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CBSE Class 11 Animal Kingdom — Basis of Classification + Major Phyla (Porifera through Chordata) — practice questions
16 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 Animal Kingdom — Basis of Classification + Major Phyla (Porifera through Chordata) in the app →In SPONGES (Porifera), the level of body organisation is:Diploblastic animals have two embryonic germ layers — ectoderm and:Animals possessing a body cavity (coelom) LINED BY MESODERM are called:Identify the phylum whose members have CHOANOCYTES (collar cells) lining the spongocoel.CNIDOBLASTS (with stinging nematocysts) are found in members of phylum:In Coelenterates, animals that exist as both POLYP and MEDUSA forms show:Phylum Aschelminthes is characterised by:Identify the largest phylum of Animalia — accounting for over TWO-THIRDS of all named species on Earth.Metameric segmentation (true serial body segmentation with repetition of organs) characterises phylum:FLAME CELLS (for osmoregulation and excretion) are characteristic of:The WATER VASCULAR SYSTEM (for locomotion, food capture and transport, respiration) is the most distinctive feIdentify the chordate features that distinguish them from non-chordates.HEMICHORDATA was earlier placed under Chordata but is now classified as a separate phylum under non-chordata bIdentify the phylum where animals are MOSTLY HERMAPHRODITE (eggs and sperms in the same individual) and have aBioluminescence (light emission) is most well-marked in:In Mollusca, the file-like rasping organ used for feeding is called: