| I: | The content of nucleolus is continuous with the rest of the nucleoplasm. |
| II: | Nucleolus is the site for active ribosomal RNA synthesis. |
| 1. | I is correct and II is incorrect |
| 2. | Both I and II are correct but II does not explain I |
| 3. | Both I and II are correct and II correctly explains I |
| 4. | Only II is correct |
| I: | Nuclear envelope consists of two parallel membranes with a perinuclear space between them. |
| II: | Nuclear pore is formed by the fusion of two nuclear membranes at points where they interrupt the nuclear envelope. |
| III: | Large and more numerous nucleoli are present in the cells actively carrying out protein synthesis. |
| 1. | Only I | 2. | Only II |
| 3. | Only III | 4. | None |
| 1. | metacentric | 2. | sub-metacentric |
| 3. | acrocentric | 4. | telocentric |
| 1. | it usually contains two cylindrical structures called centrioles |
| 2. | both centrioles in centrosome are parallel to each other |
| 3. | in centrioles, the peripheral fibril is a triplet |
| 4. | the central part of the proximal region of the centriole is a proteinaceous hub |
| 1. | do not possess flagella |
| 2. | possess flagella that are structurally similar to that of the eukaryotic flagella |
| 3. | possess flagella that are structurally different from that of the eukaryotic flagella |
| 4. | possess flagella made of tubulin protein and microtubules |
| I: | shows the diagrammatic representation of the ultra-structure of centriole |
| II: | shows the 9 + 2 arrangement of the axonemal microtubules of cilia/flagella |
| 1. | Lysosome | 2. | Peroxisome |
| 3. | Ribosome | 4. | Mesosome |
| 1. | The number of mitochondria per cell is same in all the cells of human body. |
| 2. | The inner membrane forms a number of infoldings called the cristae towards the matrix. |
| 3. | They divide by binary fission. |
| 4. | They are called as ‘power houses’ of the cell. |
| I: | divides the intracellular space into a luminal compartment and an extra-luminal [cytoplasm] compartment. |
| II: | is called as rough ER if it shows ribosomes attached to its inner surface. |
| I: | mainly consists of calcium carbonate |
| II: | holds or glues the different neighbouring cells together |
| III: | is not traversed by plasmodesmata |
| 1. | Only II is correct |
| 2. | Only I is incorrect |
| 3. | I, II and III are incorrect |
| 4. | Only II and III are correct |