BSc Biotechnology Sem II 2021 2022 2022 BT LIFE SCIENCES I PHYSIOLOGY AND ECOLOGY Question Paper - Mumbai University | munotes

Questions asked in this paper

• 1. Attempt all questions

1. Q1 Select the appropriate option for the following questions. 40 marks
   • 1. The accepts electrons from cytochrome b6f complex and donates
   • 2. is helpful in eradication of weeds. (Gibberellins, Auxin, Cytokinin, ABA)
   • 3. is acommon air pollutant and is also a powerful plant hormone. (Ethylene,
   • 4. A major amount of incident light about 10 percent is . (Reflected,
   • 6. The production of ATP in the membrane of the thylakoids is known as is a Hills reagent. (Phosphate, Oxalic acid, Potassium oxalate,
   • 8. Breathing is also called . (Pulmonary ventilation, pulmonary contraction,
   • 9. Oxygenated blood passes from the left atrium into the left ventricle guarded by a valve which is called a valve. (Sinus valve, bicuspid valve, pulmonary
   • 10. is the blood vessel which supplies blood to the kidney. (Renal tubules, renal normal, quiet breathing, the primary muscle involved in inspiration is the , a dome shaped muscle that separates the thoracic cavity from the
   • 12. Which of the following prevents entry into the windpipe? (Trachea, larynx, epiglottis,
   • 15. natural pacemaker of the heart. (sinus node, left node, parietal node, natural Class: FYBT SUB:LIFE SCIENCES I: PHYSIOLOGY AND ECOLOGY
   • 14. In an ecosystem, energy flows in a non-cyclic manner (unidirectional). Set the order of flow of energy from . (sun to carnivores to herbivores to producers, Sun to producers to herbivores to carnivores, sun to herbivores, carnivores to sun)
   • 15. The are producers or transducers which convert or transduce radiant energy into chemical form. (Herbivore, carnivores, green plants, top predator)
   • 16. The pattern of eating and being eaten forms a linear chain called . (Food chain, 17%. is an ecosystem which is man-engineered and maintained artificially by man
   • 18. Mutually beneficial relationships between species are called as . (Mutualism,
   • 19. Living organisms, atmosphere and earth maintain between them a circulation of water and moisture, which is referred to as Cycle. (Carbon, Water, Air, Nitrogen)
   • 20. Degradation of nitrate is called . (Denitrification, Nitrification, nitrogen fixation,
2. Q2 A. Write a note on non-cyclic photophosphorylation. 7 marks
3. Q2 B. What is Hill’s reaction? Write significance of Hill's reaction. 4 marks
4. Q2 C. Give an account of C4 cycle. 7 marks
5. Q2 D. Write a note on ethylene. 4 marks
6. Q3 A. Describe the structure of a human heart with a neat labeled diagram. 7 marks
7. Q3 B. write a note on Hemoglobin. 4 marks
8. Q3 C. Give a brief account on respiratory tract in humans with labeled diagrams. 7 marks
9. Q3 D. Give a brief account on glomerular filtration. 4 marks
10. Q4 A. Elaborate on non-living and living components of an ecosystem. 7 marks
11. Q4 B. Write in brief about oxygen cycle. 4 marks
12. Q4 C. Describe in detail about parasitism with suitable examples 7 marks
13. Q4 D. Describe the water cycle in detail. 4 marks
14. Q5 Do as directed (Any Two) 2 marks
    • a. Correct and rewrite the statement: Ethylene is also known as’ anti-gibberellin’
    • c. Explain the term ‘commensalism’
    • d. Define: Ecosystem

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