Q. Which type of orbit allows a satellite to pass over the same point on the Earth's surface at the same local solar time every day?
A.
Polar orbit
B.
Geostationary orbit
C.
Sun-synchronous orbit
D.
Elliptical orbit
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Solution
A sun-synchronous orbit allows a satellite to pass over the same point on the Earth's surface at the same local solar time every day, as it is synchronized with the Earth's position relative to the Sun.
Correct Answer: C — Sun-synchronous orbit
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Q. Which type of plant is known for having a dominant sporophyte generation? (2021)
A.
Mosses
B.
Liverworts
C.
Ferns
D.
Algae
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Solution
Ferns have a dominant sporophyte generation, which is the diploid phase of their life cycle.
Correct Answer: C — Ferns
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Q. Which type of plant is known for having a life cycle that alternates between haploid and diploid generations? (2021)
A.
Fungi
B.
Bryophytes
C.
Angiosperms
D.
All of the above
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Solution
All of the above groups exhibit a life cycle that alternates between haploid (gametophyte) and diploid (sporophyte) generations.
Correct Answer: D — All of the above
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Q. Which type of plant tissue is involved in the storage of food? (2023)
A.
Parenchyma
B.
Collenchyma
C.
Sclerenchyma
D.
Xylem
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Solution
Parenchyma tissue is primarily involved in the storage of food and can also perform photosynthesis.
Correct Answer: A — Parenchyma
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Q. Which type of plant tissue is primarily involved in storage? (2023)
A.
Parenchyma
B.
Collenchyma
C.
Sclerenchyma
D.
Xylem
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Solution
Parenchyma tissue is primarily involved in storage, as it can store starch, oils, and water.
Correct Answer: A — Parenchyma
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Q. Which type of plant tissue is responsible for growth? (2022)
A.
Parenchyma
B.
Collenchyma
C.
Meristematic tissue
D.
Sclerenchyma
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Solution
Meristematic tissue is responsible for the growth of plants as it contains undifferentiated cells that can divide.
Correct Answer: C — Meristematic tissue
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Q. Which type of plant tissue is responsible for the storage of food? (2023)
A.
Parenchyma
B.
Collenchyma
C.
Sclerenchyma
D.
Xylem
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Solution
Parenchyma tissue is primarily responsible for the storage of food and can also perform photosynthesis.
Correct Answer: A — Parenchyma
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Q. Which type of plant tissue provides support and flexibility? (2020)
A.
Parenchyma
B.
Collenchyma
C.
Sclerenchyma
D.
Xylem
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Solution
Collenchyma provides support and flexibility to the plant, especially in young stems and leaves.
Correct Answer: B — Collenchyma
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Q. Which type of pollination occurs when pollen is transferred from one flower to another flower of the same species? (2021)
A.
Self-pollination
B.
Cross-pollination
C.
Artificial pollination
D.
Wind pollination
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Solution
Cross-pollination occurs when pollen is transferred from one flower to another flower of the same species.
Correct Answer: B — Cross-pollination
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Q. Which type of pollination occurs when pollen is transferred from the anther to the stigma of the same flower? (2021)
A.
Cross-pollination
B.
Self-pollination
C.
Wind pollination
D.
Insect pollination
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Solution
Self-pollination occurs when pollen is transferred from the anther to the stigma of the same flower.
Correct Answer: B — Self-pollination
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Q. Which type of pollination occurs within the same flower? (2021)
A.
Cross-pollination
B.
Self-pollination
C.
Wind pollination
D.
Insect pollination
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Solution
Self-pollination occurs when pollen from the anther of a flower fertilizes the ovule of the same flower.
Correct Answer: B — Self-pollination
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Q. Which type of radiation consists of helium nuclei?
A.
Alpha radiation
B.
Beta radiation
C.
Gamma radiation
D.
X-rays
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Solution
Alpha radiation consists of helium nuclei, which are emitted during certain types of radioactive decay.
Correct Answer: A — Alpha radiation
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Q. Which type of radiation has the highest penetrating power? (2019)
A.
Alpha particles
B.
Beta particles
C.
Gamma rays
D.
Neutrons
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Solution
Gamma rays have the highest penetrating power among the types of radiation, able to pass through most materials.
Correct Answer: C — Gamma rays
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Q. Which type of reproduction involves the fusion of gametes? (2022)
A.
Asexual reproduction
B.
Vegetative propagation
C.
Sexual reproduction
D.
Budding
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Solution
Sexual reproduction involves the fusion of male and female gametes to form a zygote.
Correct Answer: C — Sexual reproduction
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Q. Which type of reproduction is characterized by the formation of a new organism from a part of the parent organism? (2023)
A.
Budding
B.
Binary fission
C.
Fragmentation
D.
All of the above
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Solution
All of the mentioned methods (budding, binary fission, and fragmentation) involve the formation of new organisms from parts of the parent.
Correct Answer: D — All of the above
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Q. Which type of reproduction is most common in fungi? (2023)
A.
Asexual reproduction
B.
Sexual reproduction
C.
Both asexual and sexual reproduction
D.
None of the above
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Solution
Fungi can reproduce both asexually (through spores) and sexually (through the fusion of hyphae).
Correct Answer: C — Both asexual and sexual reproduction
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Q. Which type of reproduction is most common in unicellular organisms? (2019)
A.
Sexual reproduction
B.
Asexual reproduction
C.
Budding
D.
Fragmentation
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Solution
Asexual reproduction is most common in unicellular organisms, allowing for rapid population growth.
Correct Answer: B — Asexual reproduction
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Q. Which type of reproduction is most likely to occur in stable environments? (2023)
A.
Asexual reproduction
B.
Sexual reproduction
C.
Budding
D.
Fragmentation
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Solution
Asexual reproduction is favored in stable environments as it allows for rapid population increase without the need for mates.
Correct Answer: A — Asexual reproduction
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Q. Which type of reproduction results in offspring that are genetically identical to the parent? (2022)
A.
Asexual reproduction
B.
Sexual reproduction
C.
Both asexual and sexual reproduction
D.
None of the above
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Solution
Asexual reproduction results in offspring that are genetically identical to the parent organism.
Correct Answer: A — Asexual reproduction
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Q. Which type of root system is characteristic of monocots? (2020)
A.
Tap root system
B.
Fibrous root system
C.
Adventitious root system
D.
Lateral root system
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Solution
Monocots typically have a fibrous root system, which consists of many thin roots that spread out.
Correct Answer: B — Fibrous root system
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Q. Which type of root system is characterized by a single main root with smaller lateral roots? (2020)
A.
Fibrous root system
B.
Tap root system
C.
Adventitious root system
D.
Modified root system
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Solution
A tap root system is characterized by a single main root that grows deeper into the soil with smaller lateral roots.
Correct Answer: B — Tap root system
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Q. Which type of satellite orbit is best for monitoring weather patterns?
A.
Geostationary orbit
B.
Polar orbit
C.
Elliptical orbit
D.
Low Earth orbit
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Solution
Geostationary satellites are ideal for monitoring weather patterns as they provide a constant view of the same area.
Correct Answer: A — Geostationary orbit
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Q. Which type of satellite orbit is best for weather monitoring?
A.
Geostationary orbit
B.
Polar orbit
C.
Elliptical orbit
D.
Low Earth orbit
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Solution
Geostationary orbits are ideal for weather monitoring as they provide a constant view of the same area of the Earth.
Correct Answer: A — Geostationary orbit
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Q. Which type of semiconductor has a higher concentration of holes? (2023)
A.
N-type
B.
P-type
C.
Intrinsic
D.
Extrinsic
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Solution
P-type semiconductors have a higher concentration of holes compared to N-type semiconductors.
Correct Answer: B — P-type
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Q. Which type of semiconductor has an excess of electrons?
A.
P-type
B.
N-type
C.
Intrinsic
D.
Extrinsic
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Solution
N-type semiconductors have an excess of electrons due to the addition of donor impurities.
Correct Answer: B — N-type
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Q. Which type of semiconductor is formed by doping silicon with phosphorus? (2020)
A.
p-type
B.
n-type
C.
Intrinsic
D.
Superconducting
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Solution
Doping silicon with phosphorus creates an n-type semiconductor due to the addition of extra electrons.
Correct Answer: B — n-type
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Q. Which type of solid has a definite melting point and is composed of molecules held together by van der Waals forces? (2022)
A.
Ionic solid
B.
Metallic solid
C.
Molecular solid
D.
Covalent solid
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Solution
Molecular solids are composed of molecules held together by van der Waals forces and have a definite melting point.
Correct Answer: C — Molecular solid
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Q. Which type of solid has a definite melting point and is usually hard and brittle? (2022)
A.
Molecular solids
B.
Ionic solids
C.
Metallic solids
D.
Amorphous solids
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Solution
Ionic solids have a definite melting point and are typically hard and brittle due to the strong ionic bonds between the ions.
Correct Answer: B — Ionic solids
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Q. Which type of solid has a definite melting point? (2022)
A.
Amorphous solid
B.
Crystalline solid
C.
Polymeric solid
D.
Metallic solid
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Solution
Crystalline solids have a definite melting point due to their ordered structure, unlike amorphous solids which melt over a range of temperatures.
Correct Answer: B — Crystalline solid
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Q. Which type of solution does Raoult's Law apply to most accurately?
A.
Ideal solutions
B.
Non-ideal solutions
C.
Concentrated solutions
D.
Dilute solutions
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Solution
Raoult's Law applies most accurately to ideal solutions, where interactions between different molecules are similar to those in pure substances.
Correct Answer: A — Ideal solutions
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