DAT EXAM QUESTIONS WITH VERIFIED
ANSWERS; 100% CORRECT; GRADE A
A species of desert plant secretes a chemical into the
surrounding soil that kills seeds from any other species of plant
that attempts to germinate in that area. What is this an example
of?
A. Commensalism
B. Allelopathy
C. Exploitation competition
D. Apparent competition
E. Intraspecific competition - correct answer- B.
Allelopathy
Blood in the pulmonary vein would be best characterized as
which of the following?
A. High in CO2
B. Low in O2
C. High in CO2
D. Low in iron
E. High in NaCl - correct answer- C. High in O2
, Characteristics of Annelida - correct answer- Complete
digestive system
Triploblasts with bilateral symmetry
Coelomates with segmented bodies
Close circulatory systems
Examples: Earthworms and leeches
Characteristics of Echinodermata - correct answer-
Complete digestive system
Triploblasts with radial symmetry
Coelomates
Open circulatory system
Deuterostomes
Examples: Starfish, sea urchins, and sea cucumbers
Characteristics of Nematoda - correct answer- Complete
digestive system, triploblasts with bilateral symmetry,
pseudocoelomates. Parasitic; contain a thick protective outer
layer known as the cuticle
Examples: round worms, hook worms, and C.elegans
ANSWERS; 100% CORRECT; GRADE A
A species of desert plant secretes a chemical into the
surrounding soil that kills seeds from any other species of plant
that attempts to germinate in that area. What is this an example
of?
A. Commensalism
B. Allelopathy
C. Exploitation competition
D. Apparent competition
E. Intraspecific competition - correct answer- B.
Allelopathy
Blood in the pulmonary vein would be best characterized as
which of the following?
A. High in CO2
B. Low in O2
C. High in CO2
D. Low in iron
E. High in NaCl - correct answer- C. High in O2
, Characteristics of Annelida - correct answer- Complete
digestive system
Triploblasts with bilateral symmetry
Coelomates with segmented bodies
Close circulatory systems
Examples: Earthworms and leeches
Characteristics of Echinodermata - correct answer-
Complete digestive system
Triploblasts with radial symmetry
Coelomates
Open circulatory system
Deuterostomes
Examples: Starfish, sea urchins, and sea cucumbers
Characteristics of Nematoda - correct answer- Complete
digestive system, triploblasts with bilateral symmetry,
pseudocoelomates. Parasitic; contain a thick protective outer
layer known as the cuticle
Examples: round worms, hook worms, and C.elegans
