1. | Coiling and condensation chromatids |
2. | Spindle fibres attach to Kinetochores of chromosomes |
3. | Movement of centrioles towards opposite poles |
4. | Pairing of homologous chromosomes |
1. | It is necessitated by nature to maintain the ecological balance |
2. | It helps in maintaining species diversity in a community |
3. | It might lead to the extinction of a species |
4. | Both the interacting species are negatively impacted |
1. | Maize | 2. | Cotton |
3. | Coriander | 4. | Buttercup |
a. Mustard | b. Gulmohar | c. Cassia |
d. Datura | e. Chilly |
1. | c, d, e only | 2. | a, b, c only |
3. | b, c only | 4. | d, e only |
1. | Reduction of NADP to NADPH2 on the stroma side of the membrane |
2. | Breakdown of proton gradient |
3. | Breakdown of electron gradient |
4. | Movement of protons across the membrane to the stroma |
Assertion (A): | Polymerase chain reaction is used in DNA amplification. |
Reason (R): | The ampicillin resistant gene is used as a selectable marker to check transformation. |
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. |
1. | Natality | 2. | Population explosion |
3. | Competition | 4. | Biodiversity loss |
Statement I : | \(CO_2\) acceptor in \(C_4\) plants is phosphoenolpyruvate and is found in the mesophyll cells | The primary
Statement II : | \(C_4\) plants lack RuBisCo enzyme. | Mesophyll cells in
1. | Statement I is incorrect but Statement II is correct |
2. | Both Statement I and Statement II are correct |
3. | Both Statement I and Statement II are incorrect |
4. | Statement I is correct but Statement II is incorrect |
1. | Moths and butterflies are the most dominant pollinating agents among insects |
2. | Pollination by water is quite rare in flowering plants |
3. | Pollination by wind is more common amongst abiotic pollination |
4. | Flowers produce foul odours to attract flies and beetles to get pollinated |