1. | 20 | 2. | 80 |
3. | 60 | 4. | 40 |
List I | List II | ||
A. | Oxidative decarboxylation | I. | Citrate synthase |
B. | Glycolysis | II. | Pyruvate dehydrogenase |
C. | Oxidative phosphorylation | III. | Electron transport system |
D. | Tricarboxylic acid cycle | IV. | EMP pathway |
Options: | A | B | C | D |
1. | II | IV | III | I |
2. | III | IV | II | I |
3. | II | IV | I | III |
4. | III | I | II | IV |
List I (Interaction) |
List II (Species A and B) |
||
A. | Mutualism | I. | +(A), O(B) |
B. | Commensalism | II. | –(A), O(B) |
C. | Amensalism | III. | +(A), –(B) |
D. | Parasitism | IV | +(A), +(B) |
Options: | A | B | C | D |
1. | III | I | IV | II |
2. | IV | II | I | II |
3. | IV | I | II | III |
4. | IV | III | I | II |
Statement I: | Gause's 'Competitive Exclusion Principle' states that two closely related species competing for the same resources cannot co-exist indefinitely and competitively inferior one will be eliminated eventually. |
Statement II: | In general, carnivores are more adversely affected by competition than herbivores. |
A: | Lenticels are the lens-shaped openings permitting the exchange of gases. |
B: | Bark formed early in the season is called hard bark. |
C: | Bark is a technical term that refers to all tissues exterior to vascular cambium. |
D: | Bark refers to periderm and secondary phloem. |
E: | Phellogen is single- layered in thickness. |
1. | B and C only | 2. | B, C and E only |
3. | A and D only | 4. | A, B and D only |
A. | Insertion of recombinant DNA into the host cell. |
B. | Cutting of DNA at specific location by restriction enzyme. |
C. | Isolation of desired DNA fragment. |
D. | Amplification of gene of interest using PCR. |
1. | B, D, A, C | 2. | B, C, D, A |
3. | C, A, B, D | 4. | C, B, D, A |
Assertion (A): | In gymnosperms, the pollen grains are released from the microsporangium and carried by air currents. |
Reason (R): | Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed. |
1. | (A) is False, (R) is True. |
2. | Both (A) and (R) are True and (R) correctly explains (A). |
3. | Both (A) and (R) are True and (R) does not correctly explain (A). |
4. | (A) is True, (R) is False. |
1. | The amount of some toxic substances of industrial wastewater increases in the organisms at successive trophic levels. |
2. | The micro-organisms involved in biodegradation of organic matter in a sewage-polluted water body consume aquatic organisms. |
3. | Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries. |
4. | Water hyacinth grows abundantly in eutrophic water bodies and lead to an imbalance in the ecosystem dynamics of the water body. |
A. | This disorder was first described by Langdon Down (1866). |
B. | Such an individual has overall masculine development. However, the feminine development is also expressed. |
C. | The affected individual is short statured. |
D. | Physical, psychomotor and mental development is retarded. |
E. | Such individuals are sterile. |
1. | A and E only | 2. | A and B only |
3. | C and D only | 4. | B and E only |
Assertion (A): | A flower is defined as a modified shoot wherein the shoot apical meristem changes to floral meristem. |
Reason (R): | Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves. |
1. | (A) is False but (R) is True. |
2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
4. | (A) is True but (R) is False. |