Select the correct sequence of events occurring during prophase-I of meiosis-I
| (a) | Nuclear envelope breakdown |
| (b) | Synaptonemal complex formation |
| (c) | Compaction of chromosomes |
| (d) | Terminalisation of chiasmata |
| (e) | Crossing over |
Choose the most appropriate answer from the options given below:
| 1. | (c) → (b) → (e) → (d) → (a) |
| 2. | (c) → (a) → (b) → (d) → (e) |
| 3. | (b) → (c) → (a) → (d) → (e) |
| 4. | (c) → (a) → (b) → (e) → (d) |
Inadequate supply of oxygen to heart muscles leads to a symptom of acute chest pain. This disorder of the circulatory system is identified as:
| 1. | Angina pectoris | 2. | Cardiac arrest |
| 3. | Heart failure | 4. | Coronary Heart Disease |
Given below are two statements:
| Statements I: | Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature |
| Statements II: | Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in nature |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Which one of the following is not an Assisted Reproductive Technology (ART) used by childless couples to have children?
| 1. | ZIFT | 2. | IUD |
| 3. | IVF | 4. | IUT |
Immuno-suppressants are administered to burn-patients or during organ transplantation to suppress:
| 1. | Innate immunity | 2. | Cytokine storm |
| 3. | Humoral immunity | 4. | Cell-mediated immunity |
Ear wax secreting cells have which type of epithelium?
1. Columnar epithelium
2. Exocrine glandular epithelium
3. Compound epithelium
4. Endocrine glandular epithelium
Arrange the following male sex accessory ducts in the correct sequence for the transport of sperms from the tests
| (a) Epididymis | (b) Ejaculatory duct |
| (c) Vasa efferentia | |
| (d) Rete testis | (e) Vas deferens |
Choose the most appropriate answer from the options given below:
| 1. | (d) , (a) , (c) , (e) , (b) | 2. | (d) , (c) , (e) , (a) , (b) |
| 3. | (d) , (c) , (a) , (e) , (b) | 4. | (d) , (e) , (a) , (c) , (b) |
Chylomicrons are:
1. fat coated protein globules
2. micro-sized lipid molecules
3. protein coated fat globules
4. spherical aggregates of fatty acids
Normal sleep-wake cycle in a human body is maintained by the secretion of:
| 1. | Thyroid gland | 2. | Thymus gland |
| 3. | Pineal gland | 4. | Pituitary gland |
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 |
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