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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.
| 9651. |
Which is correct about energy changes in living cells [AMU 2001] |
| A. | First energy transfer, then energy transformation |
| B. | First energy transformation, then energy transfer |
| C. | Both occur discontinuously |
| D. | Both occur continuously |
| Answer» E. | |
| 9652. |
Choose the correct description depicted by floral diagram [KCET 2002] |
| A. | United valvate sepals, free twisted petals, free stamens, unilocular ovary with marginal placenta |
| B. | United valvate sepale, free imbricate petals, free stamens, unilocular ovary with axile placenta |
| C. | United valvate sepals, free imbricate petals, epipetalous stamens, unilocular ovary with marginal placenta |
| D. | United valvate sepals, free imbricate petals, free stamens, unilocular ovary with marginal placentation |
| Answer» E. | |
| 9653. |
The group that does not fit into this category [MP PMT 1993] |
| A. | Amphibia |
| B. | Reptiles |
| C. | Aves |
| D. | Mammals |
| Answer» B. Reptiles | |
| 9654. |
Match the names of items listed under column I with the items given under column II; choose the answer which gives the correct combination of the alphabets of the two columns Column I Column II A Ketone p has 5 carbon sugar, a phospphate group and a nitrogenous base B Fatty acid q has long chain of carbon and hydrogen atoms and a carboxyl group at one end C Aldehyde r has a carbonyl group at the end of the carbon chain D Nucleotide s has a carbonyl group within the carbon chain |
| A. | A = s, B = q, C = r, D = p |
| B. | A = q, B = r, C = s, D = p |
| C. | A = s, B = r, C =q, D = p |
| D. | A = r, B = q, C = s, D = p |
| Answer» B. A = q, B = r, C = s, D = p | |
| 9655. |
Chief features of family Brassicaceae/Cruciferae is presence of [APMEE 1994; BHU 2002] |
| A. | Latex |
| B. | Pectin |
| C. | Alkaloids |
| D. | Myrosin enzyme |
| Answer» E. | |
| 9656. |
Haemolytic jaundice is caused due to a dominant gene but only 10% of the people actually develop the disease. A heterozygous man marries a homozygous normal woman; what proportion of the children would be expected to develop the haemolytic disease [AIIMS 1982] |
| A. | 44317 |
| B. | 44470 |
| C. | 42005 |
| D. | 43831 |
| Answer» E. | |
| 9657. |
Match the names of biomolecules listed under column I with the characteristics given under column II; choose the answer which gives the correct combination of the alphabets of the two columns Column I (Biomolecule) Column II (Characteristics) A ATP p One or more sugar monomers B DNA gf q The main source of energy C Protein r Two strands of nucleotides D Carbohydrate s Long sequence of amino acids |
| A. | A = s, B = q, C = r, D = p |
| B. | A = q, B = r, C = s, D = p |
| C. | A = s, B = r, C = q, D = p |
| D. | A = r, B = q, C = s, D = p |
| Answer» C. A = s, B = r, C = q, D = p | |
| 9658. |
A monocot showing reticulate venation is [APMEE 1995] |
| A. | Bombusa |
| B. | Smilax |
| C. | Callophyllum |
| D. | Ginkgo |
| Answer» C. Callophyllum | |
| 9659. |
Which of them is in tracheate group [MP PMT 1995] |
| A. | Crab-Centipede-Cockroach |
| B. | King crab-Scorpion-Housefly |
| C. | Spider-Peripatus-Mosquito |
| D. | Bedbug-Sandfly-Silkworm |
| Answer» E. | |
| 9660. |
If a human mother has ?O' blood group, the foetus would die if the blood of foetus is [NCERT 1982] |
| A. | A |
| B. | B |
| C. | AB |
| D. | Would remain unaffected by blood group whether it is A, B or AB |
| Answer» E. | |
| 9661. |
The floral formula for Malvaceae is [RPMT 1991, 97] |
| A. | Å Epi(3?7) K(5) C(5) A(¥) \[\underline{{{G}_{(5)}}}\] |
| B. | Å Epi(3?7) K(5) C5 A5 \[\underline{{{G}_{(5)}}}\] |
| C. | Å Epi(3-7) K(5) C5 A(¥) \[\underline{{{G}_{(5)}}}\] |
| D. | Å Epi(3-7) K(5) C(5) A(¥) \[\underline{{{G}_{(3-\infty )}}}\] |
| Answer» D. Å Epi(3-7) K(5) C(5) A(¥) \[\underline{{{G}_{(3-\infty )}}}\] | |
| 9662. |
A myriapoda has [NCERT 1983] |
| A. | Chitinous exoskeleton, dorsal nerve cord, three body segments and one pair of antennae |
| B. | Chitinous exoskeleton, ventral nerve cord, three body segments and two pair of antennae |
| C. | Soft body, ventral nerve cord, numerous body segments and two pair of antennae |
| D. | Chitinous exoskeleton, ventral nerve cord, numerous body segments and one pair of antennae |
| Answer» E. | |
| 9663. |
A pair of contrasting characters is termed as [AFMC 1984] |
| A. | Allelomorphs |
| B. | Homozygous |
| C. | Heterozygous |
| D. | Polymorphs |
| Answer» B. Homozygous | |
| 9664. |
Which statement is correct for biomolecules [RPMT 2001] |
| A. | DNA is a polymer of ribonucleotides |
| B. | All carbohydrates break down into glucose |
| C. | RNA is single stranded and contain different purine base than DNA |
| D. | Sequence of amino acids determine primary structure of proteins |
| Answer» E. | |
| 9665. |
The condition of stamens in Cruciferae family is correctly expressed as [CPMT 1997] |
| A. | A6 |
| B. | A2+4 |
| C. | A4+2 |
| D. | All of these |
| Answer» C. A4+2 | |
| 9666. |
A person meets with an accident and great loss of blood has occurred. There is no time to analyse his blood group. It is safe to transfer blood of group [AIIMS 1984; Orissa JEE 2005] |
| A. | \[AB,R{{h}^{+}}\] |
| B. | \[AB,R{{h}^{-}}\] |
| C. | \[O,R{{h}^{-}}\] |
| D. | \[O,R{{h}^{+}}\] |
| Answer» D. \[O,R{{h}^{+}}\] | |
| 9667. |
Organic compounds are present in all living cells. They all share the following characteristic |
| A. | Are hydrophobic |
| B. | Are biological catalysts |
| C. | Are used in protein synthesis |
| D. | Are composed of carbon atom backbone surrounded by hydrogen atoms |
| Answer» E. | |
| 9668. |
Which of the following pair is a combination of highest and lowest energy molecules |
| A. | Glucose and pyruvic acid |
| B. | Palmitic acid and acetyl CoA |
| C. | Glucose and maleic acid |
| D. | Maleic acid and acetyl CoA |
| Answer» C. Glucose and maleic acid | |
| 9669. |
The maximum evolution of oxygen is by greatest producers of organic matter [DPMT 1990; CBSE PMT 1989] |
| A. | Great land area |
| B. | Crops |
| C. | Phytoplankton of sea |
| D. | Forests |
| Answer» D. Forests | |
| 9670. |
Rhizobium lives symbiotically with root nodules and fixes atmospheric nitrogen. It gives nitrogenous compound to host and inturn takes food from host. This food taken by bacterium is |
| A. | Fats |
| B. | Proteins |
| C. | Carbohydrates |
| D. | Any of these |
| Answer» D. Any of these | |
| 9671. |
Woodward (1669) observed that plant grew better in muddy water than in rain water because |
| A. | Muddy water had most of essential elements dissolved in it |
| B. | Muddy water had micro nutrients dissolved in it |
| C. | Muddy water had macro nutrients dissolved in it |
| D. | None of these |
| Answer» D. None of these | |
| 9672. |
Which of the following is a correct sequence for the appearance of compounds in a cell |
| A. | Amino acids ® protein ® enzyme |
| B. | Protein ® enzyme ® amino acids |
| C. | Disaccharides ® monosaccharides ® polysaccharides |
| D. | Monosaccharides ® starch ® sucrose |
| Answer» B. Protein ® enzyme ® amino acids | |
| 9673. |
Two type of cells hyaline and green or with various shades are characteristic of bryophytes in [BHU 1986] |
| A. | Funaria hygrometrica |
| B. | Polytrichum commune |
| C. | Sphagnum pappiolossum |
| D. | Porella pelatyphylla |
| Answer» D. Porella pelatyphylla | |
| 9674. |
Fungi can be stained by [AFMC 1993; BVP 2000] |
| A. | Safranine |
| B. | Iodine |
| C. | Lactophenol |
| D. | Cotton blue |
| Answer» E. | |
| 9675. |
Amoeba reacts [CPMT 1987] |
| A. | Negatively to strong light and positively to weak light |
| B. | Positively to strong light and negatively to weak light |
| C. | Unaffected by light intensity |
| D. | Positive to both strong and weak light |
| Answer» B. Positively to strong light and negatively to weak light | |
| 9676. |
Kinocilia are |
| A. | Motile |
| B. | Non-motile |
| C. | Both [a] and [b] according to function |
| D. | None of the above |
| Answer» B. Non-motile | |
| 9677. |
E. coli bacterium possesses a single large circular DNA as its genetic material. This strands codes for |
| A. | 1000 to 2000 different proteins |
| B. | 2000 to 3000 different proteins |
| C. | 3000 to 4000 different proteins |
| D. | More than 4000 different proteins |
| Answer» C. 3000 to 4000 different proteins | |
| 9678. |
From a cross AABb × aaBb, the genotypes AaBB : AaBb : Aabb : aabb will be obtained in the following ratio [BHU 1994] |
| A. | 1 : 1 : 1 : 1 |
| B. | 1 : 2 : 1 : 0 |
| C. | 0 : 3 : 1 : 0 |
| D. | 1 : 1 : 1 : 0 |
| Answer» C. 0 : 3 : 1 : 0 | |
| 9679. |
The process of evolution [DPMT 1985] |
| A. | Is a continuous process |
| B. | Is a discontinuous process |
| C. | Was continuous in beginning but discontinuous now |
| D. | Was discontinuous in beginning but continuous now |
| Answer» B. Is a discontinuous process | |
| 9680. |
Parachute mechanism of fruit dispersal as found in compositae is due to structure named |
| A. | Bract |
| B. | Pappus |
| C. | Coma |
| D. | Barbs |
| Answer» C. Coma | |
| 9681. |
Roundworms differ from flatworms in having a |
| A. | Circulatory system |
| B. | Pseudocoel |
| C. | Dorsal nerve cord |
| D. | Circular muscle layer |
| Answer» C. Dorsal nerve cord | |
| 9682. |
Mixture of oil in water forms an emulsion. If a protein is shaken up with such an emulsion |
| A. | The emulsion gets stabilized |
| B. | Protein molecules settle down |
| C. | Coalescence of oil particles takes place |
| D. | A thin film of protein molecules is formed on the surface |
| Answer» B. Protein molecules settle down | |
| 9683. |
The fruit of Apricot undergoes dispersal by |
| A. | Compensated zoochory |
| B. | By man |
| C. | Forced zoochory |
| D. | By wind |
| Answer» B. By man | |
| 9684. |
The larva of Ascaris undergoes the migration in which of the following course [BHU 1999] |
| A. | Alimentary canal, liver, intestine |
| B. | Alimentary canal, heart, lungs, trachea, intestine |
| C. | Alimentary canal, heart, liver, lungs, trachea, mouth, intestine |
| D. | Alimentary canal, liver, heart, lungs, trachea, pharynx, intestine |
| Answer» D. Alimentary canal, liver, heart, lungs, trachea, pharynx, intestine | |
| 9685. |
How many nucleosomes are found in helical coil of 30 nm chromatin fibre [RPMT PMT 2000] |
| A. | 10 |
| B. | 12 |
| C. | 6 |
| D. | 9 |
| Answer» D. 9 | |
| 9686. |
Most of the unique properties of water result from the fact that water molecules |
| A. | Are very small |
| B. | Tend to stick together |
| C. | Easily separate from one another |
| D. | Are held together by covalent bonds |
| Answer» E. | |
| 9687. |
In hydrochory small fruits and seeds are carried over the surface of water through |
| A. | Surface tension |
| B. | Light weight of fruits |
| C. | Buoyancy mechanism |
| D. | None of these |
| Answer» B. Light weight of fruits | |
| 9688. |
If the number of chromosomes in most body cells of a mammal is 40, the cells in the seminiferous tubule will have [AFMC 1994] |
| A. | 40 chromosomes |
| B. | 20 chromosomes |
| C. | 10 chromosomes |
| D. | While some other will have 20 |
| Answer» E. | |
| 9689. |
If a pair of shared electrons are more attracted to one nucleus than to the other, they form a/an......bond. |
| A. | Polar covalent |
| B. | Ionic |
| C. | Nonpolar covalent |
| D. | Hydrogen |
| Answer» B. Ionic | |
| 9690. |
Given below are four matchings of an animal and its kind of respiratory organ [CBSE PMT 2003] 1. Silver Fish -- trachea, 2. Scorpion - book lung, 3. Sea squirt - pharyngeal gills, 4. Dolphin -- skin |
| A. | 3 and 4 |
| B. | 1 and 4 |
| C. | 1, 2 and 3 |
| D. | 2 and 4 |
| Answer» D. 2 and 4 | |
| 9691. |
Dust seeds, flattened fruits, balloon fruits are ideal for the |
| A. | Autochory |
| B. | Anemochory |
| C. | Hydrochory |
| D. | Zoochory |
| Answer» C. Hydrochory | |
| 9692. |
A substance that...........is considered to be a chemical compound |
| A. | Has covalent bonds |
| B. | Has a chemical bond |
| C. | Has a stable valence shell |
| D. | Contains at least two different elements |
| Answer» E. | |
| 9693. |
Fruit of custard apple is [AFMC 2004] |
| A. | Etaerio of berries |
| B. | Etaerio of follicles |
| C. | Etaerios of achenes |
| D. | Ethaerio of drups |
| Answer» B. Etaerio of follicles | |
| 9694. |
The formation of a male child depends on the sperms because [CPMT 1992] |
| A. | Sperms may be X and Y |
| B. | Sperms are all Y |
| C. | The eggs from the other ovary may be Y |
| D. | Sperms are more active |
| Answer» B. Sperms are all Y | |
| 9695. |
Molecules are always moving. Some molecules move faste than others,.........is a measure of their average velocity of movement |
| A. | Density |
| B. | Polarity |
| C. | Electronegativity |
| D. | Temperature |
| Answer» E. | |
| 9696. |
During its life cycle, Fasciola hepatica (Liver Fluke) infects its intermediate host and primary host at the following larval stages respectively [CBSE PMT 2003] |
| A. | Redia and miracidium |
| B. | Cercaria and redia |
| C. | Metacercaria and cercaria |
| D. | Miracidium and metacercaria |
| Answer» E. | |
| 9697. |
Coleorrhiza is a cap like covering over [AMU 1997] |
| A. | Plumule in a dicot |
| B. | The radicle in a monocot |
| C. | Radicle in dicot |
| D. | Plumule in a monocot |
| Answer» C. Radicle in dicot | |
| 9698. |
Frequency of crossing over in a chromosome is an index of |
| A. | Relative distance between its genes only |
| B. | Structural affinity between its genes only |
| C. | Strength linkage between its genes only |
| D. | [a] and [b] both are correct |
| Answer» B. Structural affinity between its genes only | |
| 9699. |
Which of the following hierarchy is correct with reference to levels of biological organization |
| A. | Species \[\to \]Communities \[\to \] Populations \[\to \] Ecosystems \[\to \]Landscapes \[\to \]Biosphere |
| B. | Species \[\to \] Populations \[\to \] Communities \[\to \] Ecosystems \[\to \] Landscapes \[\to \] Biosphere |
| C. | Species \[\to \] Populations \[\to \] Ecosystems \[\to \] Landscapes \[\to \] Communities \[\to \] Biosphere |
| D. | Species \[\to \] Population \[\to \] Communities \[\to \] landscapes \[\to \] Biosphere \[\to \] Ecosystems |
| Answer» C. Species \[\to \] Populations \[\to \] Ecosystems \[\to \] Landscapes \[\to \] Communities \[\to \] Biosphere | |
| 9700. |
Which of the following is a non-endospermic monocot seed [Bihar MDAT 1991] |
| A. | Plumbago |
| B. | Castor |
| C. | Linseed |
| D. | Alisma |
| Answer» E. | |