MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 601. |
Which of the following statements are incorrect options. (i) Primary growth involves increase in girth of plants. (ii) Increase in girth of plants occurs due to apical meristem. (iii) Secondary growth of plants occurs due to lateral meristem. (iv) Vascular cambium and cork cambium are the lateral meristems of plants. (v) Elongation of a plant along the axis is called primary growth. |
| A. | (i) and (ii) |
| B. | (iii) and (iv) |
| C. | (iv) and (v) |
| D. | (i) and (v) |
| Answer» B. (iii) and (iv) | |
| 602. |
The matrix of hyaline cartilage contains [CPMT 1998] |
| A. | Collagen |
| B. | Chondrin |
| C. | Ossein |
| D. | All of these |
| Answer» C. Ossein | |
| 603. |
A normal woman whose father was colourblind marries a normal man. What kinds of children would be expected and in what proportion [MP PMT 1997] |
| A. | Daughters normal, 50% of sons colourblind |
| B. | Daughters normal, all sons colourblind |
| C. | 50% of daughters colourblind, all sons normal |
| D. | All daughters colourblind, sons normal |
| Answer» B. Daughters normal, all sons colourblind | |
| 604. |
Hydrophytes can float on water due to the presence of large number of [CPMT 1985] |
| A. | Aerenchyma |
| B. | Parenchyma |
| C. | Chlorenchyma |
| D. | Sclerenchyma |
| Answer» B. Parenchyma | |
| 605. |
Histogens are component of or The histogens are differentiated in [JIPMER 1985; RPMT 1991] |
| A. | Apical meristem |
| B. | Intercalary meristem |
| C. | Lateral meristem |
| D. | Secondary meristem |
| Answer» B. Intercalary meristem | |
| 606. |
Prolonged deficiency of Vitamin Bi in human diet may lead to: (DPMT 2006; Har. PMT 2006) |
| A. | scurvy |
| B. | pellagra |
| C. | beri-beri |
| D. | cheilosis |
| Answer» D. cheilosis | |
| 607. |
Vitamin \[{{B}_{12}}\] is available to ruminants by: (DPMT 2006; Har. PMT 2006) |
| A. | plants |
| B. | animals |
| C. | microorganisms in caecum |
| D. | all of the above |
| Answer» D. all of the above | |
| 608. |
Tissue composed of non-parenchymatous cells and have isodiametric or irregular shape is called |
| A. | Sclereids |
| B. | Sclerenchyma fibers |
| C. | Sieve tubes |
| D. | None of the above |
| Answer» B. Sclerenchyma fibers | |
| 609. |
The xylem fibres are classified into |
| A. | Protoxylem and metaxylem |
| B. | Primary and secondary fibres |
| C. | Fibre tracheids and fibres |
| D. | Long and short fibres |
| Answer» D. Long and short fibres | |
| 610. |
Which of the following is less general incharacters as compared to genus? |
| A. | Species |
| B. | Division |
| C. | Class |
| D. | Family |
| Answer» B. Division | |
| 611. |
Which one of the following is the cause of yellow fever [AMU 1990] |
| A. | Virus |
| B. | Bacteria |
| C. | Protozoa |
| D. | None of these |
| Answer» B. Bacteria | |
| 612. |
Read the assertion and reason carefully: Assertion : Ginger has a prostrate-growing rhizome. Reason : Shoot growth is not effected by gravity. AIIMS 2004] |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 613. |
Which of the following part of the Funaria, sporophyte is involved in the dispersal of spores? |
| A. | Calyptra |
| B. | Peristome |
| C. | Operculum |
| D. | Annulus |
| Answer» C. Operculum | |
| 614. |
Antibody is produced by [BHU 2003; AIEEE 2003] |
| A. | B-Lymphocyte |
| B. | Heparin |
| C. | T-Lymphocyte |
| D. | Both [a] and [b] |
| Answer» B. Heparin | |
| 615. |
Assertion : Cycas has two types of root-tap root system and coralloid roots. Reason : Coralloid root contains Anabaena. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 616. |
The breeds of sheep which give good quality wool are |
| A. | Lohi and Nellore |
| B. | Rampur and Deccini |
| C. | Nellore and Deccini |
| D. | Nali and Lohi |
| Answer» E. | |
| 617. |
Which of the following statement(s) is/are correct regarding excretory system of cockroach? (i) Excretion is performed by malphigian tubules. (ii) They absorb nitrogenous waste products and convert them into uric acid which is excreted out through hindgut. Hence, this insect called ammonetelic. (iii) In addition, fat body, nephrocytes and uricose glands also help in excretion. |
| A. | Only (i) |
| B. | Both (ii) and (iii) |
| C. | Both (i) and (iii) |
| D. | All of the above |
| Answer» D. All of the above | |
| 618. |
Match the terms of column-I with the appropriate terms of column-II. Column-I Column-II A. \[{{K}^{+}}\]pump theory I. Semi-permeable membrane B. Plasmolysis II. Hydathodes C. Imbibition III. Stomatal movement D. Guttation IV. Exosmosis E. Osmosis V. Hydrophilic colloids |
| A. | A- III; B - IV; C - V; D - II; E -1 |
| B. | A-I; B-II; C-III; D-IV; E-V |
| C. | A-II; B-III; C-V; D-I; E-IV |
| D. | A-IV; B-V; C-II; D-III; E-I |
| Answer» B. A-I; B-II; C-III; D-IV; E-V | |
| 619. |
Read the assertion and reason carefully: Assertion : The embryo which is capable to germinate should have well-developed radicle plumule and one or two cotyledons. Reason : In the Orobanchaceae and Orchidaceae the embryo never differentiates a true radicle, plumule and cotyledons, but can germinate. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 620. |
Bacteriophage is made up of [DPMT 1983; CPMT 1971, 79, 84, 94; MP PMT 1989; Pb. PMT 2000] |
| A. | Carbon and nitrogen |
| B. | DNA |
| C. | Nucleoprotein (Nucleic acid + protein) |
| D. | Protein only |
| Answer» D. Protein only | |
| 621. |
Appearance of hidden character in some progeny of \[{{F}_{2}}\] population indicates: |
| A. | Law of purity of gametes |
| B. | Law of independent assortment |
| C. | Law of dominance |
| D. | None of the above |
| Answer» B. Law of independent assortment | |
| 622. |
Punnett square is used to know: |
| A. | outcome of a cross |
| B. | probable result of a cross |
| C. | types of gametes |
| D. | result of meiosis |
| Answer» C. types of gametes | |
| 623. |
Hard lignified thick walled long and pointed cells a plant are [MP PMT 1999] |
| A. | Parenchyma |
| B. | Sclerenchyma |
| C. | Colenchyma |
| D. | Sclereids |
| Answer» C. Colenchyma | |
| 624. |
Filaments of Spirogyra are |
| A. | Uniseriate and unbranched |
| B. | Uniseriate and branched |
| C. | Multiseriate and unbranched |
| D. | Multiseriate and branched |
| Answer» B. Uniseriate and branched | |
| 625. |
The bacterial disease which is found in chickens is? |
| A. | Rickets |
| B. | Ranikhet |
| C. | Coccidiosis |
| D. | Fowl cholera |
| Answer» E. | |
| 626. |
Which is not a variety of sheep? |
| A. | Lohi |
| B. | Beetal |
| C. | Nellore |
| D. | Rampuri |
| Answer» C. Nellore | |
| 627. |
Which type of tissue is immediately produced from a meristem |
| A. | Parenchyma |
| B. | Xylem |
| C. | Phloem fibre |
| D. | Tracheid |
| Answer» B. Xylem | |
| 628. |
Analyse the figure and choose the correct statement regarding this. |
| A. | Kinetic energy (K.E.) of \[{{H}_{2}}O\] in A solution > K.E. of water in B solution. |
| B. | K.E. of water in B solution > K.E. of water in A solution. |
| C. | K.E. of water in A solution = K.E. of \[{{H}_{2}}O\] in B solution. |
| D. | Water potential has nothing to do with K.E. of water in a solution. |
| Answer» B. K.E. of water in B solution > K.E. of water in A solution. | |
| 629. |
Potato tuber is modified /Edible part of potato is [CPMT 1978, 83; JIPMER 1988; Haryana PMT 2005] |
| A. | Stem |
| B. | Bulb |
| C. | Stolon |
| D. | Root |
| Answer» B. Bulb | |
| 630. |
Match the column-I with column-II and choose the correct option. Column-I Column-II A. Formative I. Plastic extension through the enzymatic loosening of microfibrils B. Phase of enlargement II. Cell develops into special or particular type of cells. C. Phase of differentiation III. New cells are produced by mitosis |
| A. | A-I; B-II; C-III |
| B. | A-I; B-III; C-II |
| C. | A-III; B-II; C-I |
| D. | A-III; B-I; C-II |
| Answer» E. | |
| 631. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Sometimes nonsmokers are prone to lung cancer. Reason : Nonsmokers are also called passive smokers. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| E. | If assertion is false but reason is true. |
| Answer» C. If assertion is true but reason is false. | |
| 632. |
Banana bunchy top is caused by [BHU 1989] |
| A. | Mycoplasma |
| B. | Deutromycetes |
| C. | Xanthomonas |
| D. | Virus |
| Answer» E. | |
| 633. |
Dahlia mosaic virus has |
| A. | DNA |
| B. | RNA |
| C. | DNA and RNA both |
| D. | None of these |
| Answer» B. RNA | |
| 634. |
Who proposed the phanerogram of virus |
| A. | Lwoff and Tournier |
| B. | W.M. Stanley |
| C. | Weil et al |
| D. | None of these |
| Answer» B. W.M. Stanley | |
| 635. |
Rhizome of Crocus (Saffron) is |
| A. | Rhizome |
| B. | Corm |
| C. | Root |
| D. | Bulb |
| Answer» C. Root | |
| 636. |
In atoms, protons and neutrons are present |
| A. | Outside the nucleus |
| B. | Only in the nucleus |
| C. | In the electron shells |
| D. | Inside and outside nucleus |
| Answer» C. In the electron shells | |
| 637. |
Influenza virus has [CBSE PMT 1996] |
| A. | RNA |
| B. | DNA |
| C. | Neither RNA nor DNA |
| D. | Both DNA and RNA |
| Answer» B. DNA | |
| 638. |
Match column-I with column-II and select the correct answer using the codes given below. Column-I Column-II A. Transpiration I. Uses energy to pump molecules against a concentration gradient. B. Guttation II. Active absorption of water. C. Exudation III. Loss of water vapour from plant parts. D. Active transport IV. Loss of liquid water from leaves. V. Loss of water from parts injured plant. |
| A. | A-I; B-II; C-III; D-V |
| B. | A-II; B-I; C-IV; D-III |
| C. | A-III; B-IV; C-V; D-I |
| D. | A-IV; B-V; C-II; D-III |
| Answer» D. A-IV; B-V; C-II; D-III | |
| 639. |
Saheli' is a new oral contraceptive, developed by: |
| A. | All Indian Institute of Medical Science |
| B. | Central Drug Research Institute |
| C. | Health Care Pvt. Ltd. |
| D. | Bharat Immunologicals & Biologicals Corp. Ltd. |
| Answer» C. Health Care Pvt. Ltd. | |
| 640. |
Profuse, yellowish, greenish frothy smelling discharge from vagina is due to infection of: |
| A. | Treponema pallidum |
| B. | Chlamydia |
| C. | Trichomonas vaginallis |
| D. | Neisseria |
| Answer» D. Neisseria | |
| 641. |
Vascular bundles in the stem of Cucurbita or Lagenaria are [CPMT 1985; MP PMT 1986; AIIMS 1992; KCET 1999; BHU 2001] |
| A. | Collateral |
| B. | Bicollateral |
| C. | Radial |
| D. | Inverted |
| Answer» C. Radial | |
| 642. |
At carrying capacity, a population ___. |
| A. | increases rapidly |
| B. | decreases slowly |
| C. | decreases rapidly |
| D. | fluctuates around a median number |
| Answer» E. | |
| 643. |
When birth rate equals death rate: |
| A. | a population grows rapidly. |
| B. | the size of a population remains constant. |
| C. | density-dependent limiting factors do not affect the population. |
| D. | a population is in danger of extinction. |
| Answer» C. density-dependent limiting factors do not affect the population. | |
| 644. |
CAM-plants avoid photorespiration by: |
| A. | Performing Calvin cycle at night. |
| B. | Fixing \[C{{O}_{2}}\] into organic acid in night and releasing \[C{{O}_{2}}\] in day. |
| C. | Using PEP carboxylate to fix \[C{{O}_{2}}\] to RuDP. |
| D. | Keeping the stomata closed during the day. |
| Answer» C. Using PEP carboxylate to fix \[C{{O}_{2}}\] to RuDP. | |
| 645. |
The length of a plant axis increases by [CPMT 1977, 78, 79, 84, 89] |
| A. | Apical meristem |
| B. | Lateral meristem |
| C. | Dermatogen |
| D. | Pleurome |
| Answer» B. Lateral meristem | |
| 646. |
The site of respiration in bacteria is [DPMT 1991; MP PMT 1995, 98; CBSE PMT 1997; BHU 2003] |
| A. | Episome |
| B. | Mesosome (cytoplasmic membrane) |
| C. | Ribosome |
| D. | Microsome |
| Answer» C. Ribosome | |
| 647. |
The smallest unit of an element that retains all the properties of the element is |
| A. | Atom |
| B. | Molecule |
| C. | Electron |
| D. | Compound |
| Answer» B. Molecule | |
| 648. |
The calyptrogen of the root apex forms [BHU 1991; MP PMT 2003] |
| A. | Rhizoids |
| B. | Root nodule |
| C. | Root hairs |
| D. | Root cap |
| Answer» E. | |
| 649. |
Cotton stenosis is caused by |
| A. | Virus |
| B. | Mycoplasma |
| C. | Bacteria |
| D. | Fungi |
| Answer» B. Mycoplasma | |
| 650. |
Female rarely experience the physiologic defect of haemophilia because they do so only when they are [MP PMT 1990] |
| A. | Heterozygous for the defect |
| B. | Homozygous for the defect |
| C. | Carrier for the defect |
| D. | Wives of haemophilic husbands |
| Answer» C. Carrier for the defect | |