Soil particles composed of decomposing organic matter are called ____
a. sand
b. humus
c. silt
d. clay
e. mineral
ANSWER: b
Biology & Microbiology
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In humans, the structure in which T lymphocytes mature is called the ____________
A. thymus B. bone marrow C. lymph node D. bursa of fabricus
Biology & Microbiology
Microorganisms in soil are located in thin water films on particle surfaces where oxygen is present at high levels.
Answer the following statement true (T) or false (F)
Biology & Microbiology
The site of new primary growth at the apex of a shoot is the ____
a. terminal bud b. internode c. axil d. lateral bud e. node
Biology & Microbiology
Which of the following does not characterize arthropods?
A. presence of a coelom B. segmentation C. an open circulatory system D. an exoskeleton E. an incomplete digestive tract
Biology & Microbiology