A Warm Body, Sharp Senses: teacher key

Mako Sharks, grade 7 edition, written for 7th grade. A mako keeps its body warmer than the water. See how its senses work, how fast it swims and how it lives.

Read the book. Print this page for the key.

Questions and answers

1. How much warmer than the water can a mako keep its body?
   • 60 to 80 degrees Celsius
   • 6 to 8 degrees Celsius (answer)
   • Not at all
2. What helps a mako see in low light?
   • Whiskers
   • Gills
   • Millions of rod cells and a layer that reflects light (answer)
3. What did studied makos in the northwest Atlantic eat most by weight?
   • Bluefish (answer)
   • Seaweed
   • Clams
4. What is little known about makos?
   • Their color
   • The size of their home ranges (answer)
   • Their teeth
5. Why is a mako's top speed hard to state?
   • Makos never swim
   • Makos have no tail
   • Few direct speed measurements have been reported (answer)
6. What does CITES Appendix II do?
   • Monitors international trade (answer)
   • Bans all fishing
   • Counts pups

Words

• solitary: living alone
• nares: nose holes
• bluefish: a sea fish
• retina: back of eye