MCQOPTIONS
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MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1551. |
Increase and decrease in a population in one of the places in USA, because of sandy cyclone is |
| A. | S. Shaped |
| B. | J. Shaped |
| C. | irrupative |
| D. | None of these |
| Answer» C. irrupative | |
| 1552. |
If at “t” time population density is N, then what is the equation for the population density at (t+1) time ? |
| A. | N (t+1) = Nt - [CD+E] - [B+I)] |
| B. | N (t+1) = Nt+B+I-D-E |
| C. | N (t+1) = Nt+(B+I)-(D+ E)] |
| D. | All of these |
| Answer» E. | |
| 1553. |
What is true for marine animals ? |
| A. | Because of exosmosis they drink sea water |
| B. | As they drink sea water exosmosis occurs |
| C. | Because of exosmosis body fluid become hypotonic, so they drink sea water |
| D. | None of these |
| Answer» B. As they drink sea water exosmosis occurs | |
| 1554. |
Hygroscopic skin is seen in..... |
| A. | Kangaroo rat |
| B. | Uromatrix |
| C. | Spiny tailed lizard |
| D. | Camel |
| Answer» D. Camel | |
| 1555. |
Which is appropriate option if we take ‘T’ for correct statement and’F’ for wrong statement ? |
| A. | TFTTF |
| B. | TFFFF |
| C. | FFFTF |
| D. | TFTFF |
| Answer» C. FFFTF | |
| 1556. |
Which of the following is filled with perilymph ? |
| A. | Area around chochelar ducton outer side |
| B. | In lumen of vestibule |
| C. | In semicircular canal |
| D. | In lumen of sacculus |
| Answer» B. In lumen of vestibule | |
| 1557. |
Write appropriate option for antibiosis |
| A. | Penicillium fungi and certan gram +ve bacteria |
| B. | Penicillium fungi and certan gram -ve bacteria |
| C. | Spirocheate and fermicutes |
| D. | None of these |
| Answer» B. Penicillium fungi and certan gram -ve bacteria | |
| 1558. |
Which of the following option indicates correct chronology of middle ear ossicle (from Thympanum to interal ear) |
| A. | Incus - malleus - stape |
| B. | malleus - Incus - stapes |
| C. | stapes - malleus - Incus |
| D. | malleus - stapes - Incus |
| Answer» C. stapes - malleus - Incus | |
| 1559. |
If marine fish is kept in fresh water, will it survive |
| A. | Yes, If chlorine cells are placed in its kidney |
| B. | Yes, If chlorine cells are placed in its green gland |
| C. | No, Because it can not adapt |
| D. | No, they can not survive but of yongones hatching out of their eggs can survive |
| Answer» D. No, they can not survive but of yongones hatching out of their eggs can survive | |
| 1560. |
At which of the following Structure Sensitivity of retina is highest? |
| A. | Rod cells of Fovea centrali |
| B. | Yellows spot |
| C. | Blind Spot |
| D. | None of the given |
| Answer» C. Blind Spot | |
| 1561. |
Which of the following disorder is not hereditary (J.K.C.M.E.E 2005) |
| A. | sickle cell anaemia |
| B. | haemophilia |
| C. | colour blindness |
| D. | cataract |
| Answer» E. | |
| 1562. |
Space between piamater and arachnoid is (J.K.C.M.E.E 2003) |
| A. | subdural |
| B. | supra archnoi |
| C. | eqidural |
| D. | subarachnoid |
| Answer» E. | |
| 1563. |
Peremability of which of the following increases during depolarization ? |
| A. | Na+ |
| B. | K+ |
| C. | Mg+ |
| D. | Ag+ |
| Answer» B. K+ | |
| 1564. |
What is macula lutea ? |
| A. | A yellow pigmented area with cone cell |
| B. | fovea centralis of retina, with conecells |
| C. | A yellow pigmented area of Choroid with rod cell |
| D. | Blind spot on retina |
| Answer» C. A yellow pigmented area of Choroid with rod cell | |
| 1565. |
Which type of muscle are present in ciliary body ? |
| A. | Radial & oblique |
| B. | Horizontal & oblique |
| C. | Radial and longitudanal |
| D. | All of the given |
| Answer» B. Horizontal & oblique | |
| 1566. |
Which one is mixed nerve |
| A. | oculomotor |
| B. | trochler |
| C. | hypoglossal |
| D. | glossopharyngeal |
| Answer» E. | |
| 1567. |
Which of the following cranial nerves are mixed: (BHU 2007) 1. glossopharyngeal 2. trigeminal 3. vagus 4. auditory |
| A. | 1,2 and 3 are correct |
| B. | 1 and 3 are correct |
| C. | 1 and 2 are correct |
| D. | 2 and 4 are correct |
| Answer» B. 1 and 3 are correct | |
| 1568. |
To What the resparatory centres of brain are sensitive? |
| A. | High CO2 Conc in blood |
| B. | Blood suppliy to brain |
| C. | High O2 Conc in blood |
| D. | More blood supply to lungs |
| Answer» B. Blood suppliy to brain | |
| 1569. |
What is ciliary body ? |
| A. | Thick posterior part choroid |
| B. | Thick anterior part of sclera |
| C. | Thick posterior part of sclera |
| D. | Thick anterior part of choroid |
| Answer» E. | |
| 1570. |
Which of the following of are main divisions of autonomous nervous system |
| A. | limbic system and Hippocampu |
| B. | Sympathetic and limbic system |
| C. | Sympathetic and para sympathetic |
| D. | Brain and spinal cord |
| Answer» D. Brain and spinal cord | |
| 1571. |
Several statements are given here in reference to cone cells which of the following option indicates all correct statements for cone cells ? Statements |
| A. | (iii), (ii) and (i) |
| B. | (ii) and (iii) (iv) |
| C. | (iii) and (iv) |
| D. | (i) and (ii) (iv) |
| Answer» B. (ii) and (iii) (iv) | |
| 1572. |
It is correct for the function of ear ossicle |
| A. | To amplify sound 40 time |
| B. | To amplify sound 20 times |
| C. | To amplify sound 10 times |
| D. | To reduce harmful effect of sound |
| Answer» C. To amplify sound 10 times | |
| 1573. |
which of the folliwing has nerve centers for the urge of eating ? |
| A. | Pon |
| B. | Thalamus |
| C. | Hypothalamus |
| D. | mid - brain |
| Answer» D. mid - brain | |
| 1574. |
which basic Colour Photoreceptors are Present in human eye ? |
| A. | Red Yellow Orange |
| B. | Red green blue |
| C. | Red green Orange |
| D. | green yellow blue |
| Answer» C. Red green Orange | |
| 1575. |
Nasal epithelium is formed of : (C.M.C 2003) |
| A. | columnar epithelium |
| B. | keratinised epithelium |
| C. | pseudostratified epithelium |
| D. | glandular epithelium |
| Answer» E. | |
| 1576. |
Glands responsible for secreting tears are: (H.P.P.M.T 2005) |
| A. | glands of moll |
| B. | lacrimal glands |
| C. | meibomian glands |
| D. | glands of zeis |
| Answer» C. meibomian glands | |
| 1577. |
Which of the following option shows correctly matched groups for the column I, column II and |
| A. | (a - i - g), (b - ii- f), (c - i e) |
| B. | (a - ii - f), ( b - iii - g), (c - i -e) |
| C. | ( a - iii - e), ( b - ii - f), (c - i - g) |
| D. | (a - iii- f), (b - ii- e), ( c - i- g) |
| Answer» C. ( a - iii - e), ( b - ii - f), (c - i - g) | |
| 1578. |
Few statements about tympanic membrane are given here which of the following option shows all correct statement for it ? |
| A. | (i) |
| B. | (i) and (ii) |
| C. | (ii) and (iii) |
| D. | (i), (iv), (iii) |
| Answer» B. (i) and (ii) | |
| 1579. |
Iris is a continuation of _______ |
| A. | ciliarybody |
| B. | choroid |
| C. | Retina |
| D. | None of the given |
| Answer» B. choroid | |
| 1580. |
Which of the following option indicates correct chronology of structures of the ear (from outside is inside ) ? |
| A. | cochlearduct - utricule - sacule |
| B. | Saccule - urticule - cochlearduct |
| C. | utricule - saccule - cochlearduct |
| D. | Utricular - cochlearduct - saccule |
| Answer» D. Utricular - cochlearduct - saccule | |
| 1581. |
Deficiency abnormality of which of the following is responsible for Alzheimer's dlsease? |
| A. | cortisone |
| B. | Acetyl choline |
| C. | Adrenaline |
| D. | nor - eninephrin |
| Answer» C. Adrenaline | |
| 1582. |
Calvin cycle represents one of the following phenomenon. |
| A. | oxidative carboxylation |
| B. | dark phosphorylation |
| C. | dark respiration |
| D. | reductive carboxylation |
| Answer» E. | |
| 1583. |
The number of photons required to release one mole of O2 in photosynthesis called. |
| A. | quantum yield |
| B. | quantum requirement |
| C. | red drop |
| D. | Emerson’s effect |
| Answer» C. red drop | |
| 1584. |
What is correct for the “ number ” of vagus Cranial nerve? |
| A. | 6 |
| B. | 5 |
| C. | 10 |
| D. | 12 |
| Answer» D. 12 | |
| 1585. |
In sugarcane plant CO2 is fixed in malic acid, in which the enzyme that fixes CO2 is |
| A. | ribulose biphosphate carboxylase |
| B. | phosphoenol pyruvic acid carboxylase |
| C. | ribolose phosphate kinase |
| D. | fructose phosphatase |
| Answer» C. ribolose phosphate kinase | |
| 1586. |
Match Column – I with given under Column – II ; choose the answer which gives correct combination: |
| A. | P = (i), Q = (ii), R = (iii), S = (iv) |
| B. | P = (iii), Q = (i), R = (iv), S = (iii) |
| C. | P = (iii), Q = (ii), R = (iii), S= (i) |
| D. | P = (i), Q = (ii), R = (iv), S = (iii) |
| Answer» C. P = (iii), Q = (ii), R = (iii), S= (i) | |
| 1587. |
Which of the following plant is efficient converter of solar energy whose net productivity 2-4 kg/m2/yr or even higher. |
| A. | Wheat |
| B. | rice |
| C. | sugarcane |
| D. | bajra |
| Answer» D. bajra | |
| 1588. |
How many electrons are involved for the formation of 1 mole of glucose and 6O2 molecules ? |
| A. | 6 |
| B. | 12 |
| C. | 18 |
| D. | 24 |
| Answer» C. 18 | |
| 1589. |
A plant with low CO2 compensation point is |
| A. | Atriplex patula |
| B. | Leucopoa kingii |
| C. | Gossypium hisrsutum |
| D. | Tidestromia oblingifolia |
| Answer» B. Leucopoa kingii | |
| 1590. |
A. The atmospheric concentration of CO2 at which photosynthesis just compensation point.R. The CO2 compensation point is reached when the amount of CO2 uptake is less than that generated through respiration because the level of CO2 in the atmosphere is more than that required for achieving CO2 compensation point. |
| A. | If A is correct and R is its explanation |
| B. | If A is correct but R is not its explanation |
| C. | If A is correct but R is wrong |
| D. | If both A and R are correct |
| Answer» D. If both A and R are correct | |
| 1591. |
Rubisco is an enzyme for |
| A. | CO2 fixation in dark reaction |
| B. | photorespiration |
| C. | regeneration of RuBP |
| D. | photolysis of water |
| Answer» C. regeneration of RuBP | |
| 1592. |
Which one of the following is wrong in relation to photorespiration ? It |
| A. | occurs in chloroplast |
| B. | occurs in daytime only |
| C. | is a characteristic of C4 plants |
| D. | is a characteristic of C3 plants |
| Answer» D. is a characteristic of C3 plants | |
| 1593. |
A. Six turns of Calvin-cycle result in the production of one molecule of glucose (C6H12O6) R. Three molecules of ribulose 1, 5 – bisphosphate (Ru BP) react with three molecules of carbon dioxide to produce six carbon intermediates. |
| A. | A is correct and R is its explanation |
| B. | A is correct but R is not its explanation |
| C. | A is correct but R is wrong |
| D. | Both A and R are wrong |
| Answer» D. Both A and R are wrong | |
| 1594. |
Plants are removed from patients room at night because |
| A. | they produce CO2 at night in more concentration |
| B. | they produce CO2 all the time but release O2 also in day time |
| C. | they consume O2 at night. |
| D. | they do not photosynthesize at night, therefore fail to deplete CO2 of the room, hence their presence will increase CO2 |
| Answer» C. they consume O2 at night. | |
| 1595. |
Match the names of scientists given under Column – I with their important contributions given under |
| A. | P = (iv) Q = (i) R = (iii) S = (ii) |
| B. | P = (i) Q = (iv) R = (ii) S = (iii) |
| C. | P = (ii) Q = (i) R = (iii) S = (iv) |
| D. | P = (iv) Q = (iii) R = (ii) S = (i) |
| Answer» B. P = (i) Q = (iv) R = (ii) S = (iii) | |
| 1596. |
Chlorophyll a is absent in which of the following photosynthesising organisms ? |
| A. | Bacteria |
| B. | Cyanobacteria |
| C. | Red algae |
| D. | Brown algae |
| Answer» B. Cyanobacteria | |
| 1597. |
In C4 plants showing Kranz anatomy which of the following is correct ? |
| A. | Bundle sheath cells without grana and mesophyll cells with grana |
| B. | bundle sheath cells with grana mesophyll cells without grana |
| C. | both are without grana |
| D. | both are with grana |
| Answer» B. bundle sheath cells with grana mesophyll cells without grana | |
| 1598. |
The basic feature of typical C4 plants showing ‘Kranz’ anatomy is |
| A. | the presence of chloroplasts in mesophyll and epidermal cells |
| B. | the presence of chloroplasts in bundle sheath cells |
| C. | the presence of rudimentary chloroplasts in bundle sheath cells and typical chloroplasts with well-formed grana in mesophyll cells |
| D. | the presence of typical chloroplasts with well-formed grana in bundle sheath cells and rudimentary chloroplasts in the mesophyll cells |
| Answer» D. the presence of typical chloroplasts with well-formed grana in bundle sheath cells and rudimentary chloroplasts in the mesophyll cells | |
| 1599. |
Maximum photosynthesis occurs in which of these lights ? |
| A. | Red |
| B. | Green |
| C. | Very high light |
| D. | Continuous bright light |
| Answer» B. Green | |
| 1600. |
Which of the following is correct for chlorophyll of cyanobacteria ? |
| A. | Chl a = C55H70O6N4 Mg |
| B. | Chl a = C55H72O5N4 Mg |
| C. | Chl b = C55H72O6N4 Mg |
| D. | Xanthophyll = C40H56 |
| Answer» C. Chl b = C55H72O6N4 Mg | |