Multiple Choice Questions (MCQs)
________ pyramids are usually, but not always, upright.
Files and ________ have outlandish proboscises.
________ was Father of geology and stratigraphy.
It has two phases.
Which of the following bacteria fix atmospheric nitrogen in anaerobic conditions?
In ________ at either limit, one or more essential functions cease.
One of the major disruptions is loss of habitat in ________.
Bacteria use ________ in conjugation for exchange of genetic material.
________ is the amount of chemical energy as biomass that primary producers create in a given length of time.
Third Atmosphere is the constant rearrangement of ________.
Removal of apex predator in environment called ________.
Which of the following bacteria have tuft of flagella at one end?
In pyramid of ________ one trophic level has greater biomass than the one below it.
Variability in Net Primary Productivity of Wetlands and tropical rain forests is ________.
Thermoacidophiles live in superheated water with temperature ________.
Which of the following order is correct?
According to first law of thermodynamics ________ is neither created nor destroyed in the biosphere.
Kingdom Protista consists of ________.
Conditions in the reproductive ________ of a female may not support the sperm of male.
Which of the following proteins are useful for looking at relationships among more closely related animals?
In crypsis animals habitually press their bodies to the ________.
Existence of shared ancestry between a pair of structures, or genes, in different taxa occur in ________.
According to ________ model of evolution "species do not change significantly over millions of years".
Volcanic eruptions release ________ into the atmosphere.
This speciation occurs within a single population.
Atmosphere is ________ nitrogen by volume.
In ________ growth a stationary or stable phase is achieved.
Who proposed the law of use and disuse?
In transpiration plants absorb ________ from the soil.
________ competition occurs between two species to use the same resources.
The ________ is key element in survival of life.
Stratosphere is ________ major layer of Earth's atmosphere.
Which of the following limiting factor cannot regulate population at constant level?
________ is an early freshwater reptile, found as fossils from the Early Permian Period.
New genetic material is generated during ________ evolution.
Land fill is the example of ________.
Food chain only follows a direct, ________ pathway of one animal at a time.
Orientation towards a factor called ________.
They can breakdown carbohydrate anaerobically also.
Parapatric speciation occurs in small, local populations, called ________.
Cynaobacteria is the example of ________.
In ________ isolation, courtship behaviour patterns of two animals are inappropriate for each other.
The theory of ________ states that evolution occurs primarily through short bursts of intense speciation, followed by lengthy periods of stasis.
Different colors of Mullerian Mimicry depend on ________ and visibility.
Photosynthesizing bacteria that are related to the chloroplasts of eukaryotic plants and algae are called ________.
Number of Pilli in a bacterial cell is ________.
Thermosphere Known as ________
The ________ is a energy intensive process.
In Nitrogen cycle Immobilization is the opposite of ________.
In interspecific interactions counter-illumination eliminates ________.
In homeostasis ________ is a critical factor.
In Mesosphere lower boundary is ________ to 65 kilometres.
Members of the domain archaea, don't have ________ in their cell wall.
Layers of atmosphere increases with ________ in some regions.
Transparency in interspecific interactions showed by ________.
Weismann made the important distinction between ________ cells and ________ cells.
K-selected species are typically ________ competitors in such crowded habitats.
Second atmosphere formed carbonates that were deposited as ________.
In ________ legs have been modified for swimming.
Wings have been modified for soaring in ________.
Approximately ________ tons of sodium chloride is extracted from the Great Salt Lake.
Who is the father of taxonomy and systematics?
Population size ________ above carrying capacity.
They release digestive enzymes by their hyphae
________ brings all the toxic chemicals in air back into surface runoff.
It occurs when uptake from the water is greater than excretion.
According to Endosymbiotic Theory, ________ evolved from endocytosis of aerobic bacteria.
If reproductive isolation is due to reproducing at different times, it is ________.
Animals undergo ________ in extended period of drying.
It represent tiny portion of the complexity of real ecosystems.
Which of the following is NOT the external factor of Ecosystem?
________ are strongly affected by light pollution.
Short protein appendages smaller than flagella is called ________.
Mercury bioaccumulates in the ________ of top predators of the open ocean.
According to the ________ concept, Evolutionary changes are occuring gradually over millions of years.
________ occurs in small, local populations, called demes which are not completely isolated from each other.
Adult human body contains ________ of water by weight.
The atmosphere provides protective shield against radiation and ________.
Natural environment where a species/organism lives is called ________.
They obtain energy by means of inorganic oxidation reactions
There is limited number of feeding or trophic levels in ________.
________ enables animals to survive periods of reduced food availability.
There are ________ types of herbivory depending upon different feeding habits.
In aquatic ecosystem, ________ reacts with the water to form bicarbonate ions.
Which of the following has low algal growth?
Gregor Mendel proposed the laws of genetics in ________.
Proteolysis releases nitrogen and ________.
Which of the following diseases is caused by sewage water?
In which of the following organism logistic growth occurs.
________ consists of distinct biological communities.
Which of the following are also called blue green algae?
Thermoacidophiles live in the environment with ________ pH.
A specific functional role and place of an organism called its ________.
The salt concentration in oceans is roughly ________.
Which of the following bacteria have a single flagellum at both ends?
Cascade effect leads to increase in ________ species.
In aposematism advertisement of signals includes ________.
The rate that new organic matter is made by means of individual growth and reproduction in all the herbivores is ________.
Loss of ________ percent energy occurs from one level to next.
Each successional stage is called a ________ stage.
________ speciation occurs within a single population.
In ________ wings have been modified for hovering.
It occurs in large animals.
Legs have been modified for perching in ________.
Likely sea level rise during the 21st century is ________.
Which microparasites reproduce inside host ________.
Cell wall of bacteria consists of ________.
________ transfer heat from one place to another by mass motion of a fluid such as water, air or molten rock.
Animals use ________ to make organic molecules.
Each ________ trophic level has its own secondary productivity.
Evolution of 14 species of finches from the original seed eater finches from mainland is the example of ________ speciation.
Which of the following is not the characteristic of Eutrophic lake?
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