Q. Which type of root system is characteristic of monocots? (2020)
-
A.
Tap root system
-
B.
Fibrous root system
-
C.
Adventitious root system
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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
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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
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 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
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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
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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
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Q. Which type of solid has a definite melting point? (2022)
-
A.
Amorphous solid
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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
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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
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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
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Q. Which vitamin deficiency leads to scurvy? (2019)
-
A.
Vitamin A
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B.
Vitamin B12
-
C.
Vitamin C
-
D.
Vitamin D
Solution
Scurvy is caused by a deficiency of Vitamin C.
Correct Answer: C — Vitamin C
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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
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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
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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
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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
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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
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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
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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
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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
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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
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