Ch. 37 Questions

Question 1

Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?

a. H2O & O2
b. CO2 & glucose
c. ATP & NADPH
d. ADP, Pi & NADP+
e. electrons & H+

Answer 1

c. ATP & NADPH

Question 2

When oxygen is released as a result of photosynthesis, it is a direct by-product of _________.

a. reducing NADP+
b. the electron transfer system of photosystem I
c. the electron transfer system of photosystem II
d. chemiosmosis
e. splitting water molecules

Answer 2

e. splitting water molecules

Question 3

Which of the following sequences correctly represents the flow of electrons during photosynthesis?

a. NADPH -> chlorophyll -> Calvin cycle
b. H2O -> NADPH -> Calvin cycle
c. NADPH -> electron transport chain -> O2
d. NADPH -> O2 -> CO2
e. H2O -> photosystem I -> photosystem II

Answer 3

b. H2O -> NADPH -> Calvin cycle

Question 4

The proteins of the electron transport chain active in the light-dependent reactions _____.

a. are free proteins present in the thylakoid lumen
b. absorb the same wavelengths of light as their associated chlorophylls
c. are membrane proteins present in the thylakoid
d. are considered to be part of the reaction center of photosystem I

Answer 4

c. are membrane proteins present in the thylakoid

Question 5

Compared to most animals, the growth of most plants is best described as

a. perennial
b. weedy
c. indeterminate
d. derivative
e. primary.

Answer 5

c. indeterminate

Question 6

The surface area of a plant’s root system is substantially larger than the surface area of its shoot system. The extensive surface area of roots is an adaptation associated with ________.

a. the internal structure of the vascular tissue in roots
b. contact with soil particles for mineral and water absorption
c. the release of carbon dioxide generated by photosynthesis
d. the storage of nutrients within the root system

Answer 6

b. contact with soil particles for mineral and water absorption

Question 7

While walking a cornfield, you notice roots emerging from the corn stalks themselves, and you suspect that these roots are helping to hold the plants upright. These roots belong to a category of roots known as

a. adventitious roots
b. taproots
c. special roots
d. root hairs
e. fibrous roots

Answer 7

a. adventitious roots

Question 8

Which of the following arise, directly or indirectly, from meristematic activity?

a. secondary xylem
b. leaves
c. tubers
d. dermal tissue
e. all of the above

Answer 8

e. all of the above

Question 9

The following question is based on parts of a growing primary root.
I. root cap
II. zone of elongation
III. zone of cell division
IV. zone of cell differentiation / maturation
V. apical meristem

Which of the following is the correct sequence from the growing tips of a root back towards its base?

a. III, V, I, II, IV
b. I, II, V, III, IV
c. V, II, III, I, IV
d. II, IV, I, V, III
e. I, V, III, II, IV

Answer 9

e. I, V, III, II, IV

Question 10

Some botanists argue that the entire plant should be considered a single unit rather than a composite of many individual cells. Which of the following cellular structures best supports this view?

a. cell membrane
b. vacuole
c. cell wall
d. cytosol
e. plasmodesmata

Answer 10

e. plasmodesmata