Q. Which of the following is an example of a tertiary consumer? (2023)
A.
Grass
B.
Rabbit
C.
Fox
D.
Eagle
Show solution
Solution
An eagle is an example of a tertiary consumer as it feeds on secondary consumers like foxes.
Correct Answer:
D
— Eagle
Learn More →
Q. Which of the following is an example of a transverse wave? (2023)
A.
Sound wave
B.
Water wave
C.
Light wave
D.
Seismic P-wave
Show solution
Solution
Light waves are electromagnetic waves and are an example of transverse waves, where the oscillations are perpendicular to the direction of wave travel.
Correct Answer:
C
— Light wave
Learn More →
Q. Which of the following is an example of a vestigial structure? (2021)
A.
Human appendix
B.
Whale flippers
C.
Bird wings
D.
Insect wings
Show solution
Solution
The human appendix is considered a vestigial structure, as it has lost its original function over the course of evolution.
Correct Answer:
A
— Human appendix
Learn More →
Q. Which of the following is an example of adaptive radiation? (1970)
A.
The evolution of different species of finches in the Galapagos Islands
B.
The development of antibiotic resistance in bacteria
C.
The color variations in peppered moths
D.
The fossil record of horses
Show solution
Solution
Adaptive radiation refers to the rapid evolution of diversely adapted species from a common ancestor, exemplified by the finches in the Galapagos Islands.
Correct Answer:
A
— The evolution of different species of finches in the Galapagos Islands
Learn More →
Q. Which of the following is an example of an alkane? (2023)
A.
C2H4
B.
C3H8
C.
C4H6
D.
C5H10
Show solution
Solution
Alkanes are saturated hydrocarbons with the general formula CnH2n+2. C3H8 (propane) fits this formula.
Correct Answer:
B
— C3H8
Learn More →
Q. Which of the following is an example of an alkene? (2023)
A.
Ethane
B.
Propene
C.
Butane
D.
Cyclohexane
Show solution
Solution
Propene is an alkene, characterized by a carbon-carbon double bond.
Correct Answer:
B
— Propene
Learn More →
Q. Which of the following is an example of an alkene? (2023) 2023
A.
Ethane
B.
Propene
C.
Butane
D.
Cyclohexane
Show solution
Solution
Propene is an alkene, characterized by a carbon-carbon double bond.
Correct Answer:
B
— Propene
Learn More →
Q. Which of the following is an example of an alkyne?
A.
Ethane
B.
Propene
C.
Butyne
D.
Benzene
Show solution
Solution
Butyne is an alkyne, characterized by a triple bond between carbon atoms.
Correct Answer:
C
— Butyne
Learn More →
Q. Which of the following is an example of an endothermic process? (2021)
A.
Combustion of gasoline
B.
Dissolving ammonium nitrate in water
C.
Respiration
D.
Condensation of steam
Show solution
Solution
Dissolving ammonium nitrate in water absorbs heat, making it an endothermic process.
Correct Answer:
B
— Dissolving ammonium nitrate in water
Learn More →
Q. Which of the following is an example of an insulator? (2019)
A.
Copper
B.
Aluminum
C.
Rubber
D.
Iron
Show solution
Solution
Rubber is an example of an insulator.
Correct Answer:
C
— Rubber
Learn More →
Q. Which of the following is an example of an invasive species? (2023)
A.
Bamboo
B.
Bison
C.
Cane toad
D.
Red fox
Show solution
Solution
The cane toad is an example of an invasive species that disrupts local ecosystems.
Correct Answer:
C
— Cane toad
Learn More →
Q. Which of the following is an example of an oxidation reaction? (2020)
A.
2H2 + O2 → 2H2O
B.
C + O2 → CO2
C.
Fe + CuSO4 → FeSO4 + Cu
D.
Na + Cl2 → NaCl
Show solution
Solution
In the reaction C + O2 → CO2, carbon is oxidized as it loses electrons to form CO2.
Correct Answer:
B
— C + O2 → CO2
Learn More →
Q. Which of the following is an example of artificial selection? (1995)
A.
Pesticide resistance in insects
B.
Dog breeding
C.
Peppered moth color variation
D.
Antibiotic resistance in bacteria
Show solution
Solution
Dog breeding is an example of artificial selection, where humans selectively breed animals for desired traits.
Correct Answer:
B
— Dog breeding
Learn More →
Q. Which of the following is an example of budding? (2023)
A.
Starfish regeneration
B.
Hydra
C.
Bacteria
D.
Moss
Show solution
Solution
Budding is exemplified by Hydra, where a new individual develops from an outgrowth of the parent.
Correct Answer:
B
— Hydra
Learn More →
Q. Which of the following is an example of convergent evolution? (1980)
A.
Darwin's finches
B.
Whales and fish
C.
Horses and zebras
D.
Dogs and wolves
Show solution
Solution
Convergent evolution occurs when unrelated species evolve similar traits, as seen in whales and fish, which both have streamlined bodies for swimming.
Correct Answer:
B
— Whales and fish
Learn More →
Q. Which of the following is an example of divergent evolution?
A.
Wings of bats and birds
B.
Body shape of dolphins and sharks
C.
Darwin's finches
D.
Cacti and succulents
Show solution
Solution
Darwin's finches are an example of divergent evolution, where different species evolved from a common ancestor and adapted to different environments.
Correct Answer:
C
— Darwin's finches
Learn More →
Q. Which of the following is an example of ex-situ conservation? (2023)
A.
National parks
B.
Wildlife reserves
C.
Aquariums
D.
Biosphere reserves
Show solution
Solution
Aquariums are an example of ex-situ conservation as they involve the conservation of species outside their natural habitats.
Correct Answer:
C
— Aquariums
Learn More →
Q. Which of the following is an example of fragmentation? (2023)
A.
Starfish
B.
Bacteria
C.
Fungi
D.
All of the above
Show solution
Solution
Starfish can reproduce through fragmentation, where a part of the organism breaks off and develops into a new individual.
Correct Answer:
A
— Starfish
Learn More →
Q. Which of the following is an example of mutualism? (2021)
A.
A lion hunting a zebra
B.
Bees pollinating flowers
C.
A tick feeding on a dog
D.
A bird eating ticks off a cow
Show solution
Solution
Mutualism is a symbiotic relationship where both species benefit, such as bees pollinating flowers.
Correct Answer:
B
— Bees pollinating flowers
Learn More →
Q. Which of the following is an example of physisorption? (2021) 2021
A.
Adsorption of hydrogen on palladium
B.
Adsorption of water on silica gel
C.
Adsorption of oxygen on activated charcoal
D.
Adsorption of ammonia on copper
Show solution
Solution
Physisorption involves weak Van der Waals forces, and the adsorption of water on silica gel is a classic example of this type of adsorption.
Correct Answer:
B
— Adsorption of water on silica gel
Learn More →
Q. Which of the following is an example of sexual reproduction? (2023)
A.
Budding in hydra
B.
Fission in amoeba
C.
Pollination in flowering plants
D.
Regeneration in planaria
Show solution
Solution
Pollination in flowering plants is a key process in sexual reproduction, involving the transfer of pollen to fertilize ovules.
Correct Answer:
C
— Pollination in flowering plants
Learn More →
Q. Which of the following is an example of sublimation? (2022)
A.
Ice melting
B.
Dry ice turning into gas
C.
Water boiling
D.
Salt dissolving in water
Show solution
Solution
Sublimation is the process where a solid turns directly into a gas, as seen with dry ice (solid CO2).
Correct Answer:
B
— Dry ice turning into gas
Learn More →
Q. Which of the following is an example of thermal expansion? (2021)
A.
A balloon inflating when heated
B.
Ice melting in water
C.
Water boiling
D.
A metal rod contracting in cold
Show solution
Solution
A balloon inflating when heated is an example of thermal expansion, as the gas inside expands with increased temperature.
Correct Answer:
A
— A balloon inflating when heated
Learn More →
Q. Which of the following is asexual reproduction? (2019)
A.
Budding in hydra
B.
Fertilization in frogs
C.
Pollination in flowering plants
D.
Binary fission in amoeba
Show solution
Solution
Binary fission in amoeba is a form of asexual reproduction where a single organism divides into two.
Correct Answer:
D
— Binary fission in amoeba
Learn More →
Q. Which of the following is known as the powerhouse of the cell? (2020)
A.
Nucleus
B.
Mitochondria
C.
Ribosome
D.
Endoplasmic Reticulum
Show solution
Solution
Mitochondria are known as the powerhouse of the cell because they produce ATP, the energy currency of the cell.
Correct Answer:
B
— Mitochondria
Learn More →
Q. Which of the following is NOT a benefit of biodiversity? (2022)
A.
Increased ecosystem productivity
B.
Stability of ecosystems
C.
Reduction of disease
D.
Increased pollution
Show solution
Solution
Increased pollution is not a benefit of biodiversity; rather, biodiversity helps in reducing pollution.
Correct Answer:
D
— Increased pollution
Learn More →
Q. Which of the following is NOT a benefit of biotechnology in agriculture? (2020)
A.
Increased crop yield
B.
Reduced pesticide use
C.
Enhanced food security
D.
Higher labor costs
Show solution
Solution
Higher labor costs are not a benefit of biotechnology; in fact, biotechnology often aims to reduce labor costs through increased efficiency.
Correct Answer:
D
— Higher labor costs
Learn More →
Q. Which of the following is NOT a benefit of biotechnology in medicine? (2020)
A.
Production of monoclonal antibodies
B.
Development of vaccines
C.
Creation of synthetic fertilizers
D.
Gene therapy
Show solution
Solution
Creation of synthetic fertilizers is not a benefit of biotechnology in medicine; it is related to agricultural biotechnology.
Correct Answer:
C
— Creation of synthetic fertilizers
Learn More →
Q. Which of the following is NOT a benefit of genetically modified crops? (2022)
A.
Increased yield
B.
Reduced pesticide use
C.
Enhanced nutritional content
D.
Higher cost of production
Show solution
Solution
Genetically modified crops are generally designed to reduce costs and increase yield, not to increase production costs.
Correct Answer:
D
— Higher cost of production
Learn More →
Q. Which of the following is NOT a benefit of genetically modified organisms (GMOs)? (2022)
A.
Increased resistance to pests
B.
Higher nutritional value
C.
Reduced agricultural yield
D.
Drought resistance
Show solution
Solution
Reduced agricultural yield is not a benefit of GMOs; in fact, they are designed to increase yield and resilience.
Correct Answer:
C
— Reduced agricultural yield
Learn More →
Showing 4891 to 4920 of 5509 (184 Pages)