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