NCERT Class 11 MCQ Quiz Hub

MCQ Questions for Class 11 Biology sets 2

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1. In a monocot leaf




2. A.T.S. of a young dicot root can be distinguished from that of a young dicot stem by the presence of




3. Fusifrom initial cells of cambium from




4. Callose deposition is found in




5. Stem develops from




6. Stem grows in girth due to




7. Which of the following is true about heartwood?




8. Pith is very well developed in




9. Which of the following helps in the curling of the leaf surface?




10. Walls of sclerenchyma are




11. After the secondary growth, the oldest layer of secondary phloem in a dicot stem is located




12. The innermost layer of cortex which shows casparian thickenings in its cells is called as




13. Vessels differ from tracheids




14. Endodermis cells are rich in




15. Blood corpuscles are formed in the




16. Which of the following is absent in female frog?




17. Osteoblasts are found in




18. Choose the incorrect statement.




19. Which one of the four parts mentioned below is not part of a single uriniferous tubule ?




20. The vascular tissue of blood is made up of




21. Which membrane protects the eyes of frog in water?




22. Fats are richly found in




23. The main function of the skin of frog is




24. The ciliated epithelium in our body may be found in




25. Which one of the following is a scent gland of mammals?




26. The characteristic of simple eqithelium is that




27. Spot the salivary gland in the following :




28. Protein not found in the connective tissues is




29. Tendons connect the following:




30. Frogs are beneficial to us because




31. Which of the following helps in locomotion of earthworms?




32. Which is not a part of reproductive system of female cockroach?




33. The cytoplasmic connections from cell to cell are known as




34. Bacterial flagella is made up of




35. Plasmolysis occurs due to-




36. The term Cell was given by-




37. Which one of the following also acts as a catalyst in a bacterial cell?




38. Centrosome is found in-




39. Middle lamella is made up of ___________.




40. Match the columns. 1. Cytoskeleton – A. hair-like outgrowth 2. Flagella – B. proximal region of centriole 3. Hub – C. bristle-like structures 4. Fimbriae – D. filamentous protein structure




41. Which of the following does not have cell wall?




42. The longest cell in human body is




43. The main site for synthesis of lipids is




44. The function of ribosomes is




45. Which is called Suicidal Bag?




46. A nucleosome is a portion of the chromonema containing ______.




47. The largest cell in the human body is-




48. Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?




49. Cell secretion is done by-




50. ___________ increases the surface area for mitochondrial activity.




51. Feedback inhibition of enzymes is affected by which of the following




52. An example of competitive inhibition of an enzyme is the inhibition of




53. Insulin is made up of _______ and _______.




54. Enzymes increase the rate of reaction by




55. Which of the following statements regarding enzyme inhibition is correct?




56. Which of the following is not a pyrimidine?




57. Hydrolysis of starch occurs with the help of




58. Assertion: Arachidic acid is an unsaturated fatty acid. Reason: There are one or more double bonds between carbon atoms in unsaturated fatty acids.




59. Which of the following influence feedback inhibition of enzyme?




60. Which of the following is not a polysaccharide?




61. Inulin is made up of _______ and _______.




62. A protein having both structural and enzymatic traits is




63. NADP contains vitamin ______.




64. With reference to enzymes, which one of the following statements is true?




65. Inhibitor binds to the active site of the enzyme. Hence blocking the reaction. This is an example of




66. The fastest enzyme known is




67. Lecithin is a




68. The minimum amount of energy required to initiate a chemical reaction is called




69. Enzymes, vitamins and hormones are common in




70. Golgi complex and endoplasmic reticulum cannot be seen during




71. Cell plate grows from




72. Choose the correct sequence. A. Chromatin condensation B. Protein synthesis C. Duplication of centrioles D. Centrioles moves towards opposite poles




73. If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you most conveniently look into:




74. Karyokinesis is the term used for




75. During which stage the chromosomes first become visible.




76. In mitosis, nuclear envelope and nucleolus disappear during




77. Arrange the following events of meiosis in the correct sequence: I. Terminalization II. Crossing over III. Synapsis IV. Disjunction of genomes The correct sequences:




78. The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes, is




79. What type of plant is formed when colchicine is used in the process of development of Raphanobrassica?