Why are waterlogged soils often infertile?
A. Nitrifying bacteria require oxygen, and the excess water takes the place of oxygen-containing air.
B. Water molecules are used instead of oxygen for cellular respiration.
C. There is less carbon in waterlogged soil than dry soil.
D. The lack of physical space in this type of soil blocks bacterial growth.
Answer: A
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a. xylem b. dermal c. phloem d. meristem
Which of the following responses is NOT controlled
by plant hormones? a. the growth form of the plant (apical dominance) b. the beginning and ending of dormancy c. the bending of an oat coleoptile toward light d. the production of glucose by the chloroplast e. the formation of abscission zones
The two types of connective tissue in the skeletal system are _______ and cartilage (in joints)
Fill in the blank(s) with correct word
How might a species' range be extended?
A) through increased migration rates B) through increased immigration rates C) through climate change D) through decreased reproductive rates