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NTA Abhyas NEET2020BotanyAnimal KingdomPractice

Select the correct option with respect to characteristic features of given animals: a. Annelida: Metamerically segmented and schizocoelomate animals. b. Arthropoda: Jointed appendages with a closed circulatory system. c. Ctenophora: Shows bioluminescence and also known as sea walnuts. d. Porifera: Archaeocytes are called collar cells, lines the spongocoel.

Options

  1. Aa , b , c are correct
  2. Ba , c , d are correct
  3. Cb and d are incorrect
  4. Donly d is incorrect

Correct answer

C. b and d are incorrect

Step-by-step solution

Arthropoda has jointed appendages, chitinous exoskeleton and open circulatory system called haemocoel. Porifera has totipotent cells called archaeocytes, which can give rise to any cells, whereas choanocytes are collar cells lineing the spongocoel.

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