TAMU ENTO 201 Bernal Exam 1 Questions
with Verified Correct Answers
How long ago did life begin?
3.5 Billion years ago
Define: Phylum
A taxanomic group of organism types
Define: Species
The fundamental unit of systematics and taxonomy
What percent of all described species are insects?
~ 50%
Define: Colonial Theory Hypothesis
During unicellular division, cells failed to separate. Over time this evolved into multicellular
organisms.
What are suspected to have been the first invertebrates on land?
Crustaceans
Define: Phytophage
Plant eater
Are plants or athropods dominant in terms of biomass?
Plants @ ~78%
Define: Trophic Level
, Levels of food/energy transfer in a foodchain
Define: Entomophilous Plants
Insect loving plants - these plants depend on insects for pollination
Wasp like organisms are classified under ___________.
Hymenoptera
Fly like organisms are classified under ___________.
Diptera
Intangible effects of insects on humans
Tend to be indirect and positive
Tangible effects of insects on humans
Tend to affect us directly and are generally negative
Insects account for what percent of lost food for Americans?
15-20%
What percent of insects are pests?
0.125%
Parasitoids generally favor which gender?
Female
Approximately how old is Earth?
4600 Million years old
How long ago are algae estimated to have first emerged?
with Verified Correct Answers
How long ago did life begin?
3.5 Billion years ago
Define: Phylum
A taxanomic group of organism types
Define: Species
The fundamental unit of systematics and taxonomy
What percent of all described species are insects?
~ 50%
Define: Colonial Theory Hypothesis
During unicellular division, cells failed to separate. Over time this evolved into multicellular
organisms.
What are suspected to have been the first invertebrates on land?
Crustaceans
Define: Phytophage
Plant eater
Are plants or athropods dominant in terms of biomass?
Plants @ ~78%
Define: Trophic Level
, Levels of food/energy transfer in a foodchain
Define: Entomophilous Plants
Insect loving plants - these plants depend on insects for pollination
Wasp like organisms are classified under ___________.
Hymenoptera
Fly like organisms are classified under ___________.
Diptera
Intangible effects of insects on humans
Tend to be indirect and positive
Tangible effects of insects on humans
Tend to affect us directly and are generally negative
Insects account for what percent of lost food for Americans?
15-20%
What percent of insects are pests?
0.125%
Parasitoids generally favor which gender?
Female
Approximately how old is Earth?
4600 Million years old
How long ago are algae estimated to have first emerged?
