The hemocoel is an open space in an insect that contains blood outside of the vessels.
Answer the following statement true (T) or false (F)
True
It is true that the hemocoel is an open space in an insect that contains blood outside of the vessels.
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During the Cambrian, reefs were built by _____, but these communities were wiped out by a mass extinction about _____ million years ago
A. calcified sponges; 515 B. bacteria; 515 C. calcified sponges; 600 D. bacteria; 300 E. calcified sponges; 300
The affinity of hemoglobin for oxygen is _______ by lowered blood pH and this ______ oxygen delivery to tissues.
A. increased, increases B. increased, decreases C. decreased, increases D. decreased, decreases E. not affected, does not affect
Which organ system includes the pituitary, thyroid, and adrenal glands?
a. endocrine system b. reproductive system c. lymphatic system d. respiratory system e. skeletal system
A small population size of flowers can pose problems for the plant as a result of
A) poor quality soil. B) lack of space. C) lack of resources. D) lack of pollinator visitation.