TAMU ENTO 201 Exam 1 Questions with
Verified Correct Answers
When and where did life begin?
In the sea 3.5 billion years ago
The oceans are still home to most of the Earth's what?
phyla
Phyla
plural of phylum, major groupings of the animal kingdom and are comprised of superclasses,
classes, etc.
Examples of phyla
Mollusca, Arthropods, Chordata, etc.
sequence of taxonomic categories
Kingdom > Phylum > Superclass > Class > Order > Family > Genus > Species
What is the fundamental unit of systematics and taxonomy
species sometimes subspecies
Insects are what portion of all described species?
>1/2
What fraction of insects do we know?
1/8
Colonial Theory hypothesis
, as a unicellular organism divided, the daughter cells failed to separate, resulting in a
conglomeration of identical cells in one organism, which could later develop specialized
tissues
What was first to colonize land?
plants, followed by the first invertebrate and vertebrate colonizers
first invertebrates on land
primitive crustaceans
Plants account for what percent of global biomass?
78%
What portion of insects feed on plants?
1/2
How many insects are alive today?
1x10^19
Trophic level
levels of food or energy transfer in a foodchain
first trophic level
plants or autotrophs
second trophic level
herbivores
third trophic level
Verified Correct Answers
When and where did life begin?
In the sea 3.5 billion years ago
The oceans are still home to most of the Earth's what?
phyla
Phyla
plural of phylum, major groupings of the animal kingdom and are comprised of superclasses,
classes, etc.
Examples of phyla
Mollusca, Arthropods, Chordata, etc.
sequence of taxonomic categories
Kingdom > Phylum > Superclass > Class > Order > Family > Genus > Species
What is the fundamental unit of systematics and taxonomy
species sometimes subspecies
Insects are what portion of all described species?
>1/2
What fraction of insects do we know?
1/8
Colonial Theory hypothesis
, as a unicellular organism divided, the daughter cells failed to separate, resulting in a
conglomeration of identical cells in one organism, which could later develop specialized
tissues
What was first to colonize land?
plants, followed by the first invertebrate and vertebrate colonizers
first invertebrates on land
primitive crustaceans
Plants account for what percent of global biomass?
78%
What portion of insects feed on plants?
1/2
How many insects are alive today?
1x10^19
Trophic level
levels of food or energy transfer in a foodchain
first trophic level
plants or autotrophs
second trophic level
herbivores
third trophic level
