In the lac operon, the z gene codes for:
| 1. | the repressor of lac operon | 2. | transacetylase |
| 3. | permease | 4. | beta-galactosidase |
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Match List I with List II:
Choose the correct answer from the options given below:
1. A-III, B-IV, C-I, D-II
2. A-IV, B-I, C-II, D-III
3. A-I, B-II, C-III, D-IV
4. A-II, B-III, C-IV, D-I
| List I (Phase of cell cycle) |
List II (Activity) |
||
| A. | \(G_1\)phase | I. | Actual cell division occurs |
| B. | S phase | II. | Cell is metabolically active and continuously grows but does not replicate its DNA |
| C. | \(G_2\) phase | III. | Synthesis of DNA occurs and the amount of DNA per cell doubles |
| D. | M phase | IV. | Proteins are synthesized while cell growth continues |
1. A-III, B-IV, C-I, D-II
2. A-IV, B-I, C-II, D-III
3. A-I, B-II, C-III, D-IV
4. A-II, B-III, C-IV, D-I
Level 4: Below 35%
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\(\begin{aligned} & 2\left(\mathrm{C}_{51}^{} \mathrm{H}_{98} \mathrm{O}_6\right)+145 \mathrm{O}_2 \longrightarrow102 \mathrm{CO}_2+98 \mathrm{H}_2 \mathrm{O}+\text { energy } \end{aligned}\)
The Respiratory Quotient (RQ) of a biomolecule used for respiration, as per the above equation, would be:
1. Less than 0.5
2. Between 1.25 and 2
3. 1.0
4. Between 0.5 and 0.95
The Respiratory Quotient (RQ) of a biomolecule used for respiration, as per the above equation, would be:
1. Less than 0.5
2. Between 1.25 and 2
3. 1.0
4. Between 0.5 and 0.95
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Which one of the following is not a characteristic of plant cells in the phase of elongation?
| 1. | New cell wall deposition |
| 2. | Cell enlargement |
| 3. | Large conspicuous nuclei |
| 4. | Increased vacuolation |
Level 4: Below 35%
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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. D, B, A, E, C
2. E, A, B, C, D
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. |
1. D, B, A, E, C
2. E, A, B, C, D
3. E, B, A, D, C
4. D, A, B, C, E
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Hints
Match List I with List II:
Choose the correct answer from the options given below:
1. A-IV, B-III, C-II, D-I
2. A-III, B-IV, C-I, D-II
3. A-IV, B-III, C-I, D-II
4. A-III, B-IV, C-II, D-I
| List I | List II | ||
| A. | Conjunctive tissue | I. | Specialised cells in the vicinity of guard cells |
| B. | Casparian strips | II. | Endodermal cells rich in starch |
| C. | Subsidiary cells | III. | Tissue between xylem and phloem |
| D. | Starch sheath | IV. | Endodermal cells with suberin deposition |
1. A-IV, B-III, C-II, D-I
2. A-III, B-IV, C-I, D-II
3. A-IV, B-III, C-I, D-II
4. A-III, B-IV, C-II, D-I
Level 4: Below 35%
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In angiosperms, root hairs arise from which one of the following regions of the root?
| 1. | The region of elongation |
| 2. | The region of meristematic activity |
| 3. | The region of maturation |
| 4. | The root cap zone |
Level 4: Below 35%
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Which of the following floral formula is t correct floral formula of Solanaceae family?
| 1. | \(\oplus \enspace \text{⚥} \enspace K_{(5)} \enspace C_{(5)} \enspace A_{(5)} \enspace \underline{G}_{(2)} \) |
| 2. | \(\oplus \enspace \text{⚥} \enspace K_{5} \enspace C_{5} \enspace A_5 \enspace \underline{G}_{(2)} \) |
| 3. | \(\oplus \enspace \text{⚥} \enspace K_{(5)} \enspace \overset{\Huge \frown}{C_{(5)} \enspace A_5} \enspace \underline{G}_{(2)} \) |
| 4. | \(\oplus \enspace \text{⚥} \enspace K_{(5)} \enspace \overset{\Huge \frown}{C_{(5)} \enspace A_5} \enspace \underline{G}_{(2)} \) |
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Which one of the following is a triploid cell?
1. Synergid
2. Primary endosperm cell
3.Central cell
4. Zygotea
1. Synergid
2. Primary endosperm cell
3.Central cell
4. Zygotea
Level 4: Below 35%
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Match List I with List II:
Choose the correct answer from the options given below:
1. A-III, B-II, C-I, D-IV
2. A-IV, В-III, С-I, D-II
3. А-І, В-II, C-III, D-IV
4. A-III, B-IV, C-II, D-I
| List I | List II | ||
| A. | Decomposition | I. | Accumulation of dark coloured amorphous colloidal substance |
| B. | Detritus | II. | Release of inorganic nutrients by the activity of microbes in soil |
| C. | Mineralisation | III. | Breaking down of complex organic matter into inorganic substances |
| D. | Humification | IV. | Dead remains of plants and animals including fecal matter |
1. A-III, B-II, C-I, D-IV
2. A-IV, В-III, С-I, D-II
3. А-І, В-II, C-III, D-IV
4. A-III, B-IV, C-II, D-I
Level 4: Below 35%
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