Question
(1) Identify A, B and C.
(2) What are their sizes?

(2) What are their sizes?


(1) A : Circular, unfolded chromosome
b : Folded chromosome (40 to 50 loops)
c : Supercoiled, folded chromosome
(2) (A) 350 µ (B) 30 µ (C) 2 µ
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| Instrument / Technique | Purpose of use |
| Sphygmomanometer | ——————— |
| —————- | X-ray imaging of the cardiac blood vessels to locate the position of blockages. |
| ————— | To measure ECG. |
| Partial pressure of gases | Alveolar air | Pulmonary, capillaries |
| $PPO_2$ | ————— | ————— |
| $PPCO_2$ | —————- | —————- |

| Vehicle | Norms | Cities of Implementation |
| —————- | Bharat Stage II | ——————- |
| 4 wheelers | Bharat Stage III | —————— |
| 4 wheelers | ————— | 13 mega cities (Delhi and NCR, Mumbai, Kolkata, Chennai, Bengaluru, Surat, Kanpur, Agra, Lucknow, Solapur) since April 2010. |
| 2 wheelers | Bharat Stage III | ——————– |
| ————— | Bharat Stage III | Throughout the country since October 2010 |

| Column A (Biocontrol agents) | Column B (Host) |
| Microbial pesticide | ———— |
| Mycoherbicide | ———— |
| Insect as herbicide | ————– |
| Bacterial herbicide | ————— |