| Assertion (A): | Plant and animal kingdoms have been constant under all different classification systems. |
| Reason (R): | The understanding of what groups/organisms are included under these kingdoms have been changing over the time. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
| I: | All bacteria are autotrophic. |
| II: | Bacteria can only survive on dead organic matter. |
| III: | All bacterial cells are surrounded by a thick peptidoglycan cell wall. |
The members of Kingdom Monera and Kingdom Protista in Whittaker’s five kingdom classification resemble each other in:
| 1. | Cell type | 2. | Body organization |
| 3. | Nature of cell wall | 4. | Nuclear membrane |
| A: | Methanogens are archaebacteria. |
| B: | Blue green algae are unicellular algae. |
| C: | Mycoplasma are true bacteria. |
| I: | Bacteria reproduce sexually |
| II: | Transformation of a bacterial cell is sexual reproduction |
| Assertion(A): | Archaebacteria can survive in extreme harsh habitats. |
| Reason(R): | Archaebacterial cell wall has peptidoglycan that helps them survive in harsh habitats. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
| (i) | It was given by George Bentham and Joseph Dalton Hooker |
| (ii) | It was based on natural affinities among the organisms |
| (iii) | It takes into account not only the external features but also internal features |
| (iv) | Internal features like ultrastructure, anatomy, embryology and phytochemistry are also considered |
| (v) | Evolution is also taken into account |
| 1. | Two | 2. | Four |
| 3. | Three | 4. | Five |
The diagram shows the presence of a pathogen amongst RBCs in the peripheral blood smear of a patient. Even though the shape is very easy to identify, the structure highlighted in the circle should enable you to identify the pathogen easily. It is:
| 1. | Trypanosoma | 2. | Plasmodium |
| 3. | Schistosoma | 4. | Clonorchis |
| (a) | Are chief producers in the ocean |
| (b) | Have silica impregnated cell membrane |
| (c) | Are called flagellated golden protists |
| (d) | Lack chlorophyll a |