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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.
| 12701. |
When and where first time word "biotechno logy" was used |
| A. | In 1950 in England |
| B. | In 1960 in Holand |
| C. | In 1920 in U.N. |
| D. | In 1910 in Germany |
| Answer» D. In 1910 in Germany | |
| 12702. |
Cell wall in higher plants is made up of [CPMT 1995, 98] |
| A. | Cellulose + lignin |
| B. | Cellulose + pectine |
| C. | Cellulose + suberin |
| D. | Cellulose + lipid |
| Answer» C. Cellulose + suberin | |
| 12703. |
Assertion : Spirogyra shows anisogamy. Reason : Gametes are identified on the basis of their motility. |
| 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 | |
| 12704. |
Assertion : E. coli is the most studied prokaryotes. Reason : E. coli is Gram +ve bacteria. |
| 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» D. If both the assertion and reason are false | |
| 12705. |
The nuclear membrane disappears in [CPMT 1993; MP PMT 1995, 98; J&K CET 2002] |
| A. | Metaphase |
| B. | Early prophase |
| C. | Late prophase |
| D. | Anaphase |
| Answer» D. Anaphase | |
| 12706. |
In which phase proteins for spindle fibre formation are synthesized [Orissa JEE 2004] |
| A. | \[{{G}_{1}}\]phase |
| B. | \[{{G}_{2}}\]phase |
| C. | S-phase |
| D. | Anaphase |
| Answer» C. S-phase | |
| 12707. |
Endemic plants are those which are [BHU 1978; CPMT 1999] |
| A. | Cosmopolitan in distribution |
| B. | Restricted to certain area |
| C. | Found in arctic region |
| D. | Gregarious in habit |
| Answer» C. Found in arctic region | |
| 12708. |
From which part of turmeric plant (Curcuma longa), the turmeric powder is obtained [BHU 1984] |
| A. | Seed |
| B. | Dried rhizome |
| C. | Dried root |
| D. | Dried fruit |
| Answer» C. Dried root | |
| 12709. |
In which of the following animal cleavage divisions are restricted to a small part of cytoplasm & nucleus in animal pole of egg [RPMT 2002] |
| A. | Cockroach |
| B. | Frog |
| C. | Chick |
| D. | Rabbit |
| Answer» D. Rabbit | |
| 12710. |
During interphase, RNA and proteins are synthesized in [MP PMT 1997] |
| A. | S phase |
| B. | \[{{G}_{1}}\]phase |
| C. | \[{{G}_{2}}\]phase |
| D. | In both\[{{G}_{1}}\]and\[{{G}_{2}}\]phases |
| Answer» E. | |
| 12711. |
Which of the following is considered as more evolved [CPMT 1992] |
| A. | Dicot plant |
| B. | Monocot plant |
| C. | Data are incomplete |
| D. | Both (a) and (b) |
| Answer» C. Data are incomplete | |
| 12712. |
Chromosome start separating at which stage of mitosis [AFMC 1996] |
| A. | Early metaphase |
| B. | Late metaphase |
| C. | Early anaphase |
| D. | Early telophase |
| Answer» D. Early telophase | |
| 12713. |
Which one of the following is pest of tobacco [JIPMER 1997] |
| A. | Tribolium sp. |
| B. | Spodoptera sp. |
| C. | Pectinophora sp. |
| D. | Calandra sp. |
| Answer» C. Pectinophora sp. | |
| 12714. |
Sexual reproduction and mobile cells are absent in |
| A. | Chlorophyceae |
| B. | Myxophyceae |
| C. | Rhodophyceae |
| D. | Phaeophyceae |
| Answer» C. Rhodophyceae | |
| 12715. |
The modern concept of gene is [DPMT 1985; CPMT 1994] |
| A. | A segment of DNA capable of crossing over |
| B. | A functional unit of DNA |
| C. | A segment of DNA |
| D. | A segment of chromosome |
| Answer» C. A segment of DNA | |
| 12716. |
Assertion : Bacteria have three basic shapes, i.e., round, rod, spiral. Reason : Cocci and Bacilli may form clusters or chain of a definite length. [AIIMS 2000] |
| 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» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12717. |
Assertion : \[C{{O}_{2}}\]is transported from mesophyll cells to bundle sheath of chloroplasts in \[{{C}_{4}}\]plants. Reason : RuBP is called final acceptor of \[C{{O}_{2}}\]in \[{{C}_{4}}\]plants. |
| 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» F. | |
| 12718. |
Chlorophyll a is not found in |
| A. | Algae |
| B. | Photosynthetic bacteria |
| C. | Both [a] and [b] |
| D. | Bryophytes |
| Answer» C. Both [a] and [b] | |
| 12719. |
Nandan-kanan zoo is known for the [MP PMT 1993] |
| A. | Hippopotamus |
| B. | Nilgiri Tahr |
| C. | White tiger |
| D. | Whale |
| Answer» C. White tiger | |
| 12720. |
Antivenin injections used for snake bite are prepared at [BCECE 2001] |
| A. | IVRI, Bareilly |
| B. | NDRI, Karnal |
| C. | Haffkin?s Research Institute, Mumbai |
| D. | IARI, New Delhi |
| Answer» D. IARI, New Delhi | |
| 12721. |
The plant material which is widely used in the preparation of culture medium is [AIIMS 1998] |
| A. | Cycas revoluta |
| B. | Cocos nucifera |
| C. | Pinus longifolia |
| D. | Borassus flabellifer |
| Answer» C. Pinus longifolia | |
| 12722. |
Prophase is longer in [Manipal MEE 1995; CPMT 2001; MHCET 2001] |
| A. | Mitosis |
| B. | Meiosis |
| C. | Equal in both |
| D. | Amitosis |
| Answer» C. Equal in both | |
| 12723. |
The males of grasshoppers and moths posses two sets of autosomes and [MP PMT 1994] |
| A. | X and Y chromosomes |
| B. | Only X chromosome |
| C. | Only Y chromosome |
| D. | Neither X nor Y chromosome |
| Answer» C. Only Y chromosome | |
| 12724. |
Which of the following organism is useful in the preparation of roquefort cheese [BHU 2004] |
| A. | Mucor |
| B. | Rhizopus |
| C. | Aspergillus |
| D. | Penicillium |
| Answer» E. | |
| 12725. |
Which of the following hormone is responsible for senescence [CBSE PMT 2001] |
| A. | GA |
| B. | ABA |
| C. | Auxin |
| D. | Cytokinin |
| Answer» C. Auxin | |
| 12726. |
The Bactrian camels possess |
| A. | Two humps |
| B. | One hump |
| C. | Four humps |
| D. | Variable number of humps |
| Answer» B. One hump | |
| 12727. |
From old times cattle are being used for |
| A. | Milk production |
| B. | To draw water from wells |
| C. | For production of biogas |
| D. | All these purposes |
| Answer» E. | |
| 12728. |
Which of the following chemical characteristics is not common to all living beings [AIIMS 1980] |
| A. | Similar triplet code for amino acids |
| B. | Energy is stored by high phosphate bonds |
| C. | Type of protein present in the body |
| D. | Ribosomes are the sites of protein synthesis |
| Answer» D. Ribosomes are the sites of protein synthesis | |
| 12729. |
Which of the following accelerates apical meristem and exerts direct effect on the growth of plant axis in length |
| A. | Cytokinin |
| B. | Ethylene |
| C. | Gibberellin |
| D. | Auxin |
| Answer» E. | |
| 12730. |
Repulsion of homologous chromosomes takes place in [MP PMT 2001] |
| A. | Zygotene |
| B. | Leptotene |
| C. | Diakinesis |
| D. | Diplotene |
| Answer» E. | |
| 12731. |
The cellular role for microtubule is |
| A. | Protein synthesis |
| B. | Intracellular communication |
| C. | Digestion of aged organelles |
| D. | Cell destruction during development |
| Answer» C. Digestion of aged organelles | |
| 12732. |
Auxin-B was first isolated by |
| A. | Kogl and Erxlaben |
| B. | Kogl, Erxlaben and Hagen Smit |
| C. | Miller and Skoog |
| D. | Yabuta and Sumiki |
| Answer» C. Miller and Skoog | |
| 12733. |
Reserve food material of algae is [BCECE 2005] |
| A. | Starch |
| B. | Glycogen |
| C. | Fat |
| D. | Sugar |
| Answer» B. Glycogen | |
| 12734. |
Assertion : Sperms of Riccia are biflagellate. Reason : Sperms show swimming nature. |
| 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» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12735. |
The presence of diversity at the junction of territories of two different habitats is known as [BHU 2005] |
| A. | Bottle neck effect |
| B. | Edge effect |
| C. | Junction effect |
| D. | Pasteur effect |
| Answer» C. Junction effect | |
| 12736. |
Read the assertion and reason carefully: Assertion : Pollen grain reaches directly to the egg, which is seated deep in the ovarian cavity. Reason : To effect fertilization, the pollen grains germinate on the stigma. |
| 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» F. | |
| 12737. |
Assertion : The interval between the entry of the sporozoite into human blood and the appearance of the fever is called incubation period. Reason : The incubation period of malaria in man is about 7 days. |
| 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» D. If both the assertion and reason are false | |
| 12738. |
Assertion : DNA polymerase-I acts as proofreader. Reason : DNA polymerase-I removes mismatched nucleotides. |
| 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» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12739. |
A biome consist of organisms of various trophic levels [AMU 1991] |
| A. | Reacting with their abiotic environment |
| B. | Constituting a complex sociological unit |
| C. | Living a symbiotic life |
| D. | Inhabiting a desert |
| Answer» B. Constituting a complex sociological unit | |
| 12740. |
Which one of the following is correct matching of a plant, its habit and the forest type where it normally occurs [AIIMS 2005] |
| A. | Prosopis, tree, scrub |
| B. | Saccharum, grass, forest |
| C. | Shorea robusta, herb, tropical rain forest |
| D. | Acacia catechu, tree, coniferous forest |
| Answer» C. Shorea robusta, herb, tropical rain forest | |
| 12741. |
Assertion : The principle of segregation given by Mendel is the principle of purity A of gametes. Reason : Gametes are pure for a character. |
| 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» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12742. |
Which one among the following is likely to have the highest levels of DDT depositions in its body [CBSE PMT 1994] |
| A. | Eel |
| B. | Crab |
| C. | Sea gull |
| D. | Phytoplankton |
| Answer» E. | |
| 12743. |
In India, rain forests are found in [DPMT 1980] |
| A. | Uttar Pradesh and Bihar |
| B. | Madhya Pradesh and Orissa |
| C. | Tamil Nadu and Andhra Pradesh |
| D. | Western Ghats and Eastern Himalayas |
| Answer» E. | |
| 12744. |
Read the assertion and reason carefully: Assertion : Succulents leaves are found in xerophytic habitats. Reason : Succulents leaves store water and have sunken stomata. |
| 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» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12745. |
Hippocampus (Sea Horse) belongs to the class [HP PMT 2005] |
| A. | Agnatha |
| B. | Chondrichtyes |
| C. | Osteichthyes |
| D. | Mammalia |
| Answer» C. Osteichthyes | |
| 12746. |
Assertion : Smooth muscle fibres do not appear to be striated. Reason : This is due to regular alternate arrangement of thick and thin filaments is smooth muscle fibre. |
| 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» D. If both the assertion and reason are false | |
| 12747. |
Along the sea-coast which of the following is least likely to be found [CPMT 1982] |
| A. | Brown algae |
| B. | Red algae |
| C. | Mosses |
| D. | All the above |
| Answer» D. All the above | |
| 12748. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : In ageing, power of intake of useful material and expelling of harmful materials out of the cells both decrease. Reason : With age, elastin protein of connective tissue becomes less flexible, less permeable and insoluble. |
| 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» D. If both the assertion and reason are false | |
| 12749. |
Which of the following is an antifungal antibiotics |
| A. | Penicillin |
| B. | Cephalosporin |
| C. | Griseofulvin |
| D. | Chloramphenicol |
| Answer» D. Chloramphenicol | |
| 12750. |
Sporophyte dependent upon gametophyte is found in [BHU 1995] |
| A. | Algae |
| B. | Fungi |
| C. | Bryophytes |
| D. | Pteridophytes |
| Answer» D. Pteridophytes | |