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Life Sciences Comprehensive Exam

A comprehensive biology quiz covering hormones and their actions, photosynthesis, microbiology, metabolism and bioenergetics, plant pathology, economic botany, botany, and morphogenesis & development

17 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following hormones is/are secreted by adrenal cortex?

  1. Adrenaline
  2. Aldosterone
  3. Cortisol
  4. Norepinephrine
  1. 1 and 2
  2. 1 and 3
  3. 1 and 4
  4. 2 and 3
  5. 3 and 4
Question 2 Multiple Choice (Single Answer)

Which of the following are examples of C4 plants?

  1. Crassula ovata
  2. Zea mays
  3. Saccharum officinarum
  4. Hordeum vulgare
  5. Oryza sativa
  1. 1 and 2
  2. 1 and 5
  3. 2 and 3
  4. 2 and 4
  5. 3 and 5
Question 3 Multiple Choice (Single Answer)

Which of the following hormones are secreted by the pineal gland?

  1. Melatonin
  2. Glucagon
  3. Cholecystokinin
  4. Oxytocin
  5. Insulin
Question 4 Multiple Choice (Single Answer)

Which of the following hormones are secreted by pars distalis region of adenohypophysis of pituitary gland?

  1. ACTH
  2. MSH
  3. LH
  4. TSH
  1. 1 and 2
  2. 1, 2 and 3
  3. 1, 3 and 4
  4. 2, 3 and 4
  5. All of the above
Question 5 Multiple Choice (Single Answer)

Chemiosmotic hypothesis of ATP synthesis in light reaction was given by ____________________.

  1. Emerson and Arnold
  2. Peter Mitchell
  3. Theodore Engelmann
  4. Arnon
  5. Hill and Bendal
Question 6 Multiple Choice (Single Answer)

Which one of the following antibiotics is obtained from Streptomyces antibioticus?

  1. Actinomycin
  2. Tetramycin
  3. Leucomycin
  4. Chloramphenicol
  5. Lincomycin
Question 7 Multiple Choice (Single Answer)

Which of the following is a green manure crop?

  1. Cinchona
  2. Foeniculum
  3. Tectona
  4. Crotalaria
  5. Aconitum
Question 8 Multiple Choice (Single Answer)

Tryptophan acts as metabolic precursor of:

  1. epinephrine
  2. norepinephrine
  3. serotonin
  4. melatonin
  1. 1 and 2
  2. 1 and 3
  3. 1 and 4
  4. 2 and 3
  5. 3 and 4
Question 9 Multiple Choice (Single Answer)

Match the entries in column - I and column - II and select the correct answer.

 
Column - I 
        </strong>|<strong>Column - II</strong>|

|P. Serotonin|1. 4,5-β-trihydroxy-N-methylphenethylamine|
|Q. Epinephrine|2. 5-hydroxytryptamine|
|R. Melatonin|3. 3,4-dihydroxyphenethylamine|
|S. Dopamine|4. N-acetyl-5-methoxytryptamine|

  1. P - 1, Q - 2, R - 3, S - 4
  2. P - 2, Q - 1, R - 4, S - 3
  3. P - 3, Q - 4, R - 1, S - 2
  4. P - 3, Q - 2, R - 1, S - 4
  5. P - 4, Q - 3, R - 2, S - 1
Question 10 Multiple Choice (Single Answer)

Which of the following statements are false?

  1. In C4 plants, CO2 fixation occurs twice.
  2. Kranz type leaf anatomy is found in C3 plants.
  3. Bundel sheath is not found in C3 plants.
  4. C4 plants occur in all types of climates.
  1. 1 and 2
  2. 1 and 4
  3. 2 and 3
  4. 2 and 4
  5. 3 and 4
Question 11 Multiple Choice (Single Answer)

Which of the following are modifications of stem?

  1. Potato
  2. Sweet potato
  3. Carrot
  4. Ginger
  1. 1 and 2
  2. 1 and 4
  3. 2 and 3
  4. 2 and 4
  5. 3 and 4
Question 12 Multiple Choice (Single Answer)

Match the entries in List - I and List - II and select the correct answer.

 
List - I 
        </strong>|<strong>List - II</strong>|

|P. PTH|1. Blood pressure lowering hormone|
|Q. ANF|2. Antidiuretic hormone|
|R. FSH|3. Hypercalcemic hormone|
|S. Vasopressin|4. Gonadotropic hormone|

  1. P - 1, Q - 2, R - 4, S - 3
  2. P - 2, Q - 3, R - 1, S - 4
  3. P - 2, Q - 1, R - 4, S - 3
  4. P - 3, Q - 2, R - 4, S - 1
  5. P - 3, Q - 1, R - 4, S - 2
Question 13 Multiple Choice (Single Answer)

__________ is flat-topped inflorescence with the oldest flowers at the end of the main axis.

  1. Raceme
  2. Umbel
  3. Corymb
  4. Cyme
  5. Spike
Question 14 Multiple Choice (Single Answer)

Which of the following are diploid structures?

  1. Nucellus
  2. Integuments
  3. Endosperm
  4. Megasporocyte
  5. Megaspore
  1. 1, 2 and 4
  2. 1, 3 and 5
  3. 2, 3 and 4
  4. 2, 4 and 5
  5. 3, 4 and 5
Question 15 Multiple Choice (Single Answer)

Molecular formula of chlorophyll a is _____________________.

  1. C35H30O5N4Mg
  2. C55H70O6N4Mg
  3. C55H71O6N4Mg
  4. C54H70O6N4Mg
  5. C55H72O5N4Mg
Question 16 Multiple Choice (Single Answer)

Match the column – I (disease) with column – II (causative agent) and select the correct option.

 
Column – I 
        </strong>|<strong>Column &#x2013; II</strong>|

|A. Hollow stalk disease of tobacco|1. Pseudomonas syringae|
|B. Wildfire of tobacco|2. Erwinia carotovora|
|C. Granville wilt of tobacco|3. Ralstonia solanacearum|
|D. Leafy gall disease of tobacco|4. Rhodococcus fascians|

  1. A - 4, B - 3, C - 2, D - 1
  2. A - 2, B - 1, C - 4, D - 3
  3. A - 2, B - 1, C - 3, D - 4
  4. A - 3, B - 2, C - 4, D - 1
  5. A - 1, B - 2, C - 3, D - 4
Question 17 Multiple Choice (Single Answer)

Match the entries in column - I and column - II and select the correct answer.

 
Column - I 
        </strong>|<strong>Column - II</strong>|

|P. Totipotency|1. Ability of a single cell to divide and produce all of the differentiated cells in an organism|
|Q. Apogamy|2. Formation of sporophyte directly from gametophyte without gamete formation|
|R. Allogamy|3. Cross pollination|
|S. Apomixis|4. Formation of new individuals directly through asexual reproduction without involving the formation and fusion of gametes.|

  1. P - 1, Q - 2, R - 3, S - 4
  2. P - 2, Q - 1, R - 4, S - 3
  3. P - 1, Q - 3, R - 2, S - 4
  4. P - 2, Q - 3, R - 1, S - 4
  5. P - 3, Q - 2, R - 4, S - 1
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