skeleton
Their limestone skeletons build reefs over time. This topic is part of Human Body within Science & Nature. This page currently draws on 29 supporting questions, with answers and bonus facts available below.
skeleton trivia questions
The human skeleton is made mainly of what?
Answer: Bones
Bonus fact: Bones provide support and protection.
Reef-building coral polyps secrete skeletons made mainly of what?
Answer: Calcium carbonate
Bonus fact: Their limestone skeletons build reefs over time.
Which muscle type is under voluntary control and moves the skeleton?
Answer: Skeletal muscle
Bonus fact: Skeletal muscles attach to bones through tendons.
Lucy is the famous fossil skeleton of which species?
Answer: Australopithecus afarensis
Bonus fact: Lucy lived about 3.2 million years ago.
Which ions become less abundant as ocean acidification progresses and are important building blocks for seashells and coral skeletons?
Answer: Carbonate ions
Bonus fact: Absorbed carbon dioxide increases hydrogen-ion concentration in seawater, lowering pH.
“Lucy,” the famous 3.2-million-year-old partial skeleton, belongs to which species?
Answer: Australopithecus afarensis
Bonus fact: Lucy was found at Hadar, Ethiopia, and is cataloged as AL 288-1.
About how many bones are in the adult human skeleton?
Answer: 206
Bonus fact: Babies have more bones than adults because some bones fuse as they grow.
Which animal group has segmented bodies, jointed legs, and external skeletons and is the only group of winged invertebrates?
Answer: Insects
Bonus fact: Not all insects have wings, but insects are the only invertebrates that evolved powered flight.
Sharks and rays belong to which class of fishes characterized by skeletons made of cartilage?
Answer: Chondrichthyes
Bonus fact: Chondrichthyes includes sharks, rays, skates, and chimaeras.
What is the name of the rigid external skeleton that supports and protects an insect's body?
Answer: Exoskeleton
Bonus fact: Insect exoskeletons are made largely of chitin and must be shed for growth.
An endoskeleton is a skeleton located where?
Answer: Inside the body
Bonus fact: Vertebrates have internal skeletons.
Humans have what type of skeleton?
Answer: Endoskeleton
Bonus fact: The human skeleton lies inside the body.