Thiomargarita species utilize large amounts of ________ .
A. nitrate
B. carbon dioxide
C. oxygen
D. sulfur
Answer: D
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In Arabidopsis, the floral meristem is organized into four concentric whorls of cells, each of which gives rise to a specific organ of the mature flower. The floral meristem is therefore analogous to what cells or tissues in animals?
A. totipotent stem cells B. cells in the morula C. the inner cell mass of the blastula D. the germ layers of the gastrula E. None of these choices is correct.
Exhalation is a passive process unless we must forcibly exhale
a. true b. false
The driving force that pushes the root tip through the soil is primarily _____
A) continuous cell division in the root cap at the tip of the root B) continuous cell division just behind the root cap in the center of the apical meristem C) elongation of cells behind the root apical meristem D) continuous cell division of root cap cells
Territories are typically used for activities such as
A) feeding, mating, and rearing young. B) migration and feeding. C) identification of kin and rearing young. D) feeding and identification of kin.