| Statement I: | Restriction endonucleases recognise specific sequence to cut DNA known as palindromic nucleotide sequence. |
| Statement II: | Restriction endonucleases cut the DNA strand a little away from the centre of the Palindromic site. |
| I: | Fungi: Saprotrophs |
| II: | Lichens: Mutualism |
| III: | Malarial parasite in human RBC-commensal |
| 1. | Muscular dystrophy | An auto immune disorder causing progressive degeneration of skeletal muscle |
| 2. | Arthritis | Inflamed joints |
| 3. | Tetany | high Ca2+ level causing rapid spasms. |
| 4. | Myasthenia gravis | Genetic disorder resulting in weakening and paralysis of skeletal muscle |
| 1. | SER are the sites for lipid synthesis |
| 2. | RER has ribosomes attached to ER |
| 3. | SER is devoid of ribosomes |
| 4. | In prokaryotes, only RER is present |
| Statement I: | The release of sperms into the seminiferous tubules is called spermiation. |
| Statement II: | Spermiogenesis is the process of formation of sperms from spermatogonia. |
Tegmina in cockroach, arises from :
| 1. Prothorax and Mesothorax | 2. Prothorax |
| 3. Mesothorax | 4. Metathorax |
| (a) | It results in the formation of haploid gametes. |
| (b) | Differentiation of gamete occurs after the completion of meiosis. |
| (c) | Meiosis occurs continuously in a mitotically dividing stem cell population. |
| (d) | It is controlled by the Luteinising hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary. |
| (e) | It is initiated at puberty. |
| 1. | (b), (c), and (e) only | 2. | (c) and (e) only |
| 3. | (b) and (c) only | 4. | (b), (d) and (e) only |