Class 5 Unit-4 (Classification of Organism)
Unit-4 Classification of Organisms Exercise D. Differentiate between: 1️ ⃣ Vertebrate and invertebrate Vertebrates have backbone. Invertebrates do not have backbone. 2️ ⃣ Pisces and amphibia Pisces (fishes) live only in water and have gills. Amphibians can live both in water and on land, and have lungs and moist skin. 3️ ⃣ Pisces and aves Pisces live in water, have fins and gills. Aves (birds) have feathers, wings, and can fly. 4️ ⃣ Amphibian and reptile Amphibians have moist skin and live both in water and on land. Reptiles have dry, scaly skin and mostly live on land. E. Give reasons: 1️ ⃣ Fishes have fins. 👉 To swim and maintain balance in water. 2️ ⃣ Fishes have gills. 👉 To breathe oxygen dissolved in water. 3️ ⃣ Birds have pneumatic bones. 👉 To make their body light and help them in flying. F. Very short answer type questions: 1️ ⃣ Name any two ...