V. Choose the letter of the correct answer 21. The largest group of invertebrates is the arthropod group What do all arthropods have in common? A. They live on land and have an exoskeleton C. They have segmented bodies and jointed legs B. They can fiy and have jointed legs. D. They have skeleton and segmented bodies 22 Why do some mollusks have shells? A So they can live both on land and water C. This as a reason why mollusks have shell B. To make it easier to find food D. To protect their soft bodes. 23. All of the following are hollow-bodied animals except A. corals C. jellyfish B. oyster D. sea anemones 24 All invertebrates are animals that A. have hard shells C. have hollow bodies B. have no backbone D. live in the ocean 25. Which of these groups of animals belong to echinoderms? A bees, butterfly and mantis C. earthworm, leeches and tapeworm B. sand dollar, starfish and sea urchins D. spider, ticks and scorpion
