T cells and B cells are produced in the
A. bone marrow.
B. thymus.
C. Peyer's patches.
D. nervous tissue.
A
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Consider the transition from water to land for plants. Reproduction that was not tied to water was an important adaptation allowing plants to exploit truly terrestrial habitats. Animals faced the same challenge when moving from water to land
What was the single most important adaptation that led to the uncoupling of reproduction and the need for water? A. amniotic egg B. internal fertilization C. loss of flagellated sperm
Phytochromes are pigment proteins that allow plants to detect light
a. True b. False
The light dependent reactions do not produce ____
a. glucose b. oxygen c. ATP d. NADPH e. H+
The coronary sinus drains blood directly into the:a
inferior vena cava. b. superior vena cava. c. left atrium. d. right atrium. e. coronary arteries.