Q. Which type of reproduction is most common in unicellular organisms? (2019)
-
A.
Sexual reproduction
-
B.
Asexual reproduction
-
C.
Budding
-
D.
Fragmentation
Solution
Asexual reproduction is most common in unicellular organisms, allowing for rapid population growth.
Correct Answer: B — Asexual reproduction
Learn More →
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
Solution
Asexual reproduction results in offspring that are genetically identical to the parent organism.
Correct Answer: A — Asexual reproduction
Learn More →
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
Solution
Monocots typically have a fibrous root system, which consists of many thin roots that spread out.
Correct Answer: B — Fibrous root system
Learn More →
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
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
Learn More →
Q. Which type of semiconductor has a higher concentration of holes? (2023)
-
A.
N-type
-
B.
P-type
-
C.
Intrinsic
-
D.
Extrinsic
Solution
P-type semiconductors have a higher concentration of holes compared to N-type semiconductors.
Correct Answer: B — P-type
Learn More →
Q. Which type of semiconductor is formed by doping silicon with phosphorus? (2020)
-
A.
p-type
-
B.
n-type
-
C.
Intrinsic
-
D.
Superconducting
Solution
Doping silicon with phosphorus creates an n-type semiconductor due to the addition of extra electrons.
Correct Answer: B — n-type
Learn More →
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
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
Learn More →
Q. Which type of solid has a definite melting point? (2022)
-
A.
Amorphous solid
-
B.
Crystalline solid
-
C.
Polymeric solid
-
D.
Metallic solid
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
Learn More →
Q. Which type of tissue is responsible for movement in animals? (2019)
-
A.
Epithelial Tissue
-
B.
Connective Tissue
-
C.
Muscle Tissue
-
D.
Nervous Tissue
Solution
Muscle tissue is responsible for movement in animals.
Correct Answer: C — Muscle Tissue
Learn More →
Q. Which type of tissue is responsible for the movement of the body? (2021)
-
A.
Epithelial Tissue
-
B.
Connective Tissue
-
C.
Muscle Tissue
-
D.
Nervous Tissue
Solution
Muscle tissue is responsible for the movement of the body.
Correct Answer: C — Muscle Tissue
Learn More →
Q. Which vitamin deficiency leads to scurvy? (2019)
-
A.
Vitamin A
-
B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Scurvy is caused by a deficiency of Vitamin C.
Correct Answer: C — Vitamin C
Learn More →
Q. Which vitamin is a coenzyme in the metabolism of carbohydrates? (2019)
-
A.
Vitamin A
-
B.
Vitamin B1
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin B1 (thiamine) acts as a coenzyme in carbohydrate metabolism.
Correct Answer: B — Vitamin B1
Learn More →
Q. Which vitamin is essential for blood clotting? (2023)
-
A.
Vitamin K
-
B.
Vitamin E
-
C.
Vitamin A
-
D.
Vitamin D
Solution
Vitamin K is essential for the synthesis of proteins required for blood clotting.
Correct Answer: A — Vitamin K
Learn More →
Q. Which vitamin is known to be a coenzyme in carbohydrate metabolism? (2019)
-
A.
Vitamin A
-
B.
Vitamin B1
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin B1 (thiamine) acts as a coenzyme in the metabolism of carbohydrates.
Correct Answer: B — Vitamin B1
Learn More →
Q. Which vitamin is primarily absorbed in the ileum of the small intestine? (2023)
-
A.
Vitamin A
-
B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin B12 is primarily absorbed in the ileum of the small intestine.
Correct Answer: B — Vitamin B12
Learn More →
Q. Which vitamin is primarily absorbed in the ileum? (2020)
-
A.
Vitamin A
-
B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin B12 is primarily absorbed in the ileum of the small intestine.
Correct Answer: B — Vitamin B12
Learn More →
Q. Which vitamin is primarily absorbed in the small intestine? (2023)
-
A.
Vitamin A
-
B.
Vitamin C
-
C.
Vitamin B12
-
D.
Vitamin K
Solution
Vitamin B12 is primarily absorbed in the small intestine, specifically in the ileum.
Correct Answer: C — Vitamin B12
Learn More →
Q. Which vitamin is primarily involved in vision? (2020)
-
A.
Vitamin A
-
B.
Vitamin C
-
C.
Vitamin D
-
D.
Vitamin E
Solution
Vitamin A is essential for the formation of rhodopsin, a pigment in the retina that is crucial for vision.
Correct Answer: A — Vitamin A
Learn More →
Q. Which vitamin is primarily obtained from citrus fruits? (2021)
-
A.
Vitamin A
-
B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Vitamin C is abundant in citrus fruits like oranges, lemons, and grapefruits.
Correct Answer: C — Vitamin C
Learn More →
Q. Which wavelength of light is least effective for photosynthesis? (2022)
-
A.
Red light
-
B.
Blue light
-
C.
Green light
-
D.
Yellow light
Solution
Green light is least effective for photosynthesis because it is mostly reflected by chlorophyll.
Correct Answer: C — Green light
Learn More →
Q. Which wavelength of light is most effective for photosynthesis? (2020)
-
A.
Green light
-
B.
Red light
-
C.
Blue light
-
D.
Yellow light
Solution
Blue light is most effective for photosynthesis as it is absorbed strongly by chlorophyll.
Correct Answer: C — Blue light
Learn More →
Q. Who is known as the father of taxonomy? (2019)
-
A.
Charles Darwin
-
B.
Carl Linnaeus
-
C.
Gregor Mendel
-
D.
Louis Pasteur
Solution
Carl Linnaeus is known as the father of taxonomy for developing the system of naming organisms using binomial nomenclature.
Correct Answer: B — Carl Linnaeus
Learn More →
Showing 2821 to 2842 of 2842 (95 Pages)