| 1. | cross target cell membrane and influence gene activity |
| 2. | cause vasoconstriction |
| 3. | be secreted by postganglionic sympathetic neurons |
| 4. | increase blood glucose levels |
| I: | Glomerulus is a tuft of capillaries formed by the efferent arteriole |
| II: | Afferent arteriole forms the peritubular capillary network |
| III: | Vasa recta is absent or highly reduced in juxtamedullary nephrons |
| 1. | Only III is correct |
| 2. | I is correct but II and III are incorrect |
| 3. | I, II and III are incorrect |
| 4. | I and II are correct |
| I: | is lined by cuboidal brush bordered epithelium |
| II: | reabsorbs 70-80 percent of electrolytes and water |
| 1. | Proximal convoluted tubule |
| 2. | Loop of Henle |
| 3. | Distal convoluted tubule |
| 4. | Collecting duct |
| 1. | about 25 – 30 mg of urea is excreted out per day |
| 2. | 125 ml per minute urine is produced |
| 3. | about 200 L carbon dioxide is removed by the lungs per minute |
| 4. | 1100-1200 ml of blood is filtered by the kidneys per minute |
| 1. | Pavo | 2. | Ornithorhynchus |
| 3. | Salamandra | 4. | Hippocampus |
Which one of the following hormones reduces blood pressure?
1. Antidiuretic hormone
2. Atrial Natriuretic factor
3. Aldosterone
4. Angiotensin-II
Terrestrial adaptations necessitated the production of :
| 1. | Highly toxic nitrogenous wastes like urea and uric acid |
| 2. | Lesser toxic nitrogenous wastes like urea and uric acid |
| 3. | Lesser toxic nitrogenous wastes like ammonia and urea |
| 4. | Highly toxic nitrogenous wastes like ammonia and urea |
| Column I [Organism] |
Column II [Osmoregulatory and excretory structure] |
||
| A | Flatworms, rotifers, Amphioxus | P | Protonephridia |
| B | Earthworm | Q | Nephridia |
| C | Insects | R | Malpighian tubule |
| D | Prawn | S | Green gland or antennal gland |
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | R | S | P |
| 3. | R | S | P | Q |
| 4. | S | P | Q | R |