Biology Mcqs 07
What is the study of heredity called?CytologyEcology GeneticsAnatomyC) GeneticsGenetics is the science of heredity and variation.
Which vitamin is produced in the skin by sunlight? Vitamin AVitamin C Vitamin DVitamin KC) Vitamin DSunlight helps skin synthesize Vitamin D.
Which is the main nitrogenous waste in humans? AmmoniaUreaUric acid Nitrogen gasB) UreaHumans excrete urea through urine.
What is the smallest bone in the human body?StapesFemurUlna Tibia A) Stapes The stapes (in the ear) is the smallest bone.
. What is the mode of nutrition in animals?) AutotrophicHeterotrophicSaprotrophicParasiticB) Heterotrophic Animals depend on other organisms for food.
What is the liquid part of blood called?PlasmaPlateletsWBCsRBCsA) Plasma: Plasma is the yellowish liquid part of blood
Which part of a plant is involved in reproduction?LeafStemFlower Root C) Flower: Flowers are the reproductive organs of plants.
What type of teeth are used for tearing food?IncisorsCaninesMolars PremolarsB) Canines Canines are pointed teeth used for tearing.
Which part of the ear helps in balancing the body? CochleaPinnaEar drum Semi-circular canalsD) Semi-circular canalsThe semi-circular canals detect balance and movement.
. What is the scientific name of humans?Homo erectus Homo sapiensAustralopithecus Homo habilis: B) Homo sapiensThe scientific name of modern humans is Homo sapiens.
What is the process by which plants make their own food?RespirationPhotosynthesis Digestion TranspirationB) PhotosynthesisPhotosynthesis allows plants to make food using sunlight.
What is the largest part of the human brain?CerebellumMedullaCerebrumThalamusC) Cerebrum The cerebrum controls thinking, memory, and voluntary actions.
Which disease is caused by a virus?TuberculosisMalariaAIDSTyphoid C) AIDSAIDS is caused by the Human Immunodeficiency Virus (HIV).
What is the main excretory organ in humans? Liver Kidney LungsSkin B) KidneyKidneys filter waste products from blood.
Which part of a leaf allows gas exchange?VeinsMidribStomataPetioleC) Stomata Stomata are tiny openings that control gas exchange