Biology Mcqs 08
What is the function of guard cells in plants? PhotosynthesisProtect the roots Open and close stomataStore foodC) Open and close stomataGuard cells regulate the opening and closing of stomata.
. What is the scientific study of plants called?Zoology BotanyEcologyGeneticsB) BotanyBotany is the branch of biology dealing with plants.
Which organ in the body filters blood? HeartLungsKidneysLiverC) KidneysThe kidneys filter waste and excess substances from blood.
Which vitamin is important for blood clotting?Vitamin AVitamin DVitamin EVitamin K D) Vitamin KVitamin K plays a key role in blood clotting.
Which part of the flower develops into fruit? Sepals PetalsOvaryAntherC) OvaryThe ovary swells and becomes the fruit after fertilization.
. What is the normal body temperature of a human in Celsius? 36.5°C37°C38°C 39°CB) 37°CThe average normal body temperature is around 37°C.
Which gas is essential for photosynthesis?OxygenCarbon dioxide NitrogenHydrogenB) Carbon dioxide Plants absorb carbon dioxide for photosynthesis.
What is the function of the large intestine?Absorb nutrientsProduce enzymesAbsorb waterDigest proteinsC) Absorb water The large intestine absorbs water and forms feces.
Which organ produces insulin?LivePancreasKidneyHeartB) Pancreas The pancreas produces insulin, which controls blood sugar.
Which blood group is known as the universal donor? ABABOD) OBlood group O-negative is the universal donor.
What type of joint is the knee?Ball and socketHingePivotGliding B) HingeThe knee is a hinge joint, allowing movement in one direction.
What is the pigment in red blood cells called?ChlorophyllHemoglobinMelanin KeratinB) HemoglobinHemoglobin carries oxygen in the blood.
Which blood vessels carry blood away from the heart?VeinsCapillariesArteriesLymph vessels C) ArteriesArteries carry oxygenated blood away from the heart.
What is the process of breaking down food called?DigestionRespirationExcretionAbsorptionA) DigestionDigestion is the breakdown of food into simpler substances.
Which vitamin prevents night blindness?Vitamin AVitamin B Vitamin CVitamin DA) Vitamin AVitamin A is essential for good vision, especially in dim light.