A pine tree is a(n) ____, and a pine cone is a(n) ____
a. angiosperm; a seed
b. haploid plant body; dipold plant body
c. sporophyte; a gametophyte
d. gametophye; a sporophye
e. egg; pollen grain
c
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The latitudinal diversity gradient refers to what pattern of species diversity?
A. For many kinds of organisms, species diversity is greatest near the equator and lowest near the poles. B. For many kinds of organisms, species diversity is greatest near the poles and lowest near the equator. C. For many kinds of organisms, species diversity is greatest at low elevation and lowest at high elevation. D. For many kinds of organisms, species diversity is greatest at high elevation and lowest at low elevation. E. Plants are most diverse near the equator while animals are most diverse toward the poles.
Place the following organisms in order of appearance in the fossil record, beginning with the earliest
A. ferns, algae, flowering plants, gymnosperms B. amphibians, reptiles, fish, mammals What will be an ideal response?
Most biologists agree that the most important metabolic pathway of living organisms is photosynthesis because its products directly or indirectly affect most living organisms.
a. true b. false
Why is lymphatic tissue found all along the GI tract?
A) Different pathogens are activated at different points along the digestive tract, and the location of the lymphatic tissue allows the host to respond according to which pathogen is activating in that area. B) When an infection occurs, these lymphatic tissues are able to quickly stop digestion and the movement of the GI contents so that the infection doesn't spread throughout the body. C) Upon infection in a specific area of the GI tract, a response can quickly be delivered and flood the lumen of the GI tract in that region. D) When an infection occurs, these lymphatic tissues are able to quickly trigger an inflammatory response along the entire GI tract. E) Cells in these lymphatic tissues "sample" the environment by phagocytosis and present their findings to lymphocytes that may or may not need to initiate an immune response.