| 1. | Separated DNA fragments can be directly seen under UV radiation |
| 2. | Separated DNA can be extracted from gel piece. |
| 3. | Fragments of DNA move toward anode. |
| 4. | Sieving effect of agarose gel helps in separation of DNA fragments. |
| 1. | B and E only | 2. | C, D and E only |
| 3. | A, B and D only | 4. | A and C only |
| Statement I: | In the lac operon, the z gene codes beta-galactosidase which is primary responsible for the hydrolysis of lactose into galactose and glucose. |
| Statement II: | In addition of lactose, glucose or galactose can also induce lac operon. |
| 1. | Endosperm | 2. | Thalamus |
| 3. | Endocarp | 4. | Mesocarp |
| Statement I: | In a dicotyledonous leaf, the adaxial epidermis general bears more stomata than the abaxial epidermis. |
| Statement II: | In a dicotyledonous leaf, the adaxially placed palisade parenchyma is made up of elongated cells, which are arranged vertically and parallel to each other. |
| A. | Glutamic acid | B. | Arachidonic acid |
| C. | Palmitic acid | D. | Lecithin |
| E. | Aspartic acid | ||
| 1. | C, D and E only | 2. | A and B only |
| 3. | A, D and E only | 4. | B and C only |

| 1. | \(\dfrac{ 1000 }{10}~\text J\) | 2. | \(\dfrac{ 1000}{10} \times 4~\text J \) |
| 3. | \(10,000~\text J\) | 4. | \(10,00,000~\text J \) |
| 1. | ADP | 2. | NADPH |
| 3. | \(O_2\) | 4. | ATP |
| 1. | Hind II, Hind II | 2. | Hind II, Alu I |
| 3. | Hind II, EcoR I | 4. | Hind II, Bam HI |
| 1. | Saprophytes are not given any place in ecological pyramids |
| 2. | It assumes a simple food chain that, almost, never exists in nature |
| 3. | It accommodates a food web |
| 4. | It does not take into account the same species belonging to two or more trophic levels |