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Towards modernisation

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Class 10 Class 12

Which one of the following statements is incorrect?

  • Mesoglea is present in between ectoderm and endoderm in Obelia.

  • Radial symmetry is found in Asterias

  • Fasciola is a pseudocoelomate animal
  • Taenia is a triploblastic animal

C.

Fasciola is a pseudocoelomate animal

Which of the following pairs of animals has non-glandular skin

  • Snake and Frog

  • Chameleon and Turtle

  • Frog and Pigeon

  • Crocodile and Tiger


B.

Chameleon and Turtle


Birds and mammals share one of the following characteristics as a common feature.

  • Pigmented skin

  • Alimentary canal with some modification

  • Vivipary

  • Warm-blooded nature


D.

Warm-blooded nature


Which one of the following sets of animals belongs to a single taxonomic group?

  • Cuttlefish, Jellyfish, Silverfish, Dogfish, Starfish

  • Bat, Pigeon, Butterfly

  • Monkey, Chimpanzee, Man

  • Silkworm, Tapeworm, Earthworm


C.

Monkey, Chimpanzee, Man


Which one of the following statements is incorrect?

  • In cockroaches and prawns excretion of waste material occurs through malpighian tubules.

  • In ctenophors, locomotion is mediated by comb plates.

  • In Fasciola flame cells take part in excretion

  • Earthworms are hermaphrodites and yet cross-fertilization takes place among them.


A.

In cockroaches and prawns excretion of waste material occurs through malpighian tubules.