A person showing upredictable moods, outbursts of emotion, quarrelsome behaviour and conflicts with others is suffering from:
1. schizophrenia
2. borderline personality disorder (BPD)
3. mood disorders
4. addictive disorders
Sulphur is an important nutrient for optimum growth and productivity in:
1. pulse crops
2. cereals
3. fibre crops
4. oilseed crops
Pentamerous, actinomorphic flowers, bicarpillary ovary with oblique septa, and fruit a capsule or berry, are characteristic features of:
1. Asteraceae
2. Brassicaceae
3. Solanaceae
4. Liliaceae
In a moss the sporophyte:
| 1. | is partially parasitic on the gametophyte |
| 2. | produces gametes that give rise to the gametophyte |
| 3. | arises from a spore produced from the gametophyte |
| 4. | manufactures food for itself, as well as for the gametophyte |
Curing of tea leaves is brought by the activity of:
1. bacteria
2. mycorrhiza
3. viruses
4. fungi
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People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 meters have around 8 million. This is because at high altitudes:
| 1. | people get pollution-free air to breathe and more oxygen is available |
| 2. | atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive |
| 3. | there is more UV radiation which enhances RBC production |
| 4. | people eat more nutritive food, therefore more RBCs are formed |
An important evidence in favour of organic evolution is the occurrence of:
1. homologous and vestigial organs
2. analogous and vestigial organs
3. homologous organ only
4. analogous organ only
Which one of the following is not a living fossil?
1. King crab
2. Sphenodon
3. Archaeopteryx
4. Peripatus
Annual migration does not occur in the case of:
1. Salmons
2. Siberian crane
3. Salamander
4. Arctic tern
A major breakthrough in the studies of cells came with the development of an electron microscope. This is because:
| 1. | the resolution power of the electron microscope is much higher than that of the light microscope. |
| 2. | the resolving power of the electron microscope is 200-350 nm compared to 0.1-0.2 nm for the light microscope. |
| 3. | electron beam can pass through thick materials, whereas light microscopy requires thin sections. |
| 4. | the electron microscope is more powerful than the light microscope as it uses a beam of electrons that has a wavelength much longer than that of photons. |
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