Rutgers Bio 116 Exam 2 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Correctly sequence the steps of phototropism by plants.
I. Auxin travels in phloem
II. Plant bends toward light
III. Cells elongate
IV. Tip of plant detects light
V. Cell walls weaken - CORRECT ANSWER - IV - I - V - III - II
Which of the following is/are true regarding plant growth?
I.Elongation occurs at meristem
II.Grown pattern is indeterminate
III.Rapid growth occurs in response to high ABA - CORRECT ANSWER - I and II
Which of the following hormone -- function pairs are correct?
I.Auxin - phototropism
II.Cytokinin - regulates cell division
III.ABA - inhibits germination
IV.Ethylene - triple response - CORRECT ANSWER - I, II, III, and IV
Plant cuticles and reptile scales both prevent dessication. Although these two structures have
similar function, plants and reptiles do not share a terrestrial common ancestor. This is an
example of - CORRECT ANSWER - convergent evolution
What are some functions of the shoot system? - CORRECT ANSWER - Photosynthesis,
support leaves, height, transport sugar and water
,Which of the following are TRUE for hormones found in BOTH plants and animals?
I.Can interact with other hormones
II.Can be gasses
III.Can have multiple effects
IV.Can be antagonistic to other hormones
V.Require high concentrations - CORRECT ANSWER - I, II, III, and IV
Functions of dermal tissue - CORRECT ANSWER - Protection, prevention of water loss,
water absorption at root hairs
Functions of ground tissue - CORRECT ANSWER - photosynthesis, storage, support,
short distance transport
Functions of vascular tissue(plants) - CORRECT ANSWER - transport and structural
support
Xylem - CORRECT ANSWER - vascular tissue that carries water upward from the roots
to every part of a plant
cohesion-tension hypothesis - CORRECT ANSWER - transpiration and water cohesion
pull water from shoots to roots
Phloem - CORRECT ANSWER - carries sugar and organic substances throughout a plant,
translocation of sugars from source to sink
pressure-flow hypothesis - CORRECT ANSWER - pressure gradient exists between
source where sugar is loaded into phloem (high pressure) and sink where sugar is removed from
phloem (low pressure)
, plasmodesma - CORRECT ANSWER - an open channel through the cell wall that
connects the cytoplasm of adjacent plant cells, allowing water, small solutes, and some larger
molecules to pass between the cells; continuity between 2 cells
indeterminate growth - CORRECT ANSWER - growth occurs throughout the plant's life
primary growth - CORRECT ANSWER - Growth produced by apical meristems, which
lengthen stems and roots
secondary growth - CORRECT ANSWER - Growth produced by lateral meristems,
thickening the roots and shoots of woody plants
antagonistic hormones - CORRECT ANSWER - hormones that have opposing
physiological properties, but that work together
Scientists have discovered a parasitic fungus whose hyphae invade plants by piercing the cuticle
on leaves. Which of the following best describes the most immediate effect of the fungus on the
plant?
a. Materials will move between adjacent cells less efficiently
b. Water will no longer move from the root xylem into the soil
c. Water will be lost via desiccation
d. Water transport in stem xylem will be inhibited
e. Sugar transport from source to sink will not occur - CORRECT ANSWER -
Auxin - CORRECT ANSWER - a plant hormone that promotes root formation and bud
growth
How does auxin work? - CORRECT ANSWER - auxin work on primary cell walls and
weakens them so they stretch (cell walls fill with H20 and get larger)
ACTUAL Exam Questions and CORRECT
Answers
Correctly sequence the steps of phototropism by plants.
I. Auxin travels in phloem
II. Plant bends toward light
III. Cells elongate
IV. Tip of plant detects light
V. Cell walls weaken - CORRECT ANSWER - IV - I - V - III - II
Which of the following is/are true regarding plant growth?
I.Elongation occurs at meristem
II.Grown pattern is indeterminate
III.Rapid growth occurs in response to high ABA - CORRECT ANSWER - I and II
Which of the following hormone -- function pairs are correct?
I.Auxin - phototropism
II.Cytokinin - regulates cell division
III.ABA - inhibits germination
IV.Ethylene - triple response - CORRECT ANSWER - I, II, III, and IV
Plant cuticles and reptile scales both prevent dessication. Although these two structures have
similar function, plants and reptiles do not share a terrestrial common ancestor. This is an
example of - CORRECT ANSWER - convergent evolution
What are some functions of the shoot system? - CORRECT ANSWER - Photosynthesis,
support leaves, height, transport sugar and water
,Which of the following are TRUE for hormones found in BOTH plants and animals?
I.Can interact with other hormones
II.Can be gasses
III.Can have multiple effects
IV.Can be antagonistic to other hormones
V.Require high concentrations - CORRECT ANSWER - I, II, III, and IV
Functions of dermal tissue - CORRECT ANSWER - Protection, prevention of water loss,
water absorption at root hairs
Functions of ground tissue - CORRECT ANSWER - photosynthesis, storage, support,
short distance transport
Functions of vascular tissue(plants) - CORRECT ANSWER - transport and structural
support
Xylem - CORRECT ANSWER - vascular tissue that carries water upward from the roots
to every part of a plant
cohesion-tension hypothesis - CORRECT ANSWER - transpiration and water cohesion
pull water from shoots to roots
Phloem - CORRECT ANSWER - carries sugar and organic substances throughout a plant,
translocation of sugars from source to sink
pressure-flow hypothesis - CORRECT ANSWER - pressure gradient exists between
source where sugar is loaded into phloem (high pressure) and sink where sugar is removed from
phloem (low pressure)
, plasmodesma - CORRECT ANSWER - an open channel through the cell wall that
connects the cytoplasm of adjacent plant cells, allowing water, small solutes, and some larger
molecules to pass between the cells; continuity between 2 cells
indeterminate growth - CORRECT ANSWER - growth occurs throughout the plant's life
primary growth - CORRECT ANSWER - Growth produced by apical meristems, which
lengthen stems and roots
secondary growth - CORRECT ANSWER - Growth produced by lateral meristems,
thickening the roots and shoots of woody plants
antagonistic hormones - CORRECT ANSWER - hormones that have opposing
physiological properties, but that work together
Scientists have discovered a parasitic fungus whose hyphae invade plants by piercing the cuticle
on leaves. Which of the following best describes the most immediate effect of the fungus on the
plant?
a. Materials will move between adjacent cells less efficiently
b. Water will no longer move from the root xylem into the soil
c. Water will be lost via desiccation
d. Water transport in stem xylem will be inhibited
e. Sugar transport from source to sink will not occur - CORRECT ANSWER -
Auxin - CORRECT ANSWER - a plant hormone that promotes root formation and bud
growth
How does auxin work? - CORRECT ANSWER - auxin work on primary cell walls and
weakens them so they stretch (cell walls fill with H20 and get larger)
