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111 Which organelle is responsible for protein synthesis?

A: Golgi apparatus

B: Mitochondria

C: Rough endoplasmic reticulum (RER)

D: Lysosomes

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112 What is the primary function of the nucleus?

A: Energy production

B: Storage of genetic material

C: Photosynthesis

D: Lipid synthesis

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113 How do plants regulate water loss?

A: Through transpiration

B: By photosynthesis

C: By respiration

D: Through osmosis

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114 Which term describes animals that excrete urea as their primary nitrogenous waste?

A: Ureotelic

B: Ammonotelic

C: Uricotelic

D: Aquatic

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115 What is the function of the rectal gland in sharks?

A: Absorbing nutrients

B: Excreting salt

C: Regulating blood pH

D: Maintaining buoyancy

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116 How do marine fish cope with the hypertonic environment?

A: They produce more urine

B: They drink large amounts of water

C: They excrete excess water

D: They absorb salt through their skin

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117 What is the main organ for osmoregulation in humans?

A: Liver

B: Heart

C: Kidneys

D: Lungs

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118 Which of the following is true about euryhaline organisms?

A: They cannot tolerate salinity changes

B: They thrive only in freshwater

C: They can survive in varying salinities

D: They are all marine fish

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119 How do freshwater fish primarily maintain their osmotic balance?

A: By drinking seawater

B: By producing concentrated urine

C: By actively absorbing salts

D: By excreting dilute urine

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120 What type of organisms are osmoconformers?

A: Freshwater fish

B: Marine invertebrates

C: Terrestrial mammals

D: Amphibians

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