28 Questions
What is Ecology?
Ecology is the study of the interactions between living organisms and their biotic and abiotic environments.
Define the environment.
The environment is defined as 'the sum total of living, non-living components; influences and events, surrounding an organism.'
Define Population in ecology.
A population is a group of organisms usually of the same species, occupying a defined area during a specific time.
Explain the concept of an Organism in ecology.
An organism is an individual living being that has the ability to act or function independently.
Explain the study of Ecology in relation to the environment.
Ecology studies the relationship of plants and animals with their physical and biological surroundings.
What is the correct sequence of a food chain?
a) Diatoms-Crustaceans-Herrings
What does Community refer to in ecology?
Community refers to all the populations of different species living and interacting in a particular area or habitat.
Which statement(s) about food chains in ecosystems is/are correct?
c) 1, 2 and 3
Which kind of organism is/are known as decomposer organism/organisms?
b) 2 and 3 only
Which of the following are detritivores?
c) 1, 3 and 5 only
What are the two broad groups that consumers can be divided into?
Micro and macro consumers
Give an example of a primary consumer and mention its food source.
Cow; mainly feeds on plants
What type of consumers feed on primary consumers?
Secondary consumers
What do carnivores feed on?
Secondary consumers
Give an example of an omnivore and mention its diet.
Man; consumes both plants and animals
What do scavengers feed on?
Dead and decaying organisms
What is the purpose of ecological pyramids?
To show the relative abundance or biomass of different groups of organisms at each trophic level in an ecosystem, and the flow of energy and nutrients through the food chain.
Who proposed the Law of 10% and what does it state?
The Law of 10% was proposed by Raymond Lindeman. It states that only about 10% of the energy entering one trophic level is available to the next trophic level due to energy losses.
Why do food chains typically have five or fewer links?
Food chains usually have five or fewer links due to the 10% energy transfer efficiency between trophic levels, resulting in significant energy loss.
What is the main reason for the rapid decrease in energy available in ecological pyramids?
The main reason for the rapid decrease in energy available in ecological pyramids is the loss of energy in the form of heat and other processes like movement.
What is the relationship between energy losses and the amount of energy available in trophic levels?
Energy losses contribute to a decrease in the amount of energy available at each trophic level due to inefficiencies in energy transfer and utilization.
How does the Law of 10% explain the limited efficiency of energy transfer in ecosystems?
The Law of 10% explains the limited efficiency by highlighting that only a small fraction of the energy obtained by organisms is converted to biomass, leading to significant energy losses.
What are the primary producers in the food chains of oceans among the following organisms: Copepods, Cyanobacteria, Diatoms, and Foraminifera?
Cyanobacteria and Diatoms
Which of the following types of organisms can establish symbiotic relationships with other organisms: Cnidarians, Fungi, and Protozoa?
Cnidarians and Fungi
According to the term 'ecosystem', how is it best described?
A community of organisms together with the environment in which they live
Who first used the term 'Ecosystem' and how did he define it?
A G Tansley in 1935; 'a particular category of physical systems, consisting of organisms and inorganic components in a relatively stable equilibrium, open and of various sizes and kinds'
What is the role of primary producers in the food chain of oceans?
Initiating the food chain by converting sunlight into energy through photosynthesis
How do symbiotic relationships benefit the organisms involved?
By providing mutual support, resources, or protection to each other
Test your knowledge on the basics of Environment and Ecology with this quiz based on the class plan by Dr. Shivin Chaudhary. Explore concepts such as the definition of environment, the components, influences, and events surrounding an organism, and the study of interactions in ecology.
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