InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Cuscuta is an example ofA. ecotoparasitismB. brood parasitismC. predationD. endoparasitism |
| Answer» Correct Answer - A | |
| 152. |
Fill in the blanks : The number of individuals of a species in a particular area at a specific time is called `……….` while number of individuals of a species present per unit area or volume at a given time is `…………..`. |
| Answer» Correct Answer - Population size , population density | |
| 153. |
Select the incorrect statementA. Organisms living in oceans , lakes and rivers do not face any water related problemsB. Productivity and distribution of plants is dependent on waterC. The levels of thermal tolerance of different species determine to a large extent their geographical distributionD. Foraging , reproductive and migratory activities of some animals are dependent on seasonal variation in light. |
| Answer» Correct Answer - A | |
| 154. |
Which of the following statements is not true for J-shaped growth curve?A. Exponential phase is prolongedB. Population never grows beyond carrying capacityC. Population crash occursD. Population seldom reaches equilibrium |
| Answer» Correct Answer - B | |
| 155. |
A group of individuals living in a particular geographical area at a particular time is calledA. Local populationB. DemeC. CommunityD. Both (1) & (2) |
| Answer» Correct Answer - D | |
| 156. |
Assertion: Temperature, water, light and soil are major abiotic/physico-chemical factors. Reason: Water is most ecologically relevant environment factor.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false. |
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Answer» Correct Answer - C a) Temperature, water, light and soil are major abiotic/physio-chemical factors. b)Temperature is most ecologically relevant environmental factor. |
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| 157. |
July 11 is observed asA. World Population DayB. No Tobacco DayC. World Environmental DayD. World Health Day |
| Answer» Correct Answer - A | |
| 158. |
Hypolimnion isA. lower stratum of waterB. upper stratum of waterC. mid stratum of waterD. None of the above |
| Answer» Correct Answer - A | |
| 159. |
Pneumatophores are characteristic features ofA. HydrillaB. RhizophoraC. TyphaD. None of these |
| Answer» Correct Answer - B | |
| 160. |
Plants developing in dry condition areA. XerophytesB. MesophytesC. LithophytesD. Hydrophytes |
| Answer» Correct Answer - A | |
| 161. |
Velamen tissue in orchids is found inA. MesophytesB. EpiphytesC. HydrophytesD. Xerophytes |
| Answer» Correct Answer - B | |
| 162. |
Soil carried by gravity isA. AlluvialB. ColluvialC. ElluvialD. Glacial |
| Answer» Correct Answer - B | |
| 163. |
The maximum amount of water retained paer unit dry weight of soil afer the stoppage of gravitational flow is calledA. gravitational waterB. field capacityC. water loggingD. Permanent Wilting Percentage (PWP) |
| Answer» Correct Answer - C | |
| 164. |
Tropical forests are denser due toA. Wild animalsB. High temperature and less rainfallC. Low temperature and excess rainfallD. High temperature and high rain |
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Answer» Correct Answer - D Tropical forests are denser due to high temperature and high rain. |
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| 165. |
In a general …a… and …b.. Appear to be more adversely affected by competition than …c…A. a`-`herbivores, b`-`carnivores, c`-`plantsB. b`-`herbivores, c`-`carnivores, a`-`plantsC. c`-`herbivores, a`-`carnivores, b`-`plantsD. c`-`herbivores, b`-`carnivores, a`-`plants |
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Answer» Correct Answer - B In general, platns and herbivores appear to be more adversely affected by competition than carnivores. |
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| 166. |
The following figure shows A. Fig flower is pollinated by mothB. Orchid flower is pollinated by beeC. Yucca flower is pollinated by waspD. Fig flower is pollinated by wasp |
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Answer» Correct Answer - B B |
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| 167. |
When certain exotic species are introduced into a geographical area, they become invasive and start spreading fast because the invalid land does not have its naturalA. CompetitorsB. PredatorsC. ParasitesD. Symbionts |
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Answer» Correct Answer - B When certain exotic species are introduced into a geographical area, they become invasive and start spreading fast because the invaded land does not have its natural predators. |
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| 168. |
The size of the colloid particles is :A. Between 0.00002 and 0.02 mmB. Less than 0.002 mmC. 0.5-1.0 mmD. 0.02-0.2 mm |
| Answer» Correct Answer - B | |
| 169. |
Which of the following soils shows cracks and shrinks most when it dries?A. Porous soilB. Clay soilC. Loam soilD. Sandy soil |
| Answer» Correct Answer - B | |
| 170. |
Alluvial soils are mostly found inA. Northern IndiaB. Eastern IndiaC. Southern IndiaD. Ganges and Yamuna plains |
| Answer» Correct Answer - D | |
| 171. |
Name the two main types of environmental factors . |
| Answer» Correct Answer - Biotic and abiotic . | |
| 172. |
What is the best pH of soil for cultivation?A. 3.4-5.4B. 4.5-5.5C. 5.5-6.5D. 6.5-7.5 |
| Answer» Correct Answer - C | |
| 173. |
Parasite can be explained as an organism which depends on others : (a) for food (b) for shelter (c) for both food and shelter , and (d) for reproduction . |
| Answer» Correct Answer - c | |
| 174. |
Parasite can be explained as an organism which depends on others:-A. for foodB. for shelterC. for both food and shelterD. for reproduction |
| Answer» Correct Answer - c | |
| 175. |
If two species complete for the same resource, they could avoid competition byA. Choosing different times for feedingB. Different foraging patternC. Behavioural difference in their foraging activitiesD. All of the above |
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Answer» Correct Answer - D If two species complete for the same resource, they could avoid, competition by choosing different times for feeding, different foraging pattern and behavioural differences in their foraging activities. |
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| 176. |
Most recent studies point out that species facing competition might evolve mechanisms that promote co-existence rather than exlusion. One such mechanism isA. Resource partitioningB. Competitive releaseC. Interference competitionD. All of the above |
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Answer» Correct Answer - A More recent studies point out that speciees facing competition might evolve mechanism that promote co-existence rather than exclusion. One such mechanism is resource partitioning. |
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| 177. |
The layer of atmosphere that extends between 10 and 60 kilometres is calledA. exosphereB. stratosphereC. mesosphereD. thermosphere |
| Answer» Correct Answer - B | |
| 178. |
Xeric environment is characterised byA. precipitationB. low atmospheric humidityC. extremes of temperatureD. high rate of vapourisation |
| Answer» Correct Answer - B | |
| 179. |
Natality under actual conditions is calledA. Biotic potentialB. Maximum natalityC. Ecological natalityD. Reporductive potential |
| Answer» Correct Answer - C | |
| 180. |
Vital index of population isA. `(B//D)xx100`B. `B-D`C. (D//B)xx100`D. `B+D` |
| Answer» Correct Answer - A | |
| 181. |
An urn shaped population age pyramid representsA. Growing populationB. Static populationC. Declining populationD. Threatened population |
| Answer» Correct Answer - C | |
| 182. |
Viscum isA. Partial root parasiteB. Partial stem parasiteC. Total stem parasiteD. Total root parasite |
| Answer» Correct Answer - B | |
| 183. |
The term "autecology" refers to the study ofA. Plant communityB. Individual organismC. EvironmentD. Soil form |
| Answer» Correct Answer - B | |
| 184. |
Plant species having a wide range of genetical distribution evolve into a local population known as:A. ecotypeB. biomeC. ecosystemD. population |
| Answer» Correct Answer - A | |
| 185. |
Lime is added to the soil which is too:A. sandyB. saltryC. alkalineD. acidic |
| Answer» Correct Answer - D | |
| 186. |
Read the following statements and find out the incorrect statement.A. Microbes/archaebacteria flourish in hot springs and deep sea hydrothermal vents where temperature far exceeds `100^o` C.B. Many fish thrive in Antartic waters where the temperature is always below zero.C. A large variety of marine invertebrates and fish live at great depths in the ocean where the pressure could be gt100 times the normal atmosphere pressure.D. Desert lizard have physiological ability that mammals have to deal with the high temperature of their habitat. |
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Answer» Correct Answer - D Desert lizard lack the physiological ability that mammals have to deal with the high temperature of ther habitat: but manage to keep their body temperature fairly constant by behavioural means. |
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| 187. |
The reason of the altitude sickness isA. The low atmospheric pressure of high altitudesB. The high atmosphere pressure of high altitudesC. The low atmospheric temperature of high altitudesD. Both A and C |
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Answer» Correct Answer - A Alitude sickness is due to low atmospheric pressure of high altitude and body does not get enough oxygen. But gradually person get acclimatised and stop experience altitude sickness. |
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| 188. |
What are the symptoms of altitude sickness?A. NauseaB. FatiqueC. Heart palpitationsD. All of the above |
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Answer» Correct Answer - D Nausea, fatigue and heart palpitation are the symptoms of altitude sickness. |
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| 189. |
Which one of the following is one of the characteristics of a biological community?A. Sex - ratioB. StratrificationC. NatalityD. Morality |
| Answer» Correct Answer - B | |
| 190. |
Weather representsA. short term properties of atmosphereB. seasonal changes in atmosphereC. average variations of atmospheric conditionsD. All of the above |
| Answer» Correct Answer - B | |
| 191. |
A :Shivering is an adaption for low temperature . R: Shivering warms up the body.A. If both Assertion & Reason are true and the reason is the correct explanation of the assertionB. It both Assertion & Reason are true but the reason is not the correct explanation of the assertionC. If Assertion is true statement but Reason is falseD. If both Assertion and Reason are false statements |
| Answer» Correct Answer - A | |
| 192. |
Many fresh water animals can not survive in marine environment. Explain. |
| Answer» It is because their bodies are not adapted to the marine environment . Fresh water animals will lose body water due to hypertonic surrounding environment (in marine water ) making their survival difficult . | |
| 193. |
(i) What is commensalism ? (ii) What is mycorrhiza ? |
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Answer» (i) It is an interaction between two species where one derives benefit and other is not affected . (ii) Mycorrhiza is an association of a soil fungus with the roots of higher plants , e.g., conifers to derive mutual benefits . |
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| 194. |
The association mycorrhiza isA. relationship of algae and fungiB. relationship of fungi and higher plantsC. relationship of algae and higher plantsD. None of the above |
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Answer» Correct Answer - B Mycorrhiza is ahte symbiotic association between fungus and roots of higher plants. The mycorrhizal roots are usually covered with fungal woolly outgrowth. Fungus growth does not cause any harm to the plant. Along with water phosphorus and nitrogen are also absorbed. |
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| 195. |
Define predation . |
| Answer» Predation may be defined as an interspecific interaction between two species one of which is benefitted by capturing , killing and eating the other species . The species which is benefitted is called as predator or enemy and the one which is killed is called as prey . | |
| 196. |
The zone of the ocean that does not receive sunlight isA. abyssal zoneB. photic zoneC. limnetic zoneD. littoral zone |
| Answer» Correct Answer - A | |
| 197. |
Mountain sickness at high altitude is due toA. Excess `CO_(2)` in bloodB. Decrease `CO_(2)` in airC. Decrease partial pressure of oxygen.D. Decrease efficiency of haemoglobin |
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Answer» Correct Answer - C Mountain sickness at high altitude is due to decrease partial pressure of oxygen. |
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| 198. |
At high altitude , RBC of human blood willA. Increase in numberB. Decrease in numberC. Decrease in sizeD. Increase in size |
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Answer» Correct Answer - A At high altitude, RBCs of human blood will increase in number. |
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| 199. |
Abyssal zone in ocean hasA. no sunlight but contains consumers and decomposersB. no sunlight but contains producersC. no sunlight but contains living beingsD. sunlight as well as producers |
| Answer» Correct Answer - A | |
| 200. |
Which of the following is most ecologically relevant factors ?A. PrecipitationB. TemperatureC. SoilD. Wind |
| Answer» Correct Answer - B | |