Answer:
1. budding
2. budding
3. fission
4. budding
5. fission
Explanation:
1. Most anemones can reproduce asexually through budding, where fragments break off and develop into new individuals.
2. The common asexual method of reproduction by hydras is budding. Buds originate at the junction of the stalk and gastric regions.
3. Asexual reproduction in starfish takes place by fission or through autotomy of arms. In fission, the central disc breaks into two pieces and each portion then regenerates the missing parts.
4. Sponges reproduce both asexually and sexually. Asexual reproduction occurs by budding. The Figure below shows the sponge life cycle when sexual reproduction is involved. Adult sponges produce eggs and sperm.
5. Through a process called "fission," planarians can reproduce asexually by simply tearing themselves into two pieces -- a head and a tail -- which then go on to form two new worms within about a week. When, where and how this process unfolds has remained a puzzle for centuries due to the difficulty of studying fission.
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