Which of the following pairs are correctly matched? $ \begin{array}{|l|l|l|} \hline & \text{Animals} &…

Which of the following pairs are correctly matched? $ \begin{array}{|l|l|l|} \hline & \text{Animals} & \begin{array}{c} \text{Morphological} \\ \text{feature} \end{array} \\ \hline \text{(i)} & \text{Crocodile} & \begin{array}{l} \text{4-chambered} \\ \text{heart} \end{array} \\ \hline \text{(ii)} & \text{Sea urchin} & \text{Parapodia} \\ \hline \text{(iii)} & \text{Obelia} & \text{Metagenesis} \\ \hline \text{(iv)} & \text{Lemur} & \text{Thecodont} \\ \hline \end{array} $
  1. (ii), (iii) and (iv)
  2. only (i) and (iv)
  3. only (i) and (ii)
  4. (i), (iii) and (iv).

Solution

Crocodile belongs to Reptilia class which has four chambered heart. Lemur teeth are embedded in the sockets of two which is known as thecodont. In Obelia, polyps reproduce medusae asexually and medusae form the polyps sexually. Such alternation of sexual phases in the life cycle is called metagenesis. Parapodia are present in Annelida, while sea urchin is a Echinodermata.

Asked in: NEET 2007

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