Endemism refers to:
| 1. | Species richness | 2. | Species evenness |
| 3. | Species confined to that region | 4. | Species diversity |
In a cell, the separation of DNA strands is brought about by the enzyme DNA helicase, whereas in PCR, the separation of DNA strands is due to :
| 1. | High temperature | 2. | Two sets of Primers |
| 3. | Taq DNA polymerase | 4. | Deoxynucleotides |
A low frequency recombination indicates that the genes are:
1. Located far apart from each other
2. Located close to each other
3. Not linked
4. Present on different chromosomes
A population with finite resources shows a logistic growth curve where the correct sequence of events will be:
| 1. | Stationary phase → Acceleration phase → Lag phase → Asymptote |
| 2. | Acceleration phase → Deceleration → Asymptote |
| 3. | Acceleration phase → Leg phase → Stationary phase |
| 4. | Lag phase → Acceleration phase → Deceleration → Asymptote |
Which of the following hormones are secreted in women only during pregnancy?
| (a) Relaxin | (b) Oxytocin | (c) hCG |
| (d) hPL | (e) Progesterone | |
Choose the most appropriate answer from the options given below:
| 1. | (c) , (d) and (e) only | 2. | (b) and (e) only |
| 3. | (b) , (c) and (d) only | 4. | (a) , (c) and (d) only |
In the regulation of respiration, a chemosensitive area adjacent to the rhythm centre in the medulla region of the brain, is highly sensitive to:
| 1. | \(HCO^-_3\) | 2. | \(CO_2\) |
| 3. | \(O_2\) | 4. | \(N_2\) |
Herbarium, Botanical gardens, Museum, Zoological parks and Key are considered as:
| 1. | Trophic aids | 2. | Environmental aids |
| 3. | Pollution aids | 4. | Taxonomical aids |
The oocytes of some vertebrates get arrested for years or months in:
| 1. | Telophase - I | 2. | Diplotene |
| 3. | Diakinesis | 4. | Metaphase - I |
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