Questions
Which of following sets is of threatened Indian wild life species?
- Egrets, Black bear, Bison, Spotted deer
- Himalayan musk deer, Great Indian Bustard, Snow leopard, Kashmir stag, Wild ass
- Himalayan musk deer, Black buck, Indian lion, Rhino, Sambar
- Himalayan musk deer, Black buck, Indian lion, Wild buffalo, Golden cat
Ratio between the energy flow at various points along the food chain, when represented as percentage, is known as
- ecological efficiency
- ecological gradient
- relative ratio of energy flow
- energy flow efficiency
“Parasitic flies are sometime more crucial insect’s enemies than are Hymenoptera. Tachina fly has a wide variety of caterpillar hosts and normally achieve in keeping several of them under total subjugation.” This statement precisely builds association between tachina fly and caterpillars. Keeping in sight the form of mouth parts found in the order diptera, the fly-caterpillar association is build through
- oviposition
- ectoparasitism
- endoparasitism
- predation
Few populations of insects have one generation/year. Few insects depend on annual crops as well. Besides, there is the event called algal bloom. In all such cases, what is the growth curve?
- ‘J’ shaped
- Sigmoid type
- Oscillatory
- Not of any specific shape or pattern
The most striking set of characteristic of the deep sea includes
- high temperature, low pressure and high oxygen level
- low temperature, low pressure and low oxygen level
- high temperature, high pressure and high oxygen level
- low temperature, high pressure and low oxygen level
Which pair is not properly matched?
- Cursorial adaptations - Limb bones elongated
- Fossorial adaptations - Developed shoulder girdle
- Arboreal adaptations - Webbed feet
- Volant adaptations - Fusion of certain bones
Which of following chemicals is not associated with biological magnification?
- Organophosphates
- Chlorinated hydrocarbon
- Polychlorinated biphenyls
- Heavy metal
Ancient world cuckoos and brown-headed cowbird of North America do not make nests of their own. Rather they deposit their eggs in the other birds’ nests. Such type of relationship is termed as
- symbiosis
- mutualism
- commensalism
- social parasitism
Ecological equivalents are taxonomically different organisms, which occupy
- various ecological niches performing various functions in various geographical regions
- the same ecological niches performing various functions in the similar geographical regions
- various ecological niches performing the same functions in similar geographical regions
- the same ecological niches performing various functions in various geographical regions
Which of following options is not right pertaining to the alterations in abiotic environment?
- In the troposphere, photo oxidation of hydrocarbons in the presence of nitrogen oxides, forms ozone.
- Annual alterations in temperature in marine environment are more distinct in temperate fresh water climates, than in other climates.
- At global level, activities of humans contribute 9 times more particulate matter or aerosols in to the atmosphere, than do natural processes.
- Temperature is the sticking factor in creation of aqueous currents and air currents.
Removal of keystone predators from a community will result in
- decrease in primary productivity
- dominance of an alternate predator
- usual decline in species diversity
- increase in prey population densities
DDT spraying in ponds is harmful because it
- increases the pH of water
- reduces the oxygen content in water
- stabilizes CO2 in water
- gets accumulated along the food chain
Nitrates are useful for maximizing production of food. Yet, the extra nitrates we utilize in the fields mixed with drinking water results in
- converting nitrates into nitrites in stomach, which mixes with haemoglobin decreasing oxygen carrying process, which results in methaeglobinaemia
- killing intestinal bacteria
- producing more amino acids in the body
- interfering in enzyme production
Which of following options is true?
- Up to about 15 km above the Earth’s surface, both ozone and chlorofluorocarbons (CFC) are injurious to life.
- Up to 15 km above the Earth’s surface, ozone is favorable to life but CFCs are injurious.
- Beyond about 20 km above the Earth’s surface, presence of ozone is important to life on Earth and CFCs are favorable.
- Beyond about 20 km above the surface of the Earth, ozone is important to life on Earth but CFCs are injurious.
Directions: Zoogeography is a branch of biogeography which is concerned with the geographical distribution (past and present) of animal species. Biogeography is the study of distribution of species and ecosystem in geographical regions and through the geological time. Biological communities and organisms differ in an extremely regular pattern along geographical gradients of elevation, altitude, isolation and habitat region.
Eulittoral zone provides which of the following sets of dominant habitat?
- Abyssal, sandy and rocky
- Benthic, deep sea and estuary
- Rocky, sandy and muddy shores
- Submerged rocks, rocks with loose stones and mud
Directions: Species diversity is the potent number of several species which are represented in the collection of individuals (dataset). The potent number of species defines the number of equally-abundant species required to get the similar mean equivalent species abundance, as which is observed in dataset of interest. Species diversity is composed of 2 components-species richness (species count) and species evenness (measures how equal is the abundance of species).
Which of following may achieve protection and conservation of biodiversity?
- Game sanctuary
- Ecodevelopment
- Biosphere reserve
- National park
Directions: Species diversity is the potent number of several species which are represented in the collection of individuals (dataset). The potent number of species defines the number of equally-abundant species required to get the similar mean equivalent of species abundance, as which is observed in dataset of interest. Species diversity is composed of 2 components-species richness (species count) and species evenness (measures how equal is the abundance of species).
In India, lion-tailed Macaque is observed only in
- Western Ghats
- Bandipur Biosphere Reserve
- Eastern Ghats
- Guindy National Park
Which of the following statements is correct?
- Higher the altitude, higher is the pressure, more the depth, lesser is the pressure.
- Higher the altitude, lesser is the pressure, more the depth, more is the pressure.
- Higher the altitude, lesser is the pressure, more the depth, lesser is the pressure.
- Higher the altitude, lesser is the pressure, lesser the depth, lesser is the pressure.
Directions: Zoogeography is a branch of biogeography which is concerned with the geographical distribution (past and present) of animal species. Biogeography is the study of distribution of species and ecosystem in geographical regions and through the geological time. Biological communities and organisms differ in an extremely regular pattern along geographical gradients of elevation, altitude, isolation and habitat region.
Study the following pairs, and select the correctly matched pair(s).
- B and C
- A, B and C
- A and C
- A and B
Match the Column I (Name of Scientists) with Column II (Concepts/discipline) and choose the right answer.
| Column I (Name of Scientists) | Column II (Concepts/discipline) |
| A. Turesson | 1. Life forms |
| B. Harper | 2. Energy flow in ecosystem |
| C. Lindeman | 3. Population biology |
| D. Raunkiaer | 4. Genecology |
- A - 3, B - 4, C - 1, D - 2
- A - 4, B - 3, C - 1, D - 2
- A - 3, B - 4, C - 2, D - 1
- A - 4, B - 3, C - 2, D - 1