1. sn RNA
2. hn RNA
3. 23 S rRNA
4. 5 S rRNA
1. Shortening of jaws
2. Binocular vision
3. Increasing brain capacity
4. Upright posture
1. nucleus
2. ribosomes
3. cell wall
4. plasma membrane
In which one of the following the genus name, its two characters and its class/phylum are correctly matched?
| Genus | Two Characters | Class/phylum |
| (a) Salman dra | (i) A tympanum represents ear (ii) Fertilisation is external |
Amphibia |
| (b) Pteropus | (i) Skin possesses hair (ii) Oviparous |
Mammalia |
| (c) Aurelia | (i) Cnidobles (ii) organ level of Organisation |
Coelenterata |
| (d) Ascaris | (i) Body segmented (ii) Males and Female distinct |
Annelida |
3. (c)
4. (d)
| 1. | Cuttlefish – Mollusca, a class |
| 2. | Humans – Primate, the family |
| 3. | Housefly – Musca, an order |
| 4. | Tiger – Tigris, the species |
1. IAA
2. ethylene
3. gamma radiations
4. infrared radiations
| 1. | mitochondria |
| 2. | endoplasmic reticulum |
| 3. | chloroplasts |
| 4. | cytoskeleton |
1. Convoluted tubules
2. Collecting ducts
3. Loops Henle
4. Peritubular capillaries