Q. 56. Which of the following help in the synthesis of proteins from amino acids?
(A) Mitochondria
(B) Golgi bodies
(C) Plastids
(D) Ribosomes
Answer:
(D) Ribosomes
Explanation:
Ribosomes act as the cellular machinery responsible for decoding mRNA and assembling amino acids into proteins.
Q. 57. What is mushroom?
(A) Fungi
(B) Bacteria
(C) Plant
(D) Virus
Answer:
(A) Fungi
Explanation:
A mushroom is the fleshy, spore-bearing fruiting body of a fungus.
Q. 58. An essential need for germination of seed is the presence of
(A) Minerals
(B) Water
(C) Light
(D) Temperature
Answer:
(B) Water
Explanation:
Water triggers the biochemical processes essential for germination by activating enzymes and breaking seed dormancy.
Q. 59. During Photosynthesis, plants make use of sunlight to convert water and carbon dioxide to
(A) Carbohydrates
(B) Proteins
(C) Hydrogen
(D) Enzymes
Answer:
(A) Carbohydrates
Explanation:
Photosynthesis converts water and carbon dioxide into oxygen and energy-rich carbohydrates (such as glucose).
Q. 60. What is the carrier of the disease malaria?
(A) Sand fly
(B) Aedes Mosquito
(C) Culex Mosquito
(D) Anopheles Female Mosquito
Answer:
(D) Anopheles Female Mosquito
Explanation:
The Plasmodium parasite that causes malaria is transmitted to humans exclusively through the bites of infected female Anopheles mosquitoes.
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