MCQOPTIONS
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MCQOPTIONS
This section includes 1212 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 601. |
Okazaki fragments are connected together through action of_________________? |
| A. | Primase |
| B. | Polymerase |
| C. | Helicase |
| D. | Ligase |
| Answer» E. | |
| 602. |
Oil body is found in the cells of___________? |
| A. | Diatoms |
| B. | Slime moulds |
| C. | Chlorophycean forms |
| D. | None of the these |
| Answer» B. Slime moulds | |
| 603. |
Of the following which one is not the characteristic of the plants included in psilopsida_____________? |
| A. | Gametophyte is colourless |
| B. | They have mycorrhizal association |
| C. | Rhizoids bear Rhizome |
| D. | Aerial branches have veinless outgrowths |
| Answer» D. Aerial branches have veinless outgrowths | |
| 604. |
Of the following, which one light – gathering? |
| A. | Antenna complex |
| B. | Reaction centre |
| C. | Photosystem |
| D. | None of these |
| Answer» B. Reaction centre | |
| 605. |
Of the following which one is not the characteristic of triploblasts? |
| A. | All of them have blood vascular system |
| B. | They may be coelomate pseudocoelomate or acoelomate |
| C. | They are included in grade bilaterian |
| D. | All of them have digestive system |
| Answer» B. They may be coelomate pseudocoelomate or acoelomate | |
| 606. |
Of the following which one is not the characteristic of mitochondria? |
| A. | It contains F1 particles |
| B. | It is involved in the synthesis of protein |
| C. | It is a self replicating organelle |
| D. | Number of mitochondria is constant |
| Answer» E. | |
| 607. |
Of the following which one is not the characteristic of Kingdom Animalia. |
| A. | All animals are ingestive heterotrophs |
| B. | All animals are eukaryotes |
| C. | All animals develop from the dissimilar gametes i.e. large sperm and small egg. |
| D. | It is largest kingdom |
| Answer» D. It is largest kingdom | |
| 608. |
Of the following which one is not the characteristic of green algae? |
| A. | Some green algae possess cell wall with cellulose |
| B. | They are generally accepted as the ancestors of green plants |
| C. | Chlorella is unicellular non-motile green algae |
| D. | None of these |
| Answer» B. They are generally accepted as the ancestors of green plants | |
| 609. |
Of the following which one is not the characteristic of dinoflagellates? |
| A. | Most of them are unicellular |
| B. | They have blooms |
| C. | Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium |
| D. | None of these |
| Answer» D. None of these | |
| 610. |
Of the following which one is not included in Proterostomes? |
| A. | Arthropods |
| B. | Hemichordates |
| C. | Annelids |
| D. | Molluses |
| Answer» C. Annelids | |
| 611. |
Of the following which one is not found in series proterostomia? |
| A. | Annelida |
| B. | Arthropoda |
| C. | Mollusea |
| D. | Echinodermata |
| Answer» E. | |
| 612. |
Of the following which one is not an energy releasing process? |
| A. | Glycolysis |
| B. | Respiration |
| C. | Photosynthesis |
| D. | Kreb’s cycle |
| Answer» D. Kreb’s cycle | |
| 613. |
Of the following which one is non-cellular in most cases in animals? |
| A. | Mesenchyme |
| B. | Sclerenchyma |
| C. | Chlorenchyma |
| D. | Mesoderm |
| Answer» B. Sclerenchyma | |
| 614. |
Of the following, which one is missing in herbivores_______________? |
| A. | Premolars |
| B. | Canines |
| C. | Incisors |
| D. | Molars |
| Answer» C. Incisors | |
| 615. |
Of the following, which one is better respiratory medium___________? |
| A. | Air |
| B. | Water |
| C. | Soil |
| D. | None of these |
| Answer» B. Water | |
| 616. |
Of the following, which one is a contagious disease? |
| A. | Tuberculosis |
| B. | Lungs cancer |
| C. | Asthma |
| D. | Emphysema |
| Answer» B. Lungs cancer | |
| 617. |
Of the following, which one has more variety of nutrition________________? |
| A. | Animals |
| B. | Bacteria |
| C. | Plants |
| D. | Fungi |
| Answer» B. Bacteria | |
| 618. |
Of the following which one has glassy shells________________? |
| A. | Radiolarians |
| B. | Forams |
| C. | Both of these |
| D. | None of these |
| Answer» B. Forams | |
| 619. |
Of the following, which one causes higher production of food in green plants? |
| A. | Blue |
| B. | Orange |
| C. | Red |
| D. | Violet |
| Answer» D. Violet | |
| 620. |
Of the following four options which one is most advanced? |
| A. | Anthoceropsida |
| B. | Bryopsida |
| C. | Hepaticopsida |
| D. | None of these |
| Answer» B. Bryopsida | |
| 621. |
______________ of earth surface is covered with water? |
| A. | 10% |
| B. | 30% |
| C. | 75% |
| D. | 90% |
| Answer» D. 90% | |
| 622. |
____________% of Glucose normally present in our blood is? |
| A. | 0.80% |
| B. | 0.08% |
| C. | 1.80% |
| D. | 8% |
| Answer» C. 1.80% | |
| 623. |
Nutrition in fungi is___________? |
| A. | Photosynthetic |
| B. | Chemosynthetic |
| C. | Completely parasitic |
| D. | Absorptive heterotrophs |
| Answer» E. | |
| 624. |
Number of spiracles present in cockroach is___________? |
| A. | 15 |
| B. | 10 |
| C. | 20 |
| D. | 30 |
| Answer» D. 30 | |
| 625. |
Number of spiracles present in the thorax of cockroach is___________? |
| A. | 2 |
| B. | 3 |
| C. | 5 |
| D. | 4 |
| Answer» E. | |
| 626. |
Number of pairs of cranial nerves is__________? |
| A. | 10 |
| B. | 11 |
| C. | 12 |
| D. | 13 |
| Answer» D. 13 | |
| 627. |
Number of nuclear pores/nucleus in an RBC are_________? |
| A. | 1?3 |
| B. | 3?4 |
| C. | 10000 |
| D. | 30000 |
| Answer» C. 10000 | |
| 628. |
Number of chromosomes in E.coli ? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 629. |
Number of cervical vertebrae is_____________? |
| A. | 5 |
| B. | 7 |
| C. | 9 |
| D. | 12 |
| Answer» C. 9 | |
| 630. |
Number of cells that are destroyed in adults by apoptosis are ________ ? |
| A. | 20 to 35 billion cells |
| B. | 50 to 70 billion cells |
| C. | 10 to 20 billion cells |
| D. | 15 to 25 billion cells |
| Answer» C. 10 to 20 billion cells | |
| 631. |
Notochord is present throughout life in___________? |
| A. | Urochordates |
| B. | Cephalochordates |
| C. | Chordates |
| D. | Vertebrates |
| Answer» C. Chordates | |
| 632. |
Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the ? |
| A. | Concentration of water molecules inside and outside the cell |
| B. | Concentration of enzymes on either side of the cell membrane |
| C. | Rate of molecular motion on either side of the cell membrane |
| D. | None of these |
| Answer» B. Concentration of enzymes on either side of the cell membrane | |
| 633. |
Normal resting membrane potential of a neuron is_____________? |
| A. | – 50 mv |
| B. | – 60 mv |
| C. | – 70 mv |
| D. | – 80 mv |
| Answer» D. – 80 mv | |
| 634. |
Normal body temperature in mamals like human beings is____________? |
| A. | 26 – 28°C |
| B. | 36 – 38°C |
| C. | 46 – 48°C |
| D. | 56 – 58°C |
| Answer» C. 46 – 48°C | |
| 635. |
Normal action potential of a neuronal cell is ___________? |
| A. | plus 50 mv |
| B. | plus 60 mv |
| C. | plus 70 mv |
| D. | plus 80 mv |
| Answer» B. plus 60 mv | |
| 636. |
Non polar organic molecules are ___________ in water? |
| A. | Soluble |
| B. | Insoluble |
| C. | Partially soluble |
| D. | Depends upon condition |
| Answer» C. Partially soluble | |
| 637. |
Non-enveloped naked viruses are known as___________? |
| A. | prions |
| B. | bacteriophages |
| C. | oncoviruses |
| D. | virions |
| Answer» E. | |
| 638. |
Nodules on roots of leguminous plants have __________ bacteria? |
| A. | Anaerobic |
| B. | Nitrogen fixing |
| C. | Nitrifying |
| D. | Ammonifying |
| Answer» C. Nitrifying | |
| 639. |
Nitrogen is present in___________? |
| A. | carbohydrates |
| B. | proteins |
| C. | lipids |
| D. | carbonates |
| Answer» C. lipids | |
| 640. |
Nitrifying bacteria are the examples of___________? |
| A. | Hetrotrophic bacteria |
| B. | Chemosynthetic bacteria |
| C. | Saprophytic bacteria |
| D. | Parasitic bacteria |
| Answer» C. Saprophytic bacteria | |
| 641. |
Nissl’s granules are present in which part of the neuron_________________? |
| A. | Axoplasm |
| B. | Myelin sheath |
| C. | Dendrite |
| D. | Soma |
| Answer» E. | |
| 642. |
Net yield of H2O in Photosynthesis is__________? |
| A. | 1 molecule |
| B. | 6 molecules |
| C. | 3 molecules |
| D. | 0 molecule |
| Answer» E. | |
| 643. |
Nervous system of nematods consists of? |
| A. | Ventral nerve cord |
| B. | Dorsal nerve cord |
| C. | Lateral nerve cord |
| D. | All of these |
| Answer» E. | |
| 644. |
Nephrostome in earthworm opens in____________? |
| A. | External space |
| B. | Internal Body cavity |
| C. | In gut |
| D. | In Bladder |
| Answer» C. In gut | |
| 645. |
NADPH2 provides___________? |
| A. | assimilatory power |
| B. | chemical energy |
| C. | energized electrons |
| D. | All of these |
| Answer» E. | |
| 646. |
NADH is oxidized by___________? |
| A. | Coenzyme ? |
| B. | Cytochrome b |
| C. | Oxygen |
| D. | Glycolysis |
| Answer» B. Cytochrome b | |
| 647. |
Na+ -K+ ATPase pump is important for_______________? |
| A. | Maintenance of resting potential |
| B. | Massive out flux of K+ after depolarization |
| C. | Recovery of resting potential |
| D. | Conversion of resting potential into action potential |
| Answer» D. Conversion of resting potential into action potential | |
| 648. |
Mycorrhizae are found in about__________vascular plants? |
| A. | 90% |
| B. | 95% |
| C. | 98% |
| D. | 96% |
| Answer» C. 98% | |
| 649. |
Mycoplasmas have been included in bacteria because: |
| A. | Do not have a cell wall |
| B. | Are heterotrophic |
| C. | Lack membrane bounded organelles |
| D. | Reproduce by binary fission |
| Answer» D. Reproduce by binary fission | |
| 650. |
MSH is produced from___________? |
| A. | Anterior pituitary |
| B. | Median pituitary |
| C. | Posterior pituitary |
| D. | None of these |
| Answer» C. Posterior pituitary | |