ZOO301 Part 1

Q1. The number of metabolic processes are interwoven by

1. Incoordination
2. Subordination
3. Coordination
4. All A, B and C

Q2. A cell or group of cells specialized to detect changes in the environment and trigger impulses are known as

1. Effectors
2. Receptors
3. Suppressors
4. B and C

Q3. The term Auxin was coined by

1. T-Yabuta 1970
2. F.W.Went 1926
3. Walter 1928
4. Hoshimata 1910

Q4. You duck your head when a baseball is thrown toward your face. You are responding to

1. An internal stimulus
2. Pigments
3. Hormones
4. An external stimulus

Q5. A plant's response to touch is called

1. Photoperiodism
2. Geotropism
3. Thigmotropism
4. Phototropism

Q6. The biological clock is an independent, ________________, time measuring system.

1. Endogenous
2. Exogenous
3. Both A and B
4. None of these

Q7. If bio-rhythm occurs with a frequency of 24 hours, it is called

1. Circadian rhythm
2. Circa-annual rhythm
3. Lunar rhythm
4. All of the choices are correct

Q8. Photosynthesis and Luminescence in algae and Dinoflagelltes, CO2 metabolism in Bryophylum are

1. Dependent on light and Temperature
2. Exogenous in origin
3. Independent of light and temperature
4. All of the choices are correct

Q9. The influence of daily cycle of light and darkness on the physiology and behaviour of an organism is known as

1. Mechanical rhythm
2. Chemoperiodism
3. Photoperiodism
4. Thigmotropism

Q10. The synthesis and release of abscisic acid in a plant is response to

1. Water deficit
2. Oxygen deprivation
3. Salt stress
4. Herbivory

Q11. Circadian rhythms are based on approximately a

1. 2-hour period
2. 7-day period
3. 24-hour period
4. 365-day period

Q12. The production of fructants by plants is response to

1. Water deficit
2. Salt stress
3. Cold stress
4. Heat stress

Q13. The formation of air tubes in submerged roots is an adaptation to

1. Water stress
2. Oxygen deprivation
3. Salt stress
4. Herbivory

Q14. Which of the following describes a plant's response to heat stress?

1. Production of heat shock proteins
2. Closing of stomata
3. Production of Abscisic acid
4. Production of fructants

Q15. The first line of defense against pathogen is

1. Gene for gene-recognition
2. Production of oligosaccharides
3. Production of Phytoalexins
4. Physical barrier of epidermis

Q16. Auxin causes

1. Promotion of apical dominance
2. Formation of Adventitious roots
3. Growth of fruit
4. All of the choices are correct

Q17. _________________ in combination with Auxin stimulates cell division in plants and determines the course of differentiation.

1. Ethylene
2. Gibberellins
3. Abscisic acid
4. Cytokinin

Q18. "Foolish seedling" disease in rice is caused by

1. Ethylene
2. Gibberellins
3. Abscisic acid
4. Cytokinin

Q19. One of the most important uses of Auxin is the

1. Initiation of abscission
2. Stimulation of abscission
3. Prevention of abscission
4. Acceleration of abscission

Q20. Abscisic acid

1. Induces bud dormancy
2. Causes the stomata to close
3. Promotes senescence
4. All of the choices are correct

Q21. Which of the following is weedicide hormone?

1. Auxin
2. Gibberellin
3. Abscisic acid
4. Ethylene

Q22. Gibberellic acid was discovered by

1. Hoshimata and Rappaport
2. Donoho and Walker
3. Yabuta and Hayashi
4. Litrochet ad Dolk

Q23. Plants may be made to grow taller by applying the chemical

1. Dichlorophenoxy acetic acid
2. Trichloropenoxy acetic acid
3. Gibberellic acid
4. Phosphon

Q24. IAA, NAA, and GA are

1. International seed companies
2. Plant Pheromones
3. spray adjuvants
4. Plant hormones

Q25.

1. Triggers ripening of fruit
2. Promotes leaf abscission
3. Initiates flowering
4. All of the choices are correct

Q26. The hormone responsible for delay of senescence is

1. Ethene
2. Gibberellin
3. Abscisic acid
4. Cytokinin

Q27. The naturally occurring Cytokinin is

1. Zeatin
2. Kinetin
3. Nepthalene acetic acid
4. Indole butyric acid

Q28.

1. Stimulate flowering
2. Promote bud sprouting
3. Stimulate growth of Pollen tube
4. All A, B and C

Q29. Abscisic acid

1. Is growth inhibitor
2. Produced during adverse conditions
3. Induces seed dormancy
4. All of the choices are correct