bio 200

CONFIDENTIAL AS/APR 2011/BIO200

UNIVERSITI TEKNOLOGI MARA FINAL EXAMINATION

COURSE

COURSE CODE

EXAMINATION

TIME

INTRODUCTION TO TISSUES, CLASSIFICATION OF LIVING THINGS AND ECOLOGY

BIO200

APRIL 2011

3 HOURS

INSTRUCTIONS TO CANDIDATES

1. This question paper consists of two (2) parts: PART A (20 Questions)

PART B (7 Questions)

2. Answer ALL questions from all two (2) parts:

i) Answer PART A in the Objective Answer Sheet. ii) Answer PART B in the Answer Booklet. Start each answer on a new page.

3. Do not bring any material into the examination room unless permission is given by the invigilator

4. Please check to make sure that this examination pack consists of:

i) the Question Paper ii) an Objective Answer Sheet - provided by the Faculty iii) an Answer Booklet - provided by the Faculty

DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO

This examination paper consists of 7 printed pages © Hak Cipta Universiti Teknologi MARA CONFIDENTIAL

CONFIDENTIAL 2 AS/APR 2011/BIO200

PART A

1. The type of fiber that gives connective tissue great tensile strength is

A. elastic fiber. B. collagen fiber. C. reticular fiber. D. muscle fiber.

2. The functions of cartilage include

A. fat and mineral storage. B. production of blood cell. C. resistance against compressive stress. D. wrap and cushion organs.

3. The tissue that provides strength and support for areas subjected to stresses from many directions is

A. areolar tissue. B. adipose tissue. C. dense connective tissue. D. loose connective tissue.

4. Which of the following cell type is least likely to have a secondary wall?

A. Sclereid B. Parenchyma cell C. Fiber cell D. Tracheid

5. If a mutant plant was produced in a research laboratory that had a cuticle covering the epidermis of the root and none covering the stem,

A. the plant would quickly lose water from the stem, unable to absorb water and die.

B. water absorption would only occur through the stomata of the root epidermis, but otherwise the plant is normal.

C. water loss through the stem would occur only if the stomata were open, and the plant would survive if it were kept in the dark.

D. the plants would grow the same as normal plants.

© Hak Cipta Universiti Teknologi MARA CONFIDENTIAL


6. Plants A and B are classified as members of the same species. Plants C and D are classified in the same genus as A and B, but not the same species as A and B. Choose the best statement based on the information given above.

A. Plant A has many common characteristics with plant B. B. Plants A and B belong to a different kingdom from plants C and D. C. Plant C cannot be the same species as plant D. D. Plants A, B, C, and D all belong to different phyla.

7. A scientist recently discovered a pond organism that is unicellular, which contains chloroplasts and other membrane-bound organelles, and possesses a flagellum. In which kingdom is this organism classified?

A. Monera B. Fungi C. Protista D. Plant

8. Scientists classify organisms because

A. it helps identify relationships between organisms. B. it simplifies the naming process. C. it is logical to group similar organisms. D. all of the above.

9. All of the organisms from several species inhabiting an area make up a (an) in that area.

A. ecosystem B. community C. population D. biome

10. The factors that cause an increase in mortality with increasing population size (density) are known as

A. K-factors. B. density-independent factors. C. abiotic factors. D. density-dependent factors.



11. For two competing species (denoted 1 and 2), the population growth rate of species 1 in the presence of species 2 is

A. lower at all population sizes. B. zero when the population reaches K. C. dependent on the carrying capacity of species 2. D. the same as in the absence of species 2.

12. Interference competition is more costly than exploitation competition

A. because there is an added risk of injury due to contact. B. because interference competition is stronger. C. because exploitative competition results in low resource availability. D. none of the above.

13. Although three different bird species all inhabit the same type of tree in an area, competition between the birds rarely occurs. The most likely explanation for this lack of competition is that these birds

A. are unable to interbreed. B. have a limited supply of food. C. share food with each other. D. have different ecological niches.

14. The two most important factors determining the distribution of life in an aquatic habitat are

A. temperature and precipitation. B. pH and temperature. C. light and nutrient availability. D. surface area and nutrient availability.

15. Which processes below are involved in the water cycle?

A. Respiration and photosynthesis only. B. Transpiration and excretion only. C. Photosynthesis, evaporation, and condensation only. D. Percolation, photosynthesis, transpiration, excretion, evaporation, and

condensation.



16. In grasslands, soil nutrients are generally highest

A. in the surface layers, because of input by litter. B. in the intermediate layers, because of immobilization. C. in deeper layers, because leaching moves nutrients down through the soil. D. none of the above.

17. Which marine zone would have the lowest rates of primary productivity?

A. Pelagic B. Coral reef C. Abyssal D. Intertidal

18. Biological magnification is

A. the increase in size of organisms at higher trophic levels. B. the increase in number of organisms at higher trophic levels. C. the increase in concentration of stable, non-excretable chemicals in

organisms at higher tophic levels. D. the concentration of nitrates and phosphates in a polluted lake.

19. Ozone is

A. a mineral found in the soil that is known to cause cancer. B. a gas layer that shields the earth from ultraviolet radiation. C. a heavy metal found in polluted water that causes death due to biological

magnification. D. the reason eutrophication of lakes and ponds is a matter of serious

environmental concern.

20. Which is not an expected effect of global warming?

A. Melting of polar ice caps. B. Flooding of coastal areas. C. Increased crop yields. D. Alteration of rainfall patterns.



PARTB

QUESTION 1

a) Explain the differences between simple epithelial tissues and stratified epithelial tissues. Include examples in your explanation.

(6 marks)

b) Muscle tissues can be divided into three types. Explain the function and location for each of these muscle tissues.

(6 marks)

QUESTION 2

a) Describe the cell types of dermal tissue system of plants. (6 marks)

b) Explain the structure and function of the vascular tissue system of plants. (5 marks)

QUESTION 3

a) In a laboratory, you are given four different types of organisms: squid, human, lizard and chimpanzee. Three distinct characteristics to be analyzed are the backbone, the mammary glands, and the upright posture. Build a data table based on the four types of organisms by stating whether the characteristics are present or absent.

(4 marks)

b) Based on the data table, construct a cladogram and explain your answer. (8 marks)

QUESTION 4

a) A female bison bears a single offspring every 1 to 3 years. Based on this information, which survivorship curve represents this animal? Explain your answer.

(4 marks)

b) List five factors that affect natality rates and mortality rates. (5 marks)



QUESTION 5

Explain the concept below and include one specific example for each.

a) Competitive exclusion (Gause's principle) (3 marks)

b) Realized niche (3 marks)

c) Intraspecific competition (3 marks)

QUESTION 6

a) Suppose Net Primary productivity (NPP) is 1500 kJ m"2 yr"1. Ecological efficiencies are 10% for the second trophic level, 20% for the third trophic level, and 10% for the fourth trophic level. Draw and label a pyramid of energy and by using appropriate units, indicate the productivity at each level.

(4 marks)

b) Biomes can be divided into nine types. Identify and explain two biomes that are best suited for agricultural land.

• (4 marks)

QUESTION 7

a) Name three (3) types of greenhouse gases. (3 marks)

b) Describe three of the significant problems that global warming may cause during the 21st century.

(6 marks)

END OF QUESTION PAPER


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