Q71. Which type of RNA carries amino acids to the ribosome?
Correct: tRNA
Transfer RNA (tRNA) matches codons to amino acids.
Q72. What is the largest biome on Earth?
Correct: Ocean
Oceans cover about 71% of Earth's surface.
Q73. Which pigment gives plants their green color?
Correct: Chlorophyll
Chlorophyll absorbs light for photosynthesis.
Q74. What is the process of water movement through plants?
Correct: Transpiration
Transpiration pulls water from roots to leaves.
Q75. Which organelle breaks down waste in cells?
Correct: Lysosome
Lysosomes contain enzymes for digestion.
Q76. What is the term for inherited traits passed from parents?
Correct: Genes
Genes are segments of DNA that code for traits.
Q77. Which system coordinates body activities through hormones?
Correct: Endocrine system
The endocrine system releases hormones into the bloodstream.
Q78. What is the primary site of gas exchange in humans?
Correct: Lungs
Alveoli in lungs allow oxygen and carbon dioxide exchange.
Q79. Which process produces gametes?
Correct: Meiosis
Meiosis reduces chromosome number by half for reproduction.
Q80. What is the role of decomposers in an ecosystem?
Correct: Break down dead matter
Decomposers recycle nutrients back into the soil.
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