Que- Which of the following statements is incorrect about skeletal muscle fibers?
a. They are multinucleated.
b. They are 10 – 100 ?m in diameter & surrounded by sarcolemma
c. They contain O2 storing molecules called hemoglobin.
d. Their cytoplasm contains high concentration of carbohydrates
Answer- They contain O2 storing molecules called hemoglobin.
Que- Gibberellins is an example of_________________?
a. Growth inhibitor
b. Growth stimulator
c. Growth hormone
d. None of these
Answer- Growth stimulator
Que- A smallest contractile unit of muscle contraction called sarcomere is the area between two:
a. H- zone
b. M- Line
c. Z- Line
d. A band
Answer- Z- Line
Que- Which of the following animal has a hydrostatic skeleton?
a. Earthworm
b. Round worm
c. Tape worm
d. Pin worm
Answer- Earthworm
Que- Diameter of thick filament is____________?
a. 7 nm.
b. 8 nm
c. 16nm
d. 10-100 ?m.
Answer- 16nm
Que- In an annelids, the contraction of circular muscle results in___________?
a. Lengthening of the body.
b. Shortening of the body.
c. Widening of body
d. Thinning of body
Answer- Thinning of body
Que- The most important function of troponin is___________?
a. To bind with actin
b. To bind with tropomyosin.
c. To bind with Ca2+ ions.
d. All of these
Answer- All of these
Que- Which of the following statement is incorrect about Molluscans?
a. They are surrounded by single or double pieces of hard skeleton.
b. Their shell grows as the animal grows.
c. They have hydrostatic skeleton.
d. They move by tube feet
Answer- They move by tube feet
Que- If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules:
a. 9.0
b. 5.0
c. 6.0
d. 7.0
Answer- 6.0
Que- Which one of the following forms the blk of exoskeleton of an arthropod?
a. Epicuticle
b. Procuticle
c. Ectocuticle
d. None of these
Answer- Procuticle
Que- What happens during muscle contraction to the length of each myosin and action filament?
a. Z- lines get closer
b. A band becomes short
c. 1 band elongates
d. There is no change in sarcomere
Answer- Z- lines get closer
Que- Which of the following step occurs immediately after binding of Ca2+ with troponin molecule during muscle contraction.
a. Binding sites of actin get attached to the myosin head.
b. Troponin uncovers the actin binding sites.
c. Tropomyosin gets removed from the binding sites of actin filaments.
d. Ca2+ goes back inside sarcoplasmic reticulum.
Answer- Tropomyosin gets removed from the binding sites of actin filaments.
Que- Exoskeleton of a marine snail is composed of________________?
a. CaPO4
b. CaCO3
c. CaSO4
d. SiO2
Answer- CaCO3
Que- Rigor mortis i.e, stiffening of body after death results from__________?
a. Accunulation of rigid proteins molecules in sarcoplam.
b. Unavailability of ATP, which is necessary to break the link between actin and myosin.
c. Decrease in body temperature after death.
d. Death of tissue due to unavailability of O2.
Answer- Unavailability of ATP, which is necessary to break the link between actin and myosin.
Que- Which of the following statement about an arthropod exoskeleton is incorrect?
a. It permits gaseous exchange
b. It contains joints, for the same purpose as present in human skeletal system
c. It provides muscle attachment
d. Like all the other types of exoskeleton, they lack sensation
Answer- It contains joints, for the same purpose as present in human skeletal system
Que- Ecdysone is_________________?
a. An enzyme that digest endocuticle during an arthropodal ecdysis
b. A newly formed exoskeleton in authropods
c. A hormone that regulates moulting in arthropods
d. A process that involves moulting
Answer- A hormone that regulates moulting in arthropods
Que- Endoskeleton is secreted by?
a. Ectoderm.
b. Endoderm.
c. Mesoderm.
d. All of these
Answer- Mesoderm.
Que- Which of the following statement about fatigue is correct?
a. The major event in it is accumulation of lactic acid.
b. Lactic acid accumulation turns pH in acidic range leading to muscle ache.
c. Ionic imbalance may also cause it.
d. All of these
Answer- All of these
Que- Tetany is caused by__________?
a. Hypocalcemia
b. Hypercalcemia
c. Clostridum tetani.
d. Low O2 level
Answer- Hypocalcemia
Que- Collagen fibers of bone are hardened by deposition of_____________?
a. Ca & PO4
b. CaCO3
c. CaSO4
d. SiO2
Answer- Ca & PO4
Que- Which one of the following is an example of a non-elastic connective tissue?
a. Ligaments.
b. Tendon
c. Muscles.
d. None of these
Answer- Tendon
Que- Which one of the following is avascular structure?
a. A compact bone.
b. A spongy bone.
c. Cartilage
d. All of these
Answer- Cartilage
Que- Which of the following muscle is an antagonistic member of Biceps brachii?
a. Bracheoradialis
b. Brachialis.
c. Intercostals
d. Triceps
Answer- Triceps
Que- Which of the following bone is not present in the hind-limb?
a. Femur
b. Tibia
c. Radius
d. Fibula
Answer- Radius
Que- Insertion of Biceps is on_________?
a. Ulna
b. Radius
c. Olecronon process of ulna.
d. Scapula
Answer- Radius
Que- How many bones are present in the wrist?
a. 4 bones
b. 6 bones
c. 8 bones
d. 14 bones
Answer- 8 bones
Que- Which of the following statement is incorrect regarding the locomotion in Euglena?
a. Move with the help of flagellum, attached to the anterior pole of the body.
b. Flagellum whipping backwards moving the organism forward, and when moves forward the organism moves backward.
c. Myonemes can change the direction of the body by making it to shorten from anterior to the posterior pole.
d. None of these
Answer- Flagellum whipping backwards moving the organism forward, and when moves forward the organism moves backward.
Que- Which of the following bones bones are present in the plam of hand?
a. Carpals
b. Metacarpals
c. Phalanges
d. Metatarsals
Answer- Metacarpals
Que- Which of the following animal uses Setae and Muscles for their Iocomotion?
a. Cockroach
b. Snail
c. Earthworm
d. Star fish
Answer- Earthworm
Que- How many vertebrae are present in vertebral column of man?
a. 33 vertebrae
b. 33 pairs of vertebrae
c. 25 vertebrae
d. 31 vertebrae
Answer- 33 vertebrae
Que- Which of the following vertebrates have a fish-like body?
a. Reptiles
b. Aves
c. Amphibians
d. Mammals.
Answer- Amphibians
Que- How many vertebrae are present in coccyx?
a. 7.0
b. 12.0
c. 9.0
d. 4.0
Answer- 7.0
Que- Which of the following pairs of fins in a fish body are paired?
a. Dorsal and ventral.
b. Pectoral and Pelvic.
c. Tail and anal
d. All of these
Answer- Pectoral and Pelvic.
Que- How many vertebrae are present in thoracic region?
a. 7.0
b. 12.0
c. 5.0
d. 4.0
Answer- 12.0
Que- Among the following organisms which shows the best adaptations for locomotion?
a. Amoeba.
b. Earthworm.
c. Reptiles
d. Amphibians.
Answer- Reptiles
Que- How many vertebrae are in sacrum?
a. 7.0
b. 12.0
c. 5.0
d. 4.0
Answer- 5.0
Que- Which of the following is the swiftest form of the locomotion?
a. Plantigrade
b. Digitigrade
c. Unguligrade
d. Hopping
Answer- Unguligrade
Que- S-band locomotion is characteristically seen in___________?
a. Bony fish
b. Cartilaginous fish.
c. Fish like mammals.
d. All fishes.
Answer- Cartilaginous fish.
Que- How many vertebrae are present in lumbar region?
a. 7.0
b. 12.0
c. 5.0
d. 4.0
Answer- 5.0
Que- Which of the following bones are present in pectoral girdle?
a. Clavicle
b. Scapula
c. Both of these
d. None of these
Answer- Both of these
Que- There are __________ types of nutrients needed by plants besides light to carry out photosynthesis
a. Two
b. Three
c. Four
d. Five
Answer- Three
Que- The site/s where most of the uptake of water and minerals take place is/are__________?
a. Root hairs
b. Root cells
c. Underground stem
d. All of these
Answer- Root hairs
Que- The uptake of water in plants involves__________?
a. Active transport
b. Passive transport
c. Both of these
d. None of these
Answer- Passive transport
Que- The membrane of vacuoles is known as__________?
a. Vacuoloplast
b. Tonoplast
c. Tanoplast
d. All of these
Answer- Tonoplast
Que- The diffusion of ions along with water also takes place by mass flow system along the ________ path?
a. Tonoplast
b. Apoplast
c. Symplast
d. Vacuolar
Answer- Apoplast
Que- Active transport is dependent on____________?
a. Photosynthesis
b. Respiration
c. Photophosporylation
d. None of these
Answer- Respiration
Que- In plants, the neighbouring cells are connected with one another by__________?
a. Plasmodesmata
b. Cell walls
c. Vacuoles
d. Both 'A' & 'B'
Answer- Both 'A' & 'B'
Que- In the root cells _______ pathway becomes discontinuous in the endodermis due to the presence of casparian strip.
a. Tonoplast
b. Apoplast
c. Symplast
d. Vacuolar.
Answer- Apoplast
Que- Cytoplasmic strands that extend through pores in adjacent cell walls are known as___________?
a. Pseudopods
b. Symplasts
c. Plasmodesmata
d. Pili
Answer- Plasmodesmata
Que- In plants, water potential is determined by major factors?
a. Three
b. Four
c. Two
d. Five
Answer- Two
Que- The pressure generated when water enters & inflates plant cells is called ___________ potential?
a. Water
b. Osmotic
c. Pressure
d. Solute
Answer- Pressure
Que- The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)
a. Deffusion
b. Osmosis
c. Active transport
d. None of these
Answer- Osmosis
Que- ___________ potential is the measure of the change in water potential of a system due to the presence of solute molecules?
a. Osmotic
b. Pressure
c. Both of these
d. None of these
Answer- Osmotic
Que- ___________ component of cell wall has grreat affinity with water?
a. Lignin
b. Cellulose
c. Pectin
d. All of these
Answer- All of these
Que- Commonly in other plants than tall ones the speed of upward movement of water is____________?
a. 8mh-1
b. 1 mh-1
c. 7 mh-1
d. 4 mh-1
Answer- 1 mh-1
Que- Exceptionally the positive hydrostatic pressure generated by root pressure is about___________?
a. 600 Kpa
b. 800 Kpa
c. 1000 Kpa
d. 900 Kpa
Answer- 800 Kpa
Que- Cuticular transpiration is _________ of total transpiration?
a. 6-8%
b. 5-7%
c. 7-9%
d. 4-6%
Answer- 5-7%
Que- All plants do not possess___________?
a. Lenticels
b. Cuticle
c. Stomata
d. All of these
Answer- Lenticels
Que- Lenticular transpiration is ___________ of total transpiration?
a. 2-3%
b. 1-3%
c. 1-4%
d. 1-2%
Answer- 1-2%
Que- Introduction of vaccine within the body to produce immunity is an example of____________?
a. Artificially induced active immunity
b. Naturally induced active immunity
c. Artificially induced passive immunity
d. Naturally induced passive immunity
Answer- Artificially induced active immunity
Que- The flow of lymph is maintained by__________?
a. Movement of viscera
b. Breathing movements
c. Valves
d. All of these
Answer- All of these
Que- It is the discharge of blood from blood vessels?
a. Myocardial infarction
b. Cerebral infarction
c. Cerebral Hemorrhage
d. Thromboembolism
Answer- Cerebral Hemorrhage
Que- All of the follwing are blood clots except:___________?
a. Thrombus
b. Embolus
c. Atheroma
d. Hematoma
Answer- Atheroma
Que- It is the measure of force with which blood pushes up against the walls of blood vessels.
a. Stroke volume
b. Cardiac output
c. Blood pressure
d. Blood flow
Answer- Blood pressure
Que- Which of the following have thickest walls?
a. Arteries
b. Veins
c. Capillaries
d. None of these
Answer- Arteries
Que- QRS complex represents____________?
a. Atrial systole
b. Ventricular systole
c. Atrial diastole
d. Ventricular diastole
Answer- Ventricular systole
Que- Tricuspid valve is present_____________?
a. Between right atrium and right ventricle
b. Between left atrium and left ventricle
c. At base of pulmonary artery
d. At base of aorta
Answer- Between right atrium and right ventricle
Que- Cooley's anemia is another name used for___________?
a. Leucemia
b. Thalassaemia
c. Sickle cell anemia
d. None of these
Answer- Thalassaemia
Que- Which of the following are proteins in nature?
a. Antibodies.
b. Interferons
c. Antitoxins
d. All of these
Answer- All of these
Que- Aerating openings formed in the bark through which exchange of gases takes place and water is lost in the form of vapours are___________?
a. Hydathods
b. Stomata
c. Lenticels
d. None of these
Answer- Lenticels
Que- Lenticels look like__________?
a. A big pore
b. Stoma
c. Sponge
d. Cars or small protusions
Answer- Cars or small protusions
Que- Transport of minerals from soil to epidermal cells of roots via carrier protein molcules along their concentration gradient is called___________?
a. Diffusion.
b. Facilitated diffusion.
c. Passive transport.
d. Active transport.
Answer- Facilitated diffusion.
Que- Pulling upward of water and dissolved minerals towards the leaves through the xylem tissue is called__________?
a. Transpiration pull
b. Root pressure
c. Ascent of sap.
d. All of these
Answer- Transpiration pull
Que- A pressure created by active secretion of salts and other solutes from other cells into xylem sap is called___________?
a. Transpiration pull
b. Root pressure
c. Osmotic pressure.
d. None of these
Answer- Root pressure
Que- Stomatal transpiration is __________ of total transpiration
a. 0.9
b. 0.91
c. 0.93
d. 0.95
Answer- 0.9
Que- ___________ function as multisensory hydraulic valve?
a. Lenticels
b. Guard cells
c. Hydathods
d. All of these
Answer- Guard cells
Que- _________ give rise to macrophages, which destroy larger particles by phagocytosis.
a. Nautrophils
b. Basophila
c. Monocyte
d. Lymphocyte
Answer- Monocyte
Que- 95% of the cytoplasm of red blood cells is the___________?
a. Antibodies
b. Hemoglobin
c. Enzymes
d. Proteins
Answer- Hemoglobin
Que- Open circulatory system can contain_________?
a. Red Blood Cells
b. White Blood Cells
c. Haemoglobin
d. All of these
Answer- White Blood Cells
Que- Pressure flow theory was proposed by_________?
a. H-Van Mohl
b. Dixon
c. Vander wall.
d. Earnst Munch
Answer- Earnst Munch
Que- The opening and closing of stomata is directly controlled by the___________?
a. Temperature
b. pH
c. Light
d. None of these
Answer- Light
Que- There are _________ hypothesis which may explain opening and closing of stomata?
a. One
b. Two
c. Three
d. Four
Answer- Two
Que- Low level of CO2 favours _________ of the stomata.
a. Opening
b. Closure
c. Both of these
d. None of these
Answer- Opening
Que- Symbionts which help plants in uptake of phosphorous and trace metals such as zinc and copper.
a. Bacteria
b. Viruses
c. Fungi
d. Cyanobacteria
Answer- Fungi
Que- Addition of salts and other solutes from other cells into xylem sap, __________ the water potential of the xylem sap
a. Increases.
b. Lowers.
c. Doesn't effect.
d. Maintains.
Answer- Lowers.
Que- Single circuit heart is found in_________?
a. Fishes
b. Amphibians
c. Reptiles
d. Mammals
Answer- Fishes
Que- Stomata open due to _________ of K+ into the guard cells from the surrounding epidermis
a. Diffusion
b. Active transport
c. Osmosis
d. All of these
Answer- Active transport
Que- Which of the following is true about hearts of earthworm?
a. There are 5-7 pairs of heart.
b. They are present between 1-7th segments.
c. They are present lateral to the oesophagus.
d. They pump blood from ventral to dorsal vessel.
Answer- They are present lateral to the oesophagus.
Que- It has been estimated that in a normal person plasma constitutes about ________ by volume of blood.
a. 0.35
b. 0.45
c. 0.55
d. 0.75
Answer- 0.55
Que- Brown fat present in certain mammals is specialized in___________?
a. Providing insulation in cold environment.
b. Providing insulation in hot environment
c. Rapid heat production.
d. Controlling heat production.
Answer- Rapid heat production.
Que- Panting is a representative of which mechanism?
a. Pigmentation.
b. Respiration.
c. Evaporative cooling.
d. Excretion.
Answer- Evaporative cooling.
Que- Formation of heat shock proteins in plants results in___________?
a. Elevation of temperature in cold conditions.
b. Embracing the enzymes and other proteins and prevent their denaturation.
c. Change the chemical nature of other proteins thus making them heat resistant.
d. Help in evaporative cooling.
Answer- Embracing the enzymes and other proteins and prevent their denaturation.
Que- Fishes, most of the invertebrates and amphibians are examples of ________ animals?
a. Endotherms
b. Ectotherms
c. Heterotherms
d. Homeotherms
Answer- Ectotherms
Que- The mechanism of regulation, generally between organism and its environment, of solutes and the gain and the loss of water is called________?
a. Homeostasis
b. Hemostasis
c. Osmoregualtion
d. Thermoregulation
Answer- Osmoregualtion
Que- Which of the following represents osmoregulatory steps taken by hydrophytes?
a. Increases transpiration by increasing the surface area of the leave.
b. Small and thick leaves to decrease the surface area proportional to the volume of the leave.
c. Stomata closing in sufficient supply, and opening in restricted supply of water.
d. None of these
Answer- Increases transpiration by increasing the surface area of the leave.
Que- Most of the marine invertebrates are__________?
a. Osmoconformers
b. Osmoregulators
c. Both depend upon the concentration of sea water
d. None of these
Answer- Osmoconformers
Que- Which of the following marine fishes are considered direct descendents of fresh water ancestors?
a. Hagfish
b. Jelly Fish
c. Star Fish
d. Bony fishes
Answer- Bony fishes
Que- Which excretory product in produced in plants during autotrophic mode of life?
a. CO2
b. H2O
c. O2
d. Both A and B
Answer- O2
Que- Which of the following statement about conifers is correct?
a. Stored excretory products in vacuoles, at a concentration that leads to crystal formation.
b. Accumulate waste in leaves, which fall in autumn.
c. Production of black wood in the center.
d. Excrete some of the waste materials directly into soil, occasionally using them as a chemical weapon against other competing plants.
Answer- Excrete some of the waste materials directly into soil, occasionally using them as a chemical weapon against other competing plants.
Que- Purine and pyrimidine metabolism results in production of____________?
a. Creatinine
b. Trimethyamine oxide
c. Xanthine
d. None of these
Answer- Xanthine