (b) Donkey and horse belong to two distinct genera.

✍️ Very Short Answer Type

11. Who introduced the binomial system?
    ➡️ Carl Linnaeus
12. Two common characteristics for dog, humans, squirrel, bat, camel, and monkey:
    ✅ (c) External ears
    ✅ (d) Give birth to young ones
13. 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

20. Group Names:

• (a) 🦴 Vertebrates
• (b) 🐾 Mammals
• (c) 🐜 Insects
• (d) 🐦 Aves

21. Invertebrates from the list:
    ✅ Housefly, Silverfish, Jellyfish, Sponge
22. Animals breathing through lungs but lacking external ears:

• Snake (Reptilia)
• Frog (Amphibia)
• Pigeon (Aves)

23. 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

24.  

• (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)

25.  

• (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.

1. 🍼 Mammary glands: Female mammals produce milk to feed their young ones.
2. 🐾 Presence of hair or fur on their body.

📝 28. List two characteristic features of birds (Aves).

1. 🐦 Feathers covering the body.
2. 🥚 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.

1. 🐸 Live both on land and in water.
2. 🌿 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)
  1. Skeleton made of cartilage.
  2. Possess gill slits without an operculum (gill cover).
     ✅ Example: Shark 🦈
• (b) Bony Fish (Osteichthyes)
  1. Skeleton made of bones.
  2. Have a bony operculum covering the gills.
     ✅ Example: Rohu 🐠

📝 Long Answer Type

37.  

• (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.