Ecology and Environment

Brood parasitism, where one bird lays eggs in the nest of another, is most commonly seen between:

Polar seals have a thick layer of fat underneath their skin that acts as an insulator; this layer is called:

Which of the following environmental factors is considered the most ecologically relevant?

In the population growth equations, what does the parameter '$r$' denote?

In the rocky intertidal communities of the American Pacific Coast, the removal of the predator starfish $Pisaster$ led to the extinction of more than 10 species of invertebrates. According to the ecological process illustrated below, what was the primary reason for this loss of biodiversity?

Organisms vary in their ability to tolerate environmental temperature fluctuations. Based on the classification shown in the diagram, which term correctly describes organisms that are capable of thriving in a wide range of temperatures (Category X)?

Deep-sea hydrothermal vent ecosystems are unique because their primary source of energy is:

Which specific term is used to describe the relationship where one organism (the parasite) lives on or inside another (the host) and derives nutrition at the host's expense?

In the demographic transition of a human population, which phase is characterized by a rapid decline in death rates while birth rates remain high?

What is the biological term for the phenomenon where an organism's body temperature changes with the ambient temperature?

Which of the following is a sedimentary nutrient cycle?

Which of the following is the correct sequence of processes in decomposition?

Ecological pyramids were first developed by which of the following ecologists?

Which plant stage in hydrarch succession is characterized by plants like Typha and Sagittaria?

Which of the following is true about the pyramid of biomass in a grassland ecosystem?

Primary productivity depends on several factors. Which of the following is a factor that does NOT directly affect primary productivity?

If a forest is cut down and the area is left undisturbed, the type of succession that will occur is:

The 'Law of Thermodynamics' that states energy cannot be created or destroyed, but only transformed, is most relevant to which ecosystem process?

Which of the following factors does NOT typically influence the 'Climax' community during succession?

Which stage of the Hydrarch succession is characterized by the presence of plants like 'Scirpus' and 'Phragmites'?

The diversity of ecosystems like deserts, rainforests, mangroves, and coral reefs in India is a measure of:

Which of the following is an example of an invasive aquatic weed that has caused havoc in Indian wetlands, often called 'Terror of Bengal'?

Which of the following is a bird species from Russia that recently became extinct?

Which historical convention on biological diversity was held in Rio de Janeiro?

In the context of global species diversity, invertebrates are the most species-rich group of animals. Based on the flowchart provided, which taxonomic group is represented by the label 'X', which alone accounts for more than $70\%$ of the total number of animal species identified so far?

According to the species-area relationship, what is the value of 'Z' for frugivorous birds and mammals in the tropical forests of different continents?

The concept of 'Sacred Groves' reflects:

In the study of biodiversity, the term 'Endemism' refers specifically to:

The Western Ghats have a greater amphibian species diversity than the Eastern Ghats. This is an example of:

Identify the pattern of biodiversity where species richness generally decreases as we move away from the equator towards the poles.

The Environment (Protection) Act of India was enacted in which year?

Which of the following contributes about $14\%$ to the total global warming?

In the context of the environment, what does the term 'Reforestation' refer to?

The unit used to measure the intensity of sound is:

In an electrostatic precipitator, electrode wires are maintained at several thousand volts to produce a corona that releases electrons. Based on the process illustrated in the flowchart, what is the primary role of these electrons in cleaning industrial exhaust?

In organic farming, the use of which of the following is strictly avoided?

Which of the following is a primary reason for the loss of biodiversity due to deforestation?

Acid rain causes significant ecological damage not only through direct contact with foliage but also by profoundly altering soil chemistry. Based on the mechanism of cation exchange, which of the following describes a major detrimental effect of low soil pH on terrestrial ecosystems?

The process of 'Reforestation' can occur naturally in a deforested area, but it can be sped up by:

Which heavy metal is associated with 'Minamata disease', caused by the consumption of contaminated fish?