Q1. R.Q is ratio of

• A) CO2 produced to substarate consumed
• B) CO2 produced to O2 consumed
• C) oxygen consumed to CO2 produced
• D) oxygen consumed to water produced

Q2. Angiosperm pollen is generally released at the

• A) 1 – celled stage
• B) 2 – celled stage
• C) 3 – celled stage
• D) male gamete formation stage

Q3. The complete oxidation of pyruvate take place in

• A) cell cytoplasm
• B) inner mitochondrial membrane
• C) mitochondrial matrix
• D) nucleus

Q4. Which enzyme catalyses the reaction below? Pyruvic acid → Carbon dioxide + Ethanol

• A) Pyruvic acid decarboxylase
• B) Alcohol dehydrogenase
• C) None of these
• D) Both of these

Q5. TCA cycle was discovered by

• A) Otto Meyerhof
• B) Hans Kreb
• C) Gustav Embden
• D) All of these

Q6. Which one of the following describes the spikelet of a cereal or grass plant

• A) inferior ovary
• B) dehiscent fruit
• C) pair of glumes
• D) fused calyx

Q7. Malacophily means

• A) pollination by wind
• B) pollination by water
• C) pollination by insects
• D) pollination by snails

Q8. Herkogamy is a contrivance for

• A) allogamy
• B) autogamy
• C) chasmogamy
• D) cleistogamy

Q9. Out of 36 ATP molecules produced per glucose molecule during respiration

• A) 2 are produced outside glycolysis and 34 during repiratory chain
• B) 2 are produced outside mitochondria and 34 inside the mitochondria
• C) all the formed inside mitochondria
• D) 2 during glycolysis and 34 during kreds cycle

Q10. Complete the reaction. _________ + O2 → CO2 + _______ + Energy

• A) C6H12O6, 2H2O
• B) C12H22O11, 6H2O
• C) C6H12O6, 6H2O
• D) C12H22O11, 11H2O

Q11. The significant morphological feature of passion flower is the presence of

• A) numerous corolla
• B) androphore
• C) gynophore
• D) androgynophore

Q12. The final electron acceptor in electron transport chain is

• A) Cytochrome C
• B) FADH
• C) NADH
• D) oxygen

Q13. Which of the following acts as mobile carrier for transfer of electrons between complex III and complex IV?

• A) Cytochrome c
• B) cytochrome a3
• C) cytochrome a
• D) FADH2

Q14. Aleurone layer takes part in

• A) protection of delicate embryo
• B) enzyme synthesis
• C) transfer of food to cotyledons
• D) transfer of food from cotyledons to embryo tips

Q15. A characteristic of drupe is

• A) fleshy seed coat
• B) stony pericarp
• C) stony mesocarp
• D) stony endocarp

Q16. Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is know as

• A) TCA pathway
• B) Glycolysis
• C) Hms pathway
• D) Glycolysis

Q17. End product of glycolysis is

• A) acetyl Coenzyme A
• B) PEP
• C) pyruvate
• D) OAA

Q18. Respiratory enzymes are located in

• A) mitochondrial matrix
• B) Cristae
• C) perimitochondrial space
• D) outer membrane

Q19. Respiratory quotient of carbohydrates is

• A) 0.9
• B) 1.2
• C) 1

Q20. One molecule of glucose yields ___ ATP molecules in aerobic respiration.

• A) 2
• B) 16
• C) 38
• D) 42

Q21. When one glucose molecule is completely oxidised, it changes:

• A) 36 ADP molecules into 36 ATP molecules
• B) 38 ADP molecules into 38 ATP molecules
• C) 30 ADP molecules into 30 ATP molecules
• D) 32 ADP molecules into 32 ATP molecules

Q22. Most of the energy of the carbohydrates is released by oxidation when

• A) Pyruvic acid is converted into CO2 and H2O
• B) Pyruvic acid is converted into acetyl Co-A
• C) Sugar is converted into pyruvic acid
• D) Glucose is converted into alcohol and CO2

Q23. Acetyl CoA combine with oxalo-acetate in presence of condensing enzyme citrate synthase to form 6-C compound called

• A) Malic acid
• B) Tartaric acid
• C) Pyruvic acid
• D) Citric acid

Q24. Number of oxygen atoms required for aerobic oxidation of one pyruvate

• A) 10
• B) 8
• C) 5
• D) 12

Q25. Most of the enzymes of the TCA cycle are present in

• A) Intermembrane space of mitochondria
• B) Mitochondrial matrix
• C) Inner membrane of mitochondria
• D) Cytoplasm