Biology MCQs

Option A: Ligaments.

Option B: Tendon

Option C: Muscles.

Option D: None of these

Correct Answer: Tendon ✔

Option A: Ca & PO4

Option B: CaCO3

Option C: CaSO4

Option D: SiO2

Correct Answer: Ca & PO4 ✔

Option A: Hypocalcemia

Option B: Hypercalcemia

Option C: Clostridum tetani.

Option D: Low O2 level

Correct Answer: Hypocalcemia ✔

Option A: The major event in it is accumulation of lactic acid.

Option B: Lactic acid accumulation turns pH in acidic range leading to muscle ache.

Option C: Ionic imbalance may also cause it.

Option D: All of these

Correct Answer: All of these ✔

Option A: Ectoderm.

Option B: Endoderm.

Option C: Mesoderm.

Option D: All of these

Correct Answer: Mesoderm. ✔

Option A: An enzyme that digest endocuticle during an arthropodal ecdysis

Option B: A newly formed exoskeleton in authropods

Option C: A hormone that regulates moulting in arthropods

Option D: A process that involves moulting

Correct Answer: A hormone that regulates moulting in arthropods ✔

Option A: It permits gaseous exchange

Option B: It contains joints, for the same purpose as present in human skeletal system

Option C: It provides muscle attachment

Option D: Like all the other types of exoskeleton, they lack sensation

Correct Answer: It contains joints, for the same purpose as present in human skeletal system ✔

Option A: Accunulation of rigid proteins molecules in sarcoplam.

Option B: Unavailability of ATP, which is necessary to break the link between actin and myosin.

Option C: Decrease in body temperature after death.

Option D: Death of tissue due to unavailability of O2.

Correct Answer: Unavailability of ATP, which is necessary to break the link between actin and myosin. ✔

Option A: CaPO4

Option B: CaCO3

Option C: CaSO4

Option D: SiO2

Correct Answer: CaCO3 ✔

Option A: Binding sites of actin get attached to the myosin head.

Option B: Troponin uncovers the actin binding sites.

Option C: Tropomyosin gets removed from the binding sites of actin filaments.

Option D: Ca2+ goes back inside sarcoplasmic reticulum.

Correct Answer: Tropomyosin gets removed from the binding sites of actin filaments. ✔

Option A: Z- lines get closer

Option B: A band becomes short

Option C: 1 band elongates

Option D: There is no change in sarcomere

Correct Answer: Z- lines get closer ✔

Option A: Epicuticle

Option B: Procuticle

Option C: Ectocuticle

Option D: None of these

Correct Answer: Procuticle ✔

Option A: 9

Option B: 5

Option C: 6

Option D: 7

Correct Answer: 6 ✔

Option A: They are surrounded by single or double pieces of hard skeleton.

Option B: Their shell grows as the animal grows.

Option C: They have hydrostatic skeleton.

Option D: They move by tube feet

Correct Answer: They move by tube feet ✔

Option A: To bind with actin

Option B: To bind with tropomyosin.

Option C: To bind with Ca2+ ions.

Option D: All of these

Correct Answer: All of these ✔

Option A: Lengthening of the body.

Option B: Shortening of the body.

Option C: Widening of body

Option D: Thinning of body

Correct Answer: Thinning of body ✔

Option A: 7 nm.

Option B: 8 nm

Option C: 16nm

Option D: 10-100 ?m.

Correct Answer: 16nm ✔

Option A: Earthworm

Option B: Round worm

Option C: Tape worm

Option D: Pin worm

Correct Answer: Earthworm ✔

Option A: H- zone

Option B: M- Line

Option C: Z- Line

Option D: A band

Correct Answer: Z- Line ✔

Option A: Growth inhibitor

Option B: Growth stimulator

Option C: Growth hormone

Option D: None of these

Correct Answer: Growth stimulator ✔

Option A: They are multinucleated.

Option B: They are 10 – 100 ?m in diameter & surrounded by sarcolemma

Option C: They contain O2 storing molecules called hemoglobin.

Option D: Their cytoplasm contains high concentration of carbohydrates

Correct Answer: They contain O2 storing molecules called hemoglobin. ✔

Option A: Gibberellins

Option B: Abscisins

Option C: Auxins

Option D: Cytokinins

Correct Answer: Auxins ✔

Option A: They appear darker than smooth muscles by naked eye.

Option B: Alternating dark and light bands appear on their surface when visualized by naked eye.

Option C: Alternating dark and light bands appear on their surface when visualized via a microscope.

Option D: All of these

Correct Answer: Alternating dark and light bands appear on their surface when visualized via a microscope. ✔

Option A: Positive phototropism and negative geotropism

Option B: Negative phototropism and positive geotropism

Option C: Negative tactic movement and positive tropic movement

Option D: Positive geotropism of stem and roots

Correct Answer: Negative phototropism and positive geotropism ✔

Option A: A smooth muscle

Option B: A cardiac muscle

Option C: A skeletal muscle.

Option D: All of these

Correct Answer: A smooth muscle ✔

Option A: Turgor movement

Option B: Nastic movement

Option C: Tropic movements.

Option D: Growth movement

Correct Answer: Turgor movement ✔

Option A: A smooth muscle cell.

Option B: A cardiac muscle cell.

Option C: A skeletal muscle cell.

Option D: All of these

Correct Answer: A smooth muscle cell. ✔

Option A: Pith.

Option B: Pit.

Option C: Petiole

Option D: Ecdysone

Correct Answer: Petiole ✔

Option A: 2-3 weeks

Option B: 3-4 weeks.

Option C: 2-3 months.

Option D: 3-4 months.

Correct Answer: 2-3 months. ✔

Option A: Fibroblast and osteoblast.

Option B: Osteoblast and osteoclast.

Option C: Osteoclast and osteocyte

Option D: Onteocyte and osteoblast

Correct Answer: Fibroblast and osteoblast. ✔

Option A: Chemotropic movement

Option B: Chemotactic movement

Option C: Chemosastic movement

Option D: Haptonastic movement

Correct Answer: Chemotactic movement ✔

Option A: Healing properties.

Option B: Destructive properties.

Option C: Neutralizing properties.

Option D: Dead cells

Correct Answer: Dead cells ✔

Option A: Primary Xylem and secondary xylem.

Option B: Primary xylem and secondary phloem.

Option C: Primary xylem and primary phloem

Option D: Secondary xylem and secondary phloem.

Correct Answer: Primary xylem and primary phloem ✔

Option A: Open reduction.

Option B: Closed Fixation.

Option C: Open fixation.

Option D: Immobilization

Correct Answer: Open reduction. ✔

Option A: They are more common than in adult age.

Option B: Occur as a result of bone being thin and weak.

Option C: Due to good blood supply it results in quick healing.

Option D: It involves osteoblasts and osteocytes.

Correct Answer: Due to good blood supply it results in quick healing. ✔

Option A: Cork cambium

Option B: Pith.

Option C: Vascular cambium.

Option D: Both a and c

Correct Answer: Both a and c ✔

Option A: It results from estrogen deficiency.

Option B: Bone eating process takes over bone formation process.

Option C: There is reduction of bone mass and change in chemical composition of the matrix

Option D: It is common in old age.

Correct Answer: There is reduction of bone mass and change in chemical composition of the matrix ✔

Option A: Tracheids

Option B: Sclereids

Option C: Trachea

Option D: Collenchyma cells

Correct Answer: Tracheids ✔

Option A: Hypocalcaemia Tatanic spasms.

Option B: Osteomalacis.

Option C: Rickets.

Option D: Tetany

Correct Answer: Rickets. ✔

Option A: Cellulose.

Option B: Peptidoglycan and murein.

Option C: Lignin.

Option D: Pectin.

Correct Answer: Lignin. ✔

Option A: Progesterone.

Option B: Oestrogen.

Option C: Parathyroid hormone.

Option D: Calcitonin.

Correct Answer: Oestrogen. ✔

Option A: Between radius and ulna.

Option B: Between ulna and scapula

Option C: Between humerus and scapula

Option D: Between femur and tibia.

Correct Answer: Between femur and tibia. ✔

Option A: Large number of vacoules in a plant cell.

Option B: Higher ionic concentration inside vacuoles resulting from active pumping of ions at their tonoplastic membrane

Option C: Higher osmotic pressure of the cell vacuole

Option D: both b and c

Correct Answer: both b and c ✔

Option A: Synovial membrane.

Option B: Ligaments.

Option C: Muscles.

Option D: Tendon

Correct Answer: Ligaments. ✔

Option A: Fibrous joints.

Option B: Cartilaginous joints.

Option C: Synovial joints.

Option D: None of these

Correct Answer: Fibrous joints. ✔

Option A: Living cells of epidermis with higher turgor pressure.

Option B: Living cells of cortex and pith with higher turgor pressure.

Option C: Collenchyma cells

Option D: All of these

Correct Answer: All of these ✔

Option A: Immovable joint.

Option B: Slightly movable joint.

Option C: Freely movable joint.

Option D: Fibrous joint

Correct Answer: Freely movable joint. ✔

Option A: Larynx

Option B: Pharynx

Option C: Golttis

Option D: None of these

Correct Answer: Golttis ✔

Option A: 10

Option B: 3

Option C: 4

Option D: 9

Correct Answer: 9 ✔

Option A: Single

Option B: Both

Option C: Do not have opening

Option D: None of these

Correct Answer: Both ✔

Option A: Less than 7 month

Option B: Less than 8 month

Option C: Less than 9 month

Option D: More than 9 month

Correct Answer: Less than 7 month ✔

Option A: Cuticular

Option B: Cutaneous

Option C: Skin

Option D: Pulmonary

Correct Answer: Cutaneous ✔

Option A: Larynx

Option B: Trachea

Option C: Bronchi

Option D: Bronchioles

Correct Answer: Bronchi ✔

Option A: Buccal cavity

Option B: Pharynx

Option C: Larynx

Option D: Chest Cavity

Correct Answer: Larynx ✔

Option A: Posterior

Option B: Anterior

Option C: Lateral

Option D: All possible

Correct Answer: Posterior ✔

Option A: Cockroach

Option B: Earthworm

Option C: Aves

Option D: Frogs

Correct Answer: Aves ✔

Option A: 2

Option B: 3

Option C: 6

Option D: 8

Correct Answer: 8 ✔

Option A: Photorespiration

Option B: Calvin cycle

Option C: Both of these

Option D: None of these

Correct Answer: Calvin cycle ✔

Option A: 2

Option B: 3

Option C: 5

Option D: 4

Correct Answer: 4 ✔

Option A: Tuberculosis

Option B: Lungs cancer

Option C: Asthma

Option D: Emphysema

Correct Answer: Tuberculosis ✔

Option A: 15

Option B: 10

Option C: 20

Option D: 30

Correct Answer: 20 ✔

Option A: Lung cancer

Option B: Asthma

Option C: Emphysema

Option D: Pulmonary tuberculosis

Correct Answer: Emphysema ✔

Option A: 5

Option B: 90

Option C: 15

Option D: 10

Correct Answer: 10 ✔

A. CO2
B. O2
C. H2O
D. All of these

Correct Answer: D. All of these ✔

Option A: 54 ml

Option B: 60 ml

Option C: 64 ml

Option D: 50 ml

Correct Answer: 50 ml ✔

Option A: 5%

Option B: 70%

Option C: 20%

Option D: 10%

Correct Answer: 20% ✔

Option A: plus ve

Option B: – ve

Option C: No

Option D: All of these

Correct Answer: plus ve ✔

Option A: Glyoxisomes

Option B: Peroxisomes

Option C: Lysosomes

Option D: Mitochondria

Correct Answer: Peroxisomes ✔

Option A: 30%

Option B: 20%

Option C: 40%

Option D: 50%

Correct Answer: 40% ✔

Option A: 1200

Option B: 12000

Option C: 100,000

Option D: 1000

Correct Answer: 100,000 ✔

Option A: Temperature

Option B: Carbon dioxide

Option C: pH

Option D: All of these

Correct Answer: All of these ✔

Option A: 50

Option B: 1000

Option C: 5000

Option D: 8000

Correct Answer: 50 ✔

Option A: 10 mm

Option B: 60 mm

Option C: 10 cm

Option D: 100 mm

Correct Answer: 100 mm ✔

Option A: 10 ml

Option B: 100 ml

Option C: 200 ml

Option D: 100ml

Correct Answer: 200 ml ✔

Option A: 10 ml

Option B: 20 ml

Option C: 30 ml

Option D: 40 ml

Correct Answer: 20 ml ✔

Option A: Air

Option B: Water

Option C: Soil

Option D: None of these

Correct Answer: Air ✔

Option A: 16-30

Option B: 15-20

Option C: 5?10

Option D: 6?12

Correct Answer: 15-20 ✔

Option A: Cellular

Option B: Organismic

Option C: Both of these

Option D: None of these

Correct Answer: Cellular ✔

Option A: Disphragm

Option B: Pleura

Option C: Pericardium

Option D: Rib cage

Correct Answer: Pleura ✔

Option A: Organismic

Option B: Cellular

Option C: Both of these

Option D: None of these

Correct Answer: Cellular ✔

Option A: Air sacs

Option B: Alveoli

Option C: Bronchioles

Option D: Parabronchi

Correct Answer: Alveoli ✔

Option A: 6.1

Option B: 6.3

Option C: 7.1

Option D: 7.3

Correct Answer: 7.3 ✔

Option A: Glycolysis

Option B: Kreb’s cycle

Option C: Light dependent phase

Option D: none of these

Correct Answer: Glycolysis ✔

Option A: Oxidation.

Option B: Reduction.

Option C: Redox.

Option D: None of the above.

Correct Answer: Oxidation. ✔

Option A: 1

Option B: 2

Option C: 3

Option D: 4

Correct Answer: 3 ✔

Option A: 1%

Option B: 2%

Option C: 3%

Option D: 4%

Correct Answer: 2% ✔

Option A: NADH

Option B: Cytochrome a3

Option C: Water

Option D: Oxygen

Correct Answer: Oxygen ✔

Option A: Brain

Option B: Heart

Option C: Liver

Option D: Muscles

Correct Answer: Muscles ✔

Option A: Chlorophyll a

Option B: Chlorophyll b

Option C: Xanthophyll

Option D: Carotenes

Correct Answer: Chlorophyll a ✔

Option A: Hydrophilic

Option B: Hydrophobic

Option C: Both of these

Option D: None of these

Correct Answer: Hydrophobic ✔

Option A: Acetaldehyde

Option B: Methyl alcohol

Option C: Ethyl alcohol

Option D: Lactic acid

Correct Answer: Ethyl alcohol ✔

Option A: Magnesium

Option B: Iron

Option C: Chlorine

Option D: Oxygen

Correct Answer: Magnesium ✔

Option A: Orange – blue

Option B: Violet – red

Option C: Yellow – orange

Option D: Orange – red.

Correct Answer: D. Orange – red. ✔

Option A: Alcoholic fermentation

Option B: Lactic acid fermentation

Option C: Aerobic respiration

Option D: All of these

Correct Answer: Aerobic respiration ✔

Option A: Yellow

Option B: Red

Option C: Orange

Option D: Green

Correct Answer: Yellow ✔

Option A: Nucleus

Option B: Cytosol

Option C: Mitochondria.

Option D: Ribosomes

Correct Answer: ✔

Option A: Stroma

Option B: Grana

Option C: Thylakoid

Option D: Intergrana

Correct Answer: Thylakoid ✔

Option A: Grana

Option B: Stroma

Option C: Thylakoid

Option D: None of these

Correct Answer: Stroma ✔

Option A: 680 nm

Option B: 100 m

Option C: 700 nm

Option D: 670 nm

Correct Answer: 680 nm ✔

Option A: Leaves respire and utilize O2 and release CO2.

Option B: Stems

Option C: Roots

Option D: Branches

Correct Answer: Leaves respire and utilize O2 and release CO2. ✔