Spiral and determinate cleavage is found in the embryo of:

Correct answer: B. Leech

  • A. Frog
  • B. Leech
  • C. Pigeon
  • D. Brittle star

Explanation

Explanation: Spiral cleavage is a type of embryonic development in which cells divide at oblique angles, resulting in a helical arrangement. Determinate cleavage means that the fate of each embryonic cell is determined early in development. This pattern is characteristic of many protostomes, such as leeches.

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