MCQOPTIONS
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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.
| 9851. |
The early stage human embryo distinctly possesses [AIIMS 2003] |
| A. | Gills |
| B. | Gill slits |
| C. | External ear (Pinna) |
| D. | Eye brows |
| Answer» C. External ear (Pinna) | |
| 9852. |
Calvin's cycle is found in [RPMT 1997] |
| A. | Only\[{{C}_{3}}\]plants |
| B. | Only photophillous plants |
| C. | All\[{{C}_{4}}\]plants |
| D. | All photosynthetic plants |
| Answer» E. | |
| 9853. |
Which of the following is considered to be the best chemical method of fixing atmospheric nitrogen [BHU 2004] |
| A. | Fisher method |
| B. | Decan method |
| C. | Haber-Bosch method |
| D. | Paranas-Meyerhoff method |
| Answer» D. Paranas-Meyerhoff method | |
| 9854. |
Heterodont, thecodont and diphydont are the characteristics of |
| A. | Egg laying mammals |
| B. | Viviparous mammals |
| C. | Carnivorous mammals |
| D. | All of the above |
| Answer» C. Carnivorous mammals | |
| 9855. |
The wing of the seed of Pinus develops from |
| A. | Outer layer of the integument and basal part of the ovuliferous scale |
| B. | Inner layer of the integument and basal part of the ovuliferous scale |
| C. | Only from outer layer of the integument |
| D. | From ovuliferous scale |
| Answer» B. Inner layer of the integument and basal part of the ovuliferous scale | |
| 9856. |
A plant example in which reproductive structures lack a layer of sterile vegetative cells surrounding the egg [BHU 1994] |
| A. | Funaria |
| B. | Riccia |
| C. | Saccharomyces |
| D. | Cycas |
| Answer» D. Cycas | |
| 9857. |
The chill and fever recurring after 48 hours in benign tertian malaria is due to [CPMT 1987] |
| A. | Plasmodium vivax |
| B. | P. malariae |
| C. | P. falciparum |
| D. | None of the above |
| Answer» B. P. malariae | |
| 9858. |
Mycoplasma differs from virus in being sensitive to [MP PMT 1995] |
| A. | Sugar |
| B. | Tetracycline |
| C. | Protein |
| D. | Amino acid |
| Answer» C. Protein | |
| 9859. |
Lymph contains |
| A. | Only leucocytes |
| B. | 99% lymphocytes, no RBCs and other leucocytes |
| C. | 50% leucocytes and 50% erythrocytes |
| D. | 99% erythrocytes and 1% small lymphocytes |
| Answer» C. 50% leucocytes and 50% erythrocytes | |
| 9860. |
In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because [CBSE PMT 2003] |
| A. | They can be studied from the samples of fossil remains |
| B. | They are small, and therefore, easy to study |
| C. | They are uniparental in origin and do not take part in recombination |
| D. | Their structure is known in greater detail |
| Answer» D. Their structure is known in greater detail | |
| 9861. |
In Pinguicula (butterwort), leaves are large and fleshy and bear 2 types of glands. These are |
| A. | Stalked mucilage glands and sessile digestive glands |
| B. | Sessile mucilage and stalked digestive glands |
| C. | Unicellular mucilage and multicellular digestive glands |
| D. | Both mucilage and digestive glands are alike |
| Answer» B. Sessile mucilage and stalked digestive glands | |
| 9862. |
Photorespiration is characteristic of [MP PMT 1994; BHU 1995, 2002] |
| A. | CAM plants |
| B. | \[{{C}_{3}}\]plants |
| C. | \[{{C}_{4}}\]plants |
| D. | None of the above |
| Answer» C. \[{{C}_{4}}\]plants | |
| 9863. |
Fly-ash is a/an: [BHU 2004] |
| A. | Insectivorous plant |
| B. | Light airborne particulate matter |
| C. | New name of orchid plant |
| D. | Causal organism of various diseases |
| Answer» C. New name of orchid plant | |
| 9864. |
During dark reaction for fixation of carbon, the three carbon atoms of each molecule of 3-phosphoglyceric acid (PGA) are derived from [BHU 1994] |
| A. | RuBP only |
| B. | \[C{{O}_{2}}\]only |
| C. | \[RuBP+C{{O}_{2}}\] |
| D. | \[RuBP+C{{O}_{2}}+PEP\] |
| Answer» D. \[RuBP+C{{O}_{2}}+PEP\] | |
| 9865. |
Gnathostomata is divided into 2 super classes, these are |
| A. | Acrania and craniata |
| B. | Pisces and tetrapoda |
| C. | Amniota and bipedal |
| D. | Tetrapoda and gnathostomata |
| Answer» C. Amniota and bipedal | |
| 9866. |
Which one of the following sets of structure in Pinus belong entirely to the gametophytic generation |
| A. | Ovuliferous scale, embryo, bract scale |
| B. | Bract scale, prothallial cells in pollen, integument |
| C. | Embryo, endosperm, pollen |
| D. | Endosperm, sperm, megaspore |
| Answer» E. | |
| 9867. |
Ainsworth has placed Rhizopus in [CPMT 1991] |
| A. | Zygomycetes |
| B. | Mastigomycotina |
| C. | Ascomycotina |
| D. | Myxomycotina |
| Answer» B. Mastigomycotina | |
| 9868. |
The most thoroughly studied of the known bacteria-plant interactions is the [CBSE PMT 2004] |
| A. | Nodulation of Sebania stems by nitrogen fixing bacteria |
| B. | Plant growth stimulation by phosphate-solubilising bacteria |
| C. | Cyanobacterial symbiosis with some aquatic ferns |
| D. | Gall formation on certain angiosperms by Agrobacterium |
| Answer» E. | |
| 9869. |
Malarial parasite can best be obtained from a patient [AFMC 1985; CPMT 1973] |
| A. | An hour before rise of temperature |
| B. | When temperature rises with rigor |
| C. | When temperature comes to normal |
| D. | Five hours after the temperature reaches to normal |
| Answer» C. When temperature comes to normal | |
| 9870. |
Platelets released during blood clotting is [EAMCET 1998] |
| A. | Thrombin |
| B. | Prothrombin |
| C. | Thrombokinase |
| D. | Fibrinogen |
| Answer» D. Fibrinogen | |
| 9871. |
Which RNA is having least age [MP PMT 2002] |
| A. | m RNA |
| B. | t RNA |
| C. | r RNA |
| D. | None of the above |
| Answer» B. t RNA | |
| 9872. |
Which one of the following sets represents the correct sequence of the evolution of man [MP PMT 2001] |
| A. | Kenyapithecus - Australopithecus -Homo habilis - Pithecanthropus - Homo sapiens |
| B. | Kenyapithecus - Australopithecus -Pithecanthropus - Homo habilis -Homo sapiens |
| C. | Australopithecus - Kenyapithecus - Homo habilis - Pithecanthropus - Homo sapiens |
| D. | Pithecanthropus - Australopithecus, Kenyapithecus - Homo habilis - Homo sapiens |
| Answer» B. Kenyapithecus - Australopithecus -Pithecanthropus - Homo habilis -Homo sapiens | |
| 9873. |
A plant in which whole leaf is changed into a pitcher but is not an insectivorous is |
| A. | Nepenthes |
| B. | Darlingtonia |
| C. | Sarracenia |
| D. | Dischidia |
| Answer» E. | |
| 9874. |
The process used in conversion of pyruvate to acetyl CoA is [Kerala PMT 2004] |
| A. | Oxidative dehydration |
| B. | Oxidative decarboxylation |
| C. | Oxidative phosphorylation |
| D. | Oxidative dehydrogenation |
| E. | Oxidative dephosphorylation |
| Answer» C. Oxidative phosphorylation | |
| 9875. |
Which of the following trace element is essential for auxin synthesis in plants [CBSE PMT 2003] |
| A. | Molybdenum |
| B. | Chlorine |
| C. | Zinc |
| D. | Boron |
| Answer» D. Boron | |
| 9876. |
Characteristic features of cyclostomata are |
| A. | Elongated cylindrical body |
| B. | Round mouth |
| C. | Round mouth without jaws and paired appendages |
| D. | Round mouth with jaw and unpaired appendages |
| Answer» D. Round mouth with jaw and unpaired appendages | |
| 9877. |
In Plasmodium, gametocytes are formed in man, but do not develop fully in the R.B.C. because of [CPMT 1983] |
| A. | Antibodies present in blood |
| B. | Antigens present in blood |
| C. | Higher temperature of blood |
| D. | Lower temperature of blood |
| Answer» D. Lower temperature of blood | |
| 9878. |
Pseudomonas cola causes |
| A. | Mycosis |
| B. | Aspergillosis |
| C. | Stomach pain |
| D. | None of the above |
| Answer» D. None of the above | |
| 9879. |
DNA generally acts as template for the synthesis of [CPMT 1979, 87] |
| A. | Only protein |
| B. | Only DNA |
| C. | Only RNA |
| D. | Both DNA and RNA |
| Answer» E. | |
| 9880. |
Correct sequence of stages in the evolution of the modern man, (Homo sapiens), is [Pb. PMT 2000; Kerala PMT 2004] |
| A. | Neanderthal man, Australopithecus, Cro-magnon man, Homo erectus, modern man |
| B. | Australopithecus, Homo erectus, Neanderthal man, Cro-magnon man, modern man |
| C. | Homo erectus, Australopithecus, Neanderthal man, Cro-magnon man, modern man |
| D. | Australopithecus, Neanderthal man, Cro-magnon man, Homo erectus, modern man |
| Answer» C. Homo erectus, Australopithecus, Neanderthal man, Cro-magnon man, modern man | |
| 9881. |
Adventitious roots of Pistia are helpful in |
| A. | Vegetative reproduction |
| B. | Storing the food material |
| C. | Photosynthesis |
| D. | Balancing the plant |
| Answer» E. | |
| 9882. |
The rate of respiration depends upon the |
| A. | Quantity of protoplasm in cell |
| B. | Quality of protoplasm in cell |
| C. | Both [a] and [b] |
| D. | None of the above |
| Answer» D. None of the above | |
| 9883. |
What is meant by fret membrane |
| A. | Thylakoids |
| B. | Quantasomes |
| C. | Stroma lamellae |
| D. | Outer membranes of chloroplast |
| Answer» D. Outer membranes of chloroplast | |
| 9884. |
Enzymes generally have |
| A. | Same pH and temperature optima |
| B. | Same pH but different temperature optima |
| C. | Different pH but same temperature optima |
| D. | Different pH and different temperature optima |
| Answer» D. Different pH and different temperature optima | |
| 9885. |
EDTA is much used in tissue cultures, it is a [AIIMS 1987] |
| A. | Hormone |
| B. | Vitamin |
| C. | Buffer |
| D. | Nutrient |
| Answer» D. Nutrient | |
| 9886. |
Pinus seed is originated in [MP PMT 2003] |
| A. | Capsule |
| B. | Microsporophyll |
| C. | Microsporangia |
| D. | Megasporophyll |
| Answer» E. | |
| 9887. |
Which one of the following is a parasitic fungus |
| A. | Rhizopus |
| B. | Peziza |
| C. | Mucor |
| D. | Peronospora |
| Answer» E. | |
| 9888. |
Centric discoid form of diatom is [Haryana PMT 2001] |
| A. | Diploneis |
| B. | Coscinodiscus |
| C. | Stephanodiscus |
| D. | Camphyloneis |
| Answer» C. Stephanodiscus | |
| 9889. |
Epithelium in case of serous membranes is called |
| A. | Ectothelium |
| B. | Endothelium |
| C. | Mesothelium |
| D. | Serothelium |
| Answer» D. Serothelium | |
| 9890. |
Salmonella typhi was discovered by |
| A. | Leeuwenhoek |
| B. | Eberth |
| C. | Koch |
| D. | Lister |
| Answer» C. Koch | |
| 9891. |
Escherichia coli is an important material for genetic experiments because [CPMT 1989] |
| A. | It is harmless |
| B. | It is haploid |
| C. | It can be easily cultured |
| D. | Both [b] and [c] |
| Answer» E. | |
| 9892. |
If you go back in the history approx. 4500 million years back when atmosphere was reducing the organism were [CPMT 2001; MP PMT 2001; BVP 2003; BHU 2003] |
| A. | Autotroph, aerobic |
| B. | Chemo-autotroph, anaerobic |
| C. | Chemo-heterotroph, anaerobic |
| D. | Heterotroph, anaerobic |
| Answer» D. Heterotroph, anaerobic | |
| 9893. |
Divergent multicostate reticulate venation is found in leaves of |
| A. | Castor |
| B. | Luffa |
| C. | Cotton |
| D. | All of these |
| Answer» E. | |
| 9894. |
Energy transfer in photosynthesis occurs as [BHU 2003] |
| A. | Phycoerythrin\[\to \]Phycocyanin\[\to \]Carotenoid\[\to \]Chlorophyll a |
| B. | Chlorophyll b \[\to \]Carotenoid\[\to \]Phycoerythrin \[\to \]Chlorophyll a |
| C. | Phycocyanin\[\to \]Phycoerythrin\[\to \]Carotenoid \[\to \]Chlorophyll a |
| D. | Chlorophyll\[\to \]Carotenoid \[\to \]Phycocyanin\[\to \]Chlorophyll a |
| Answer» B. Chlorophyll b \[\to \]Carotenoid\[\to \]Phycoerythrin \[\to \]Chlorophyll a | |
| 9895. |
Which of the following group of characters is present in all chordates in some or other stage in their life [CPMT 1982] |
| A. | Mammary glands, hair and gill slits |
| B. | Notochord, gill slits and dorsal tubular nervous system |
| C. | Notochord, scales and dorsal tubular nervous system |
| D. | Gill slits, vertebral column and notochord |
| Answer» C. Notochord, scales and dorsal tubular nervous system | |
| 9896. |
Saccus of Pinus pollen is a modification of |
| A. | Intine |
| B. | Exine |
| C. | Tube cell |
| D. | Perine |
| Answer» C. Tube cell | |
| 9897. |
Fusion of gametangia in Rhizopus is [AFMC 2002] |
| A. | Planogemetic copulation |
| B. | Gametangial contact |
| C. | Gametangial copulation |
| D. | Spermatogamy |
| Answer» D. Spermatogamy | |
| 9898. |
Exoerythrocytic schizogony of Plasmodium takes place in [MP PMT 1987] |
| A. | RBC |
| B. | Leucocytes |
| C. | Liver in which cryptomerozoites are formed |
| D. | Liver in which metacryptomerozoites are formed |
| Answer» E. | |
| 9899. |
The plasma resembles in its composition the filtrate produced in the glomerulus except for the presence of [AIIMS 1980] |
| A. | Glucose |
| B. | Chlorides |
| C. | Amino acids |
| D. | Proteins |
| Answer» E. | |
| 9900. |
Vegina (Hypopodium = leaf base) is pulvinus in |
| A. | Grasses |
| B. | All legumes |
| C. | Some legumes |
| D. | Legumes and grasses |
| Answer» D. Legumes and grasses | |