Multiple choice

If it is considered that the first sponges originated from protozoans, which of the following types of protozoans would have been their ancestors? I. Zooflagellates living in colonies  II. Sarcodines with parasitic nutrition III. Ciliates with many nuclei IV. Sporozoans living in colonies Select the correct answer using the codes given below:

  1. III and IV

  2. I alone

  3. II and III

  4. III alone
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 Sponges have evolved from colonial choanoflagellates.

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