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Function of Flowers - Botany - Exam, Exams of Botany and Agronomy

These are the important key points of exam of Botany are:Function of Flowers, Produce Sugars, Water Transport, Cellular Organelles, Pollen Grains, Gene Encoding, Soil Bound Mineral Nutrients, Osmotic Potential, Flower Diagram, Driving Force Or Mechanism

Typology: Exams

2012/2013

Uploaded on 01/09/2013

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Biology NAME:______________________
DIRECTIONS: Write or print your name legibly on this exam and on your Scantron form. When you are
finished, turn in both the exam and your Scantron form. Good luck!!
Section 1 - Multiple Choice (50 points). Select the best correct answer for each question. Circle the
answer on your exam and fill in the appropriate box on your Scantron form.
1. The primary function of flowers is
A. protection B. produce sugars C. water transport D. photosynthesis E. reproduction
2. The cellular organelles in which photosynthesis occurs are the
A. synergids B. chlorophylls C. leaves D. chloroplasts E. mesophylls
3. Pollination refers to
A. the development of pollen grains from microsporocytes.
B. the fertilization of an egg with a pollen grain.
C. the placement of pollen on an insect visiting a flower.
D. the transfer of pollen from stamen to a stigma of a flower
E. the transfer of pollen from pistils to the stamen of a flower
4. A fruit consists mostly of cells/tissues derived from
A. an ovary B. a leaf C. an embryo D. a stamen E. endosperm
5. Suppose a plant had a point mutation in the gene encoding the enzyme RUBISCO, such that it
catalytic activity was reduced by 90%. What would be the consequence to the plant?
A. Its leaves would lack chlorophyll D. It would produce less glucose.
B. Its flowers would be imperfect E. Its stomata would not open.
C. It would have fewer chloroplasts in its mesophyll
6. The process by which plants acquire soil-bound mineral nutrients is called
A. Chemiosmosis B. Cation exchange C. Photosynthesis D. Transpiration E. Pressure-flow
7. The mechanism by which sugar is transported from a source to a sink involves
A. Changes in osmotic potential B. Changes in pressure potential C. Chemiosmosis
D. All of these E. Both A and B.
8. The term monoecious refers to
A. plants that produce a single terminal flower at the end of each stem.
B. only one type of flower per plant – either male flowers or female flowers, but not both.
C. plants that flower only once in a lifetime.
D. plants that self-pollinate.
E. plants possesing separate male and female flowers (on the same plant).
9. Suppose that a plant incurs a mutation which prevents it from producing synergids. What would be
the most likely consequence?
A. The plant would not produce flowers
B. The plant would produce flowers, but they would be self-incompatible.
C. The plant would not be able to engage in cation exchange.
D. The frequency of fertilization would be reduced.
E. It would wilt, due to excessive transpiration.
10. The flower diagram for short answer question #1 depicts a plant with _____ flowers. (Note that some
parts of the flower have been partially cut away in order to see inside the flower)
A. perfect, complete B. perfect, incomplete C. imperfect, complete
D. imperfect, incomplete E. imperfect, indeterminate
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Biology NAME: ______________________

DIRECTIONS: Write or print your name legibly on this exam and on your Scantron form. When you are finished, turn in both the exam and your Scantron form. Good luck!!

Section 1 - Multiple Choice (50 points). Select the best correct answer for each question. Circle the answer on your exam and fill in the appropriate box on your Scantron form.

  1. The primary function of flowers is A. protection B. produce sugars C. water transport D. photosynthesis E. reproduction
  2. The cellular organelles in which photosynthesis occurs are the A. synergids B. chlorophylls C. leaves D. chloroplasts E. mesophylls
  3. Pollination refers to A. the development of pollen grains from microsporocytes. B. the fertilization of an egg with a pollen grain. C. the placement of pollen on an insect visiting a flower. D. the transfer of pollen from stamen to a stigma of a flower E. the transfer of pollen from pistils to the stamen of a flower
  4. A fruit consists mostly of cells/tissues derived from A. an ovary B. a leaf C. an embryo D. a stamen E. endosperm
  5. Suppose a plant had a point mutation in the gene encoding the enzyme RUBISCO, such that it catalytic activity was reduced by 90%. What would be the consequence to the plant? A. Its leaves would lack chlorophyll D. It would produce less glucose. B. Its flowers would be imperfect E. Its stomata would not open. C. It would have fewer chloroplasts in its mesophyll
  6. The process by which plants acquire soil-bound mineral nutrients is called A. Chemiosmosis B. Cation exchange C. Photosynthesis D. Transpiration E. Pressure-flow
  7. The mechanism by which sugar is transported from a source to a sink involves A. Changes in osmotic potential B. Changes in pressure potential C. Chemiosmosis D. All of these E. Both A and B.
  8. The term monoecious refers to A. plants that produce a single terminal flower at the end of each stem. B. only one type of flower per plant – either male flowers or female flowers, but not both. C. plants that flower only once in a lifetime. D. plants that self-pollinate. E. plants possesing separate male and female flowers (on the same plant).
  9. Suppose that a plant incurs a mutation which prevents it from producing synergids. What would be the most likely consequence? A. The plant would not produce flowers B. The plant would produce flowers, but they would be self-incompatible. C. The plant would not be able to engage in cation exchange. D. The frequency of fertilization would be reduced. E. It would wilt, due to excessive transpiration.
  10. The flower diagram for short answer question #1 depicts a plant with _____ flowers. (Note that some parts of the flower have been partially cut away in order to see inside the flower) A. perfect, complete B. perfect, incomplete C. imperfect, complete D. imperfect, incomplete E. imperfect, indeterminate
  1. The flower diagram for short answer question #1 depicts a plant that is classified as a ____ plant. (Note that some parts of the flower have been partially cut away in order to see inside the flower) A. dioecious B. monocot C. dicot D. monoecious E. self-incompatible
  2. The driving force or mechanism by which water is transported throughout a plant is A. Transpiration B. cation exchange C. phloem loading D. chemiosmosis E. photorespiration
  3. The movement of hydrogen ions across the thylakoid membrane A. Is the process used to displace mineral nutrient cations bound to clay particles in the soil. B. is part of the process utilized for chemiosmosis during the light dependent reactions. C. is called cation exchange. D. changes the water potential in guard cells, allowing them to open or close. E. Both A and C.
  4. Which of the following statements is true concerning a plant which is able to produce pistillate flowers but no staminate flowers. A. Its flowers contain a gynoecium, but no androecium B. It cannot self-pollinate. C. It does not produce microspores. D. All of these (A, B, and C) are true E. None of these (A, B, or C) are true.
  5. The term “double fertilization” in flowering plants refers to a. both the process of pollination, and fertilization of the egg by a sperm. b. a flower that has been visited by two different pollinators. c. the fact that ovaries of plants contain two eggs, each of which is fertilized by a pollen grain. d. an egg fertilized by two sperm e. one sperm fusing with an egg, and one sperm fusing with the polar nuclei.
  6. Dry fruits that do not split open at maturity are called a. fleshy fruits b. multiple fruits c. aggregate fruits d. dehiscent fruits e. indehiscent fruits
  7. In flowering plants, pollen is produced by the a. ovary b. stamen c. pistil d. stigma e. pollen tube
  8. Potassium, magnesium and nickel a. Are all macronutrients b. Are obtained from the atmosphere by gas exchange through the stomata c. Are available to plants via cation exchange. d. All of these (A, B and C) e. Both A and C.
  9. Which of the following is true concerning photosynthesis? A. All types of photosynthetic plants (C 3 , C 4 and CAM) utilize the Calvin cycle. B. Photosynthesis involves the breakdown of glucose in the presence of oxygen to produce cellular energy in the form of ATP C. In hot conditions, C4 and CAM plants switch from photosynthesis to photorespiration to make energy. D. All of these are true concerning photosynthesis. E. None of these are true concerning photosynthesis.
  10. Which of the following is involved in the process of the stomatal closing? A. Chemiosmosis. B. An increase in the pressure potential of guard cells. C. Photorespiration. D. A loss of K+ ions from guard cells to surrounding cells. E. Both B and D.

Section 2 - Short Answer (50 points). This section contains 5 questions worth a total of 50 points. PRINT OR WRITE LEGIBLY. If I can’t read your answer, you won’t receive credit for it.

  1. Label the designated structures of this flower diagram. (9 points)

A. ________________________

B. ________________________

C. ________________________

D. ________________________

E. ________________________

F. ________________________

G. ________________________

H. ________________________

I. _________________________

  1. Explain, in terms of the components of cellular water potential, how stomata open. (6 points)

A B D E F H I J

C

D

Peduncle

  1. Identify by letter(s), the structures of this woody stem cross section which match the description given. (10 points). Letters may be used for more than one description.

phelloderm

D

E

A

C

B

G

I

O

J

N

M

L

P

F

H

K

____ ___ Meristematic tissue

______ Functions in gas exchange

______ Xylem ray

______ Transports sugars

____ ___ Cell types which indicate this is a hardwood specimen and not a softwood

______ Cork

______ Produces secondary xylem

______ Produces secondary phloem

  1. Fill in the blanks shown in this diagram of a life cycle of a typical flowering plant (alternation of generations). Boxes A, D, G, H, K, and M are ‘events’ or ‘actions’ that take place in the life cycle ( most of which are types of cell division). Boxes B, C, E, F, I, J and L are names of structures or parts of a plant. Identify the ploidy (number of chromosome sets) of the mature sporophyte and mature gametophytes (in the boxes provided). The dashed line represents the transition points between the sporophyte and gametophyte generations. (15 points)

MATURE SPOROPHYTE

MATURE MALE

GAMETOPHYTE

MATURE FEMALE GAMETOPHYTE

A

B C

E F

H G

I

J

K D

L

M