Which of thfollowing elements is obtaineby plants directly frothatmosphere?
A) nitrogen
B) hydrogen
C) carbon
D) iron
E) sulfur
Correct Answer:
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Q43: Which of thfollowing is also a lateral
Q44: Thsoil particles that holdissolvenutrients best arcomposeof
A)sand.
B)clay.
C)humus.
D)silt.
E)quartzite.
Q45: Most monocots havnumerous _ roots arising frothstem.
A)adventitious
B)primary
C)fibrous
D)secondary
E)tap
Q46: Which of thfollowing statements is FALSE?
A)Xylem conducts
Q47: Secondary xyleis formein association with the
A)pith.
B)inner face
Q49: Which of thfollowing is in contact with
Q50: Chlorosis androopeleaves arcauseby a deficiency of
A)nitrogen.
B)potassium.
C)sulfur.
D)phosphorus.
E)magnesium.
Q51: Thoxygen needeby plants is ultimately derivefrom
A)aerobic respiration.
B)photosynthesis.
C)anaerobic
Q52: Lateral meristems
A)are groups of dividing cells.
B)are responsible
Q53: Thnodules founon throots of plants callelegumes
A)are abnormal
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