ENT 101 EXAM PREP TEST BANK VERIFIED
QUESTIONS AND CORRECT ANSWERS
●● Descent with modification
Answer: species change over time from common ancestors
●● What is a node in a phylogenetic tree?
Answer: a common ancestor
●● What is a branch on a phylogenetic tree?
Answer: an evloutionary lineage
●● What is MRCA
Answer: most recent common ancestor
●● Monophyletic group
Answer: ancestor missing some descendants
●● Why are insects so diverse?
Answer: small size, flight, fast reproduction, exoskeleton,
matamorphosis
, ●● What did Terry Erwin estimate?
Answer: Millions of insect species may exist worldwide
●● What is host specificity?
Answer: insects living on only host plant species
●● What was the Cambrian Explosion?
Answer: rapid appearance of majore animal groups ~530 million years
ago
●● Main arthropod characteristics?
Answer: segmented body, exoskeleton, jointed appendages
●● What are chelicerates?
Answer: spiders and scorpions
●● What are myriapods?
Answer: centipedes and millipedes
●● What are crustaceans?
Answer: crabs and shrimp
QUESTIONS AND CORRECT ANSWERS
●● Descent with modification
Answer: species change over time from common ancestors
●● What is a node in a phylogenetic tree?
Answer: a common ancestor
●● What is a branch on a phylogenetic tree?
Answer: an evloutionary lineage
●● What is MRCA
Answer: most recent common ancestor
●● Monophyletic group
Answer: ancestor missing some descendants
●● Why are insects so diverse?
Answer: small size, flight, fast reproduction, exoskeleton,
matamorphosis
, ●● What did Terry Erwin estimate?
Answer: Millions of insect species may exist worldwide
●● What is host specificity?
Answer: insects living on only host plant species
●● What was the Cambrian Explosion?
Answer: rapid appearance of majore animal groups ~530 million years
ago
●● Main arthropod characteristics?
Answer: segmented body, exoskeleton, jointed appendages
●● What are chelicerates?
Answer: spiders and scorpions
●● What are myriapods?
Answer: centipedes and millipedes
●● What are crustaceans?
Answer: crabs and shrimp