Comprehensive Biology Test 13
601. Classification System of Carolus Linnaeus:
Ans: Binomial Nomenclature
Explanation:
Linnaeus introduced binomial nomenclature, giving each species a two-part Latin name (genus + species).
602. Insectivorous Plant Among Below:
Ans: Drosera
Explanation:
Drosera (sundew) traps insects using sticky secretions to obtain nutrients in nutrient-poor soils.
603. Acid Stored in Batteries:
Ans: Sulfuric Acid
Explanation:
Lead-acid batteries use concentrated sulfuric acid as the electrolyte to store and release electrical energy.
604. Study of Blood Called:
Ans: Hematology
Explanation:
Hematology examines blood composition, diseases, and disorders like anemia, leukemia, and clotting defects.
605. Alternative Term for Uterus:
Ans: Womb
Explanation:
The uterus (womb) is the female reproductive organ where the embryo implants and develops during pregnancy.
606. Correcting Hypermetropia:
Ans: Convex (Converging) Lens
Explanation:
Convex lenses converge light onto the retina, correcting farsightedness (hypermetropia).
607. Plant Breeders Use Biotech To Overcome:
Ans: Micronutrient and Vitamin Deficiency
Explanation:
Biofortification in plants addresses nutrient deficiencies, improving the content of essential vitamins and minerals.
608. Plants Absorb Nitrogen In Form Of:
Ans: Nitrates
Explanation:
Plants primarily absorb nitrogen from the soil as nitrate (NO₃⁻) ions for protein and nucleic acid synthesis.
609. Winter Sleep in Animals:
Ans: Hibernation
Explanation:
Hibernation is a state of inactivity during winter where animals reduce metabolic activity, conserving energy and surviving cold conditions.
610. Pain-Relieving Drugs Called:
Ans: Analgesics
Explanation:
Analgesics reduce or relieve pain without causing loss of consciousness; examples include aspirin, ibuprofen, and acetaminophen.
611. Amino Acids Needed For:
Ans: Protein Synthesis
Explanation:
Amino acids are building blocks of proteins, required for growth, repair, and synthesis of enzymes and structural components.
612. Endocrine Gland in Thoracic Cavity:
Ans: Thymus Gland
Explanation:
Thymus is a primary lymphoid organ in the chest that produces T-lymphocytes, crucial for adaptive immunity.
613. Pleura Covers:
Ans: Lungs
Explanation:
Pleura is a double-layered membrane surrounding lungs, reducing friction during breathing movements.
614. Dehydration Causes Deficiency Of:
Ans: Sodium Chloride
Explanation:
During dehydration, electrolytes like sodium chloride are lost along with water, affecting cellular and bodily functions.
615. Brain Lobe Associated With Hearing:
Ans: Temporal Lobe
Explanation:
The temporal lobe processes auditory information and is crucial for hearing, speech perception, and memory.
616. Eye Part Swells When Dust Enters:
Ans: Conjunctiva
Explanation:
The conjunctiva, a thin membrane over the eyeball, swells (redness) to protect the eye from dust or foreign particles.
617. Storage Organ in Cabbage:
Ans: Leaves
Explanation:
Cabbage stores food primarily in its leaves, which become thick and fleshy, rich in nutrients and water.
618. Pneumoconiosis Caused By:
Ans: Iron Dust
Explanation:
Inhalation of iron or mineral dust leads to pneumoconiosis, a lung disease characterized by fibrosis and breathing difficulty.
619. Image on Retina:
Ans: Real, Inverted, and Smaller than Object
Explanation:
The lens forms a real, inverted, and reduced image on the retina, which is then processed by the brain to perceive upright objects.
620. Study of Fungi:
Ans: Mycology
Explanation:
Mycology is the branch of biology studying fungi, including their genetics, physiology, and ecological roles.
621. Ascending Movement of Sap in Plants:
Ans: Xylem
Explanation:
Xylem vessels transport water and minerals from roots to leaves through capillary action, root pressure, and transpiration pull.
622. Hypoglycemia Means:
Ans: Low Blood Sugar
Explanation:
Hypoglycemia refers to abnormally low glucose levels in the blood, causing weakness, dizziness, and potential metabolic disturbances.
623. Nutritional Tissue of Seeds in Higher Plants:
Ans: Endosperm
Explanation:
Endosperm is a tissue inside seeds that stores starch, proteins, and oils to nourish the developing embryo.
624. Process of Converting Extra Light Energy in Photosynthesis:
Ans: Photochemical Reaction (Light Reaction)
Explanation:
Light energy is absorbed by chlorophyll and converted into chemical energy (ATP, NADPH) during the light-dependent reactions of photosynthesis.
625. Discovery of Blood Groups:
Ans: Landsteiner
Explanation:
Karl Landsteiner discovered A, B, AB, and O blood groups, revolutionizing safe blood transfusions.
626. Cell Wall Containing Cellulose Found In:
Ans: Plant Cells
Explanation:
Cellulose forms the rigid structure of plant cell walls, providing mechanical support and protection.
627. Why Vegetables Spoil Quickly:
Ans: High Water Content
Explanation:
Vegetables with high moisture content are prone to microbial growth, leading to rapid spoilage.
628. Mercury Poisoning Causes Which Disease in Humans:
Ans: Minamata Disease
Explanation:
Minamata disease results from mercury poisoning, causing neurological symptoms, primarily from contaminated fish consumption.
629. Photosynthesis Most Efficient in Which Light:
Ans: Red Light
Explanation:
Red light is absorbed efficiently by chlorophyll, driving the maximum rate of photosynthesis.
630. Minimum Audible Sound Level for Most Humans:
Ans: 0 dB
Explanation:
The threshold of hearing for humans is approximately 0 decibels; normal sounds are comfortably heard between 60–80 dB.
631. Sense of Taste:
Ans: Tongue
Explanation:
Taste is perceived by taste buds on the tongue, detecting sweet, sour, salty, bitter, and umami flavors.
632. Blood Cancer Known As:
Ans: Leukemia
Explanation:
Leukemia is a type of blood cancer affecting white blood cells, leading to uncontrolled proliferation and reduced immunity.
633. Who Coined the Term “Genetics”:
Ans: Bateson
Explanation:
William Bateson coined the term "Genetics" in 1905 for the scientific study of heredity and variation.
634. Father of Genetics:
Ans: Gregor Johann Mendel
Explanation:
Mendel discovered the basic laws of inheritance through pea plant experiments, laying the foundation of modern genetics.
635. Bioaccumulative Substance in Food Chains:
Ans: DDT
Explanation:
DDT, a pesticide, accumulates in organisms through the food chain, causing toxicity and ecological imbalance.
636. Why Animal Protein Is First-Grade:
Ans: Rich in Essential Amino Acids
Explanation:
Animal proteins contain all essential amino acids in sufficient quantities, making them complete proteins for human nutrition.
637. Strongest Bone in Body:
Ans: Jawbone (Mandible)
Explanation:
The mandible is the strongest bone, essential for chewing and structural support of the face.
638. Athlete’s Foot Caused By:
An: Fungus
Explanation:
Athlete’s foot is a fungal infection affecting skin between toes, causing itching and scaling.
639. Angora Wool Obtained From:
Ans: Rabbit
Explanation:
Angora wool comes from Angora rabbits, known for their soft, long, and warm fiber.
640. Genes Located In:
Ans: Chromosomes
Explanation:
Genes are units of heredity located on chromosomes, determining traits in an organism.
641. Pituitary Gland Located At:
Ans: Base of Brain
Explanation:
The pituitary gland, the master endocrine gland, regulates hormones controlling growth, metabolism, and reproduction.
642. Transpiration From Leaves Called:
Ans: Leaf Transpiration
Explanation:
Leaf transpiration is water loss in the form of vapor through stomata, aiding in nutrient transport and cooling.
643. Malaria Discovered By & Vector:
Ans: Ronald Ross; Female Anopheles
Explanation:
Ronald Ross discovered the role of female Anopheles mosquitoes in transmitting malaria parasites.
644. Science of Classification:
Ans: Taxonomy
Explanation:
Taxonomy studies classification, nomenclature, and identification of organisms based on shared characteristics.
645. How Vegetable Oils Convert to Ghee:
Ans: Hydrogenation
Explanation:
Vegetable oils are hydrogenated to produce ghee, converting unsaturated fats to saturated fats for stability and taste.
646. Loss of Substance During Excretion (Sodium Chloride) Due To:
Ans: Sweating
Explanation:
During excretion, sodium chloride and water are lost via sweat, helping maintain electrolyte balance.
647. Universal Blood Donors:
Ans: Blood Group O
Explanation:
O blood group lacks A/B antigens, making them universal donors compatible with all recipients.
648. Radioimmunoassay (RIA) Used For:
Ans: Detecting Antibodies & Hormones in Blood
Explanation:
RIA measures trace amounts of hormones or antibodies in blood using radioactive markers for diagnosis.
649. Glaucoma Disease:
Ans: Eye Disease
Explanation:
Glaucoma damages the optic nerve due to high intraocular pressure, leading to vision loss if untreated.
650. Plasma Membrane Composed Of (Eukaryotic Cells):
Ans: Phospholipids
Explanation:
Eukaryotic plasma membrane is a lipid bilayer composed mainly of phospholipids and proteins, regulating entry and exit of substances.