Tentacle

High school (ages 12+)
Animals & Nature

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/tentacle

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the scientific classification?Flexible, mobile, elongated appendages found primarily in invertebrates
2. What is the biomechanical principle?Often function as muscular hydrostats, enabling complex movements through muscle action alone
3. What are tentacles and what do they do?Tentacles are flexible, mobile arms that animals use to grab, taste, and sometimes see. They help with moving, eating, protecting, and sensing.
4. How do tentacles move without bones?They are muscular hydrostats, meaning muscles and fluid inside let them bend and shape without a skeleton.

Muscular Hydrostat: A biological structure composed primarily of muscle tissue, capable of changing shape and volume without skeletal support.
Invertebrate: An animal lacking a vertebral column, representing the vast majority of animal species on Earth.
Chemoreceptors: Sensory receptors that detect chemical stimuli, enabling organisms to perceive taste and smell.