Biology · Class 11 · Chapter 4
Animal Kingdom
12 lessons111 min7 simulations10 practice questions
More than a million animal species have been described, so the chapter first sets up the few body features used to sort them: level of organisation, symmetry, germ layers, body cavity, segmentation and notochord. It then walks through the eleven phyla from Porifera to Chordata, and inside Chordata through the classes from Cyclostomata to Mammalia, giving each group's defining features and standard examples.
Also called: animal classification · phylum chordata · non-chordates
Lessons
12 lessons · 111 min
01Levels of organisationNCERT §4.1, §4.1.17 min02Symmetry and germ layersNCERT §4.1.2, §4.1.39 min1 sim03Coelom, segmentation and notochordNCERT §4.1.4–§4.1.6, Figure 4.413 min2 sims04Sponges, cnidarians and comb jelliesNCERT §4.2.1–§4.2.311 min1 sim05Flatworms, roundworms and annelidsNCERT §4.2.4–§4.2.67 min06Arthropods and molluscsNCERT §4.2.7, §4.2.87 min07Echinoderms and hemichordatesNCERT §4.2.9, §4.2.107 min08Chordates and non-chordatesNCERT §4.2.11, Table 4.110 min1 sim09Jawless and jawed fishesNCERT §4.2.11.1–§4.2.11.310 min1 sim10Amphibians and reptilesNCERT §4.2.11.4, §4.2.11.510 min1 sim11Birds and mammalsNCERT §4.2.11.6, §4.2.11.7, Table 4.27 min12Chapter reviewMust-know facts, traps and formulas13 min
Simulations
7 in this chapter
How many ways can you cut it in half?In: Symmetry and germ layersBuild a body plan, layer by layerIn: Coelom, segmentation and notochordKey out a mystery animalIn: Coelom, segmentation and notochordHow water moves through a spongeIn: Sponges, cnidarians and comb jelliesChordate or not, and where the notochord goesIn: Chordates and non-chordatesStaying up without an air bladderIn: Jawless and jawed fishesHeart chambers and body temperatureIn: Amphibians and reptiles