Arrange the following steps of DNA fingerprinting in a correct sequence.
Choose the correct answer from the options given below:
1. A, B, D, C, E
2. A, E, B, C, D
3. A, D, B, E, C
4. A, E, B, C, D
| A. | Isolation of DNA and its digestion by restriction endonucleases. |
| B. | Hybridisation using a labelled VNTR probe. |
| C. | Transferring of separated DNA fragments by synthetic membranes. |
| D. | Detection of hybridised DNA fragments by autoradiography. |
| E. | Separation of DNA fragments by electrophoresis. |
Choose the correct answer from the options given below:
1. A, B, D, C, E
2. A, E, B, C, D
3. A, D, B, E, C
4. A, E, B, C, D
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Find the incorrect statement(s) about photosynthesis from the following :
Choose the answer from the options given below :
1. B and C only
2. B only
3. A and D only
4. B and E only
| A. | The water splitting complex is associated with PS I. |
| B. | \(C_4\) plants use the \(C_3\) pathway of \(CO_2\) fixation as the main biosynthetic pathway. |
| C. | In \(C_4\) plants, photorespiration does not occur. |
| D. | \(C_3\) plants exhibit ‘Kranz’ anatomy. |
| E. | ATP synthesis in chloroplast occurs through chemiosmosis. |
Choose the answer from the options given below :
1. B and C only
2. B only
3. A and D only
4. B and E only
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Arrange the following steps of somatic hybridisation in a correct sequence.
Choose the correct answer from the options given below:
1. E, A, B, C, D
2. D, B, A, E, C
3. E, B, A, D, C
4. D, A, B, C, E
| A. | Digestion of cell walls. |
| B. | Isolation of naked protoplasts. |
| C. | Fusion of protoplasts to get hybrid protoplast. |
| D. | Isolation of single cells from two different varieties of plants. |
| E. | Growing of hybrid protoplast to form a new plant. |
Choose the correct answer from the options given below:
1. E, A, B, C, D
2. D, B, A, E, C
3. E, B, A, D, C
4. D, A, B, C, E
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The main function of bulliform cells in grasses is :
| 1. | to make the leaf impermeable to fungal spores. |
| 2. | to perform photosynthesis. |
| 3. | to minimize water loss during water stress. |
| 4. | to transport water. |
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Arrange the following in the correct developmental sequence related to microsporogenesis :
Choose the correct answer from the options given below :
1. D, A, C, B
2. B, D, C, A
3. A, D, C, B
4. B, D, A, C
| A. | Microspore tetrads |
| B. | Sporogenous tissue |
| C. | Pollen grains |
| D. | Pollen mother cells |
Choose the correct answer from the options given below :
1. D, A, C, B
2. B, D, C, A
3. A, D, C, B
4. B, D, A, C
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Which of the following is an in situ conservation method?
1. Seed Banks
2. Wildlife Safari Parks
3. Botanical Gardens
4. Sacred Groves
1. Seed Banks
2. Wildlife Safari Parks
3. Botanical Gardens
4. Sacred Groves
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Which one of the following is a triploid cell ?
1. Zygote
2. Central cell
3. Primary endosperm cell
4. Synergid
1. Zygote
2. Central cell
3. Primary endosperm cell
4. Synergid
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Since the origin and diversification of life on Earth, there have been five episodes of mass extinction of species. How is the sixth extinction, which is in progress, different from the previous episodes?
| 1. | The current species extinction rates are far lower than those in previous episodes. |
| 2. | The current species extinction rate is nearly 10 times faster than that in previous episodes. |
| 3. | The present net species extinction rate is zero. |
| 4. | The present species extinction rates are 100 to 1000 times faster than in the pre-human times. |
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In the lac operon, the z gene codes for:
| 1. | permease | 2. | the repressor of lac operon |
| 3. | transacetylase | 4. | beta-galactosidase |
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In racemose inflorescence, ______________
1. flowers are borne in an acropetal succession
2. flowers are solitary
3. the growth is limited
4. the main axis terminates in a flower
1. flowers are borne in an acropetal succession
2. flowers are solitary
3. the growth is limited
4. the main axis terminates in a flower
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