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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.
| 8701. |
Term 'ecology' was proposed by [CPMT 1983; RPMT 1995; MP PMT 2003; KCET 2004] |
| A. | William |
| B. | Odum |
| C. | Reiter |
| D. | Daubenmier |
| Answer» D. Daubenmier | |
| 8702. |
The study of inter-relationship between living organisms and their environment is called [CPMT 1977, 89; AMU 1989] |
| A. | Ecosystem |
| B. | Phytogeography |
| C. | Ecology |
| D. | Phytosociology |
| Answer» D. Phytosociology | |
| 8703. |
Ruthless exploitation and pollution of the environment has increased the magnitude of waste materials which has disturbed the operations of all important |
| A. | Biomes |
| B. | Ecosystems |
| C. | Bio-geo-chemical cycles |
| D. | All above |
| Answer» E. | |
| 8704. |
The functional unit of ecology is the |
| A. | Organism |
| B. | Biosphere |
| C. | Ecosystem |
| D. | Community |
| Answer» B. Biosphere | |
| 8705. |
Which one of the following scientists is famous for his contributions in ecological researches |
| A. | R.N. Singh |
| B. | M.S. Swaminathan |
| C. | B.M. Johri |
| D. | R.D. Mishra |
| Answer» E. | |
| 8706. |
The idea of food chain was introduced by which one of the following ecologist |
| A. | Tansley |
| B. | Elton |
| C. | Clements |
| D. | Phillipson |
| Answer» C. Clements | |
| 8707. |
The branch of Botany dealing with the distribution of plants on the earth's surface is called |
| A. | Ecology |
| B. | Phytology |
| C. | Phytogeography |
| D. | Phytosociology |
| Answer» D. Phytosociology | |
| 8708. |
The early settlers on a barren area are [NCERT 1980] |
| A. | Ferns |
| B. | Mosses |
| C. | Lichens |
| D. | Diatoms |
| Answer» D. Diatoms | |
| 8709. |
Water plants provide ....... to water animals |
| A. | \[{{O}_{2}}\]and food |
| B. | Water and \[C{{O}_{2}}\] |
| C. | Food and water |
| D. | Shelter and shade |
| Answer» B. Water and \[C{{O}_{2}}\] | |
| 8710. |
Mangrove forests are found in |
| A. | Uttar Pradesh |
| B. | Madhya Pradesh |
| C. | West Bengal |
| D. | Himachal Pradesh |
| Answer» D. Himachal Pradesh | |
| 8711. |
Mangroves are [MP PMT 2005] |
| A. | Xerophytes |
| B. | Hydrophytes |
| C. | Halophytes |
| D. | Glycophtes |
| Answer» D. Glycophtes | |
| 8712. |
The waxy surface of the floating leaves of the hydrophytes prevents [Orissa JEE 2005] |
| A. | Respiration |
| B. | Photosynthesis |
| C. | Transpiration |
| D. | Clogging of stomata |
| Answer» D. Clogging of stomata | |
| 8713. |
In succession complexicities in structure[Haryana PMT 2005] |
| A. | Drastically increasing |
| B. | Slowly increasing |
| C. | Does not increasing |
| D. | Constant |
| Answer» C. Does not increasing | |
| 8714. |
Plants near seashore is an example of [Bihar 2005] |
| A. | Halophyte |
| B. | Mesophyte |
| C. | Hydrophyte |
| D. | Submerged plant |
| Answer» B. Mesophyte | |
| 8715. |
In submerged plants |
| A. | Anaerobic respiration is a rule |
| B. | Aerobic respiration occurs by utilizing dissolved oxygen of water |
| C. | Anaerobic and aerobic respiration take place simultaneously |
| D. | None of the above |
| Answer» C. Anaerobic and aerobic respiration take place simultaneously | |
| 8716. |
Characteristic feature of mangrove plants is [HP PMT 2005] |
| A. | Vivipary |
| B. | Heterospory |
| C. | Parthenocarpy |
| D. | Apospory |
| Answer» B. Heterospory | |
| 8717. |
Rhizophora is a characteristic component of [CPMT 1982; BHU 1984; MP PMT 2004; Orissa JEE 2004] |
| A. | Marsh plants |
| B. | Swamp forests |
| C. | Mangrove vegetation |
| D. | Salt Swamp |
| Answer» D. Salt Swamp | |
| 8718. |
Mechanical tissue is best developed in [CPMT 2003] |
| A. | Hydrophytes |
| B. | Halophytes |
| C. | Xerophytes |
| D. | Mesophytes |
| Answer» D. Mesophytes | |
| 8719. |
Plants adapted to grow in shade are [CMC 2003] |
| A. | Psammophytes |
| B. | Sciophytes |
| C. | Mesophytes |
| D. | Xerophytes |
| Answer» C. Mesophytes | |
| 8720. |
Hydrophytes are characterised by [MP PMT 2003] |
| A. | Thick and large leaf |
| B. | Delicate and mucilagenous stem |
| C. | Short spinous stem |
| D. | All of the above |
| Answer» C. Short spinous stem | |
| 8721. |
A succulent xerophyte is [DPMT 2002] |
| A. | Capparis |
| B. | Calotropis |
| C. | Agave |
| D. | None of the above |
| Answer» D. None of the above | |
| 8722. |
Plants growing in saline soil/high concentration of salts are [CPMT 2002; RPMT 2002] |
| A. | Xerophytes |
| B. | Halophytes |
| C. | Heliophytes |
| D. | Hydrophytes |
| Answer» C. Heliophytes | |
| 8723. |
Root cap is absent in [RPMT 2002; Manipal 2005] |
| A. | Halophytes |
| B. | Hydrophytes |
| C. | Xerophytes |
| D. | Homophytes |
| Answer» C. Xerophytes | |
| 8724. |
Plant succession is a ............. process |
| A. | Definite |
| B. | Haphazard |
| C. | Unimportant |
| D. | None of these |
| Answer» B. Haphazard | |
| 8725. |
Plants growing in acidic soils are known as [JIPMER 2002] |
| A. | Psammophytes |
| B. | Oxalophytes |
| C. | Lithophytes |
| D. | Halophytes |
| Answer» C. Lithophytes | |
| 8726. |
A physiological xerophyte is [APMEE 2002] |
| A. | Salicornia |
| B. | Euphorbia |
| C. | Salvia |
| D. | Agave |
| Answer» B. Euphorbia | |
| 8727. |
Last stage of plant succession is [RPMT 2000] |
| A. | Ecotype |
| B. | Seral community |
| C. | Climax community |
| D. | Ecotone |
| Answer» D. Ecotone | |
| 8728. |
Plants growing on sandstone are [RPMT 2000] |
| A. | Psammophytes |
| B. | Oxylophytes |
| C. | Lithophytes |
| D. | Phanerophytes |
| Answer» D. Phanerophytes | |
| 8729. |
The primary succession in a sere is [AMU 1998] |
| A. | Sub sere |
| B. | Meso sere |
| C. | Pioneer sere |
| D. | None above |
| Answer» D. None above | |
| 8730. |
One of them is a submerged hydrophyte [CPMT 1998] |
| A. | Ceratophyllum |
| B. | Utricularia |
| C. | Vallisneria and Hydrilla |
| D. | Lemna |
| Answer» D. Lemna | |
| 8731. |
Type of plants having adaptations to check transpiration is [JIPMER 1998] |
| A. | Xerophytes |
| B. | Lithophytes |
| C. | Halophytes |
| D. | Epiphytes |
| Answer» B. Lithophytes | |
| 8732. |
The vegetation of Rajasthan is [CPMT 1996; Pb. PMT 2000; MHCET 2001, 03] |
| A. | Arctic |
| B. | Alpine |
| C. | Deciduous |
| D. | Xerophytic |
| Answer» E. | |
| 8733. |
Which one lacks both roots and stomata [RPMT 1996] |
| A. | Hydrophytes |
| B. | Mesophytes |
| C. | Hygrophytes |
| D. | Halophytes |
| Answer» B. Mesophytes | |
| 8734. |
Secondary succession occurs on |
| A. | Burnt lands |
| B. | Lumbered lands |
| C. | Cut wood lands |
| D. | All of these |
| Answer» E. | |
| 8735. |
What is wrong about xerophytes [CPMT 1994] |
| A. | Sunken stomata |
| B. | Small spiny leaves |
| C. | Thick Cuticle |
| D. | Larger number of stomata |
| Answer» E. | |
| 8736. |
Xeric environment is characterised by [CBSE PMT 1994] |
| A. | Precipitation |
| B. | Low atmospheric humidity |
| C. | Extremes of temperature |
| D. | High rate of vapourisation |
| Answer» C. Extremes of temperature | |
| 8737. |
Primary succession is development of communities on [CBSE PMT 1995] |
| A. | Newly exposed habitat |
| B. | Cleared forest area |
| C. | Freshly harvested crop field |
| D. | Pond filled after a dry season |
| Answer» B. Cleared forest area | |
| 8738. |
Succession showing changes in communities at a place is called [AMU 1997] |
| A. | Geographical succession |
| B. | Biotic succession |
| C. | Physiographic succession |
| D. | Climatic succession |
| Answer» C. Physiographic succession | |
| 8739. |
Climax vegetation of a region is generally [CPMT 1987] |
| A. | Xerophytic |
| B. | Hydrophytic |
| C. | Mesophytic |
| D. | Depends upon the climate |
| Answer» D. Depends upon the climate | |
| 8740. |
Intermediate community between pioneer and climax communities is called [AMU 1983] |
| A. | Serial Community |
| B. | Biotic Community |
| C. | Temporary Community |
| D. | Ecosere |
| Answer» B. Biotic Community | |
| 8741. |
Last stabilised community in a plant succession is known as [CPMT 1984; DPMT 2004] |
| A. | Seral Community |
| B. | Pioneer Community |
| C. | Ecosere |
| D. | Climax Community |
| Answer» E. | |
| 8742. |
Which is adapted for aquatic habit [Pb. PMT 1999; RPMT 1999] |
| A. | Aldrovenda |
| B. | Vallisneria |
| C. | Sancatia |
| D. | All of these |
| Answer» C. Sancatia | |
| 8743. |
Pneumatophore roots are present in [Pb. PMT 1999; RPMT 1999] |
| A. | Mesophytes |
| B. | Xerophytes |
| C. | Hydrophytes |
| D. | Halophytes |
| Answer» E. | |
| 8744. |
Mark the correct pair [KCET 1998] |
| A. | Plants growing in shady places - Heliophytes |
| B. | Plants growing in light - Sciophytes |
| C. | Plants growing in saline soil - Halophytes |
| D. | Roots are absent - Xerophytes |
| Answer» D. Roots are absent - Xerophytes | |
| 8745. |
Excessive aerenchyma is characteristic of [CPMT 1999] |
| A. | Hydrophytes |
| B. | Xerophytes |
| C. | Mesophytes |
| D. | Heliophytes |
| Answer» B. Xerophytes | |
| 8746. |
Plants of salty seashore wet-lands are called [MP PMT 1996] |
| A. | Halophytes |
| B. | Heliophytes |
| C. | Hydrophytes |
| D. | Saprophytes |
| Answer» B. Heliophytes | |
| 8747. |
Pneumatophores plants are found [CPMT 1999; JIPMER 2001] |
| A. | In desert |
| B. | Near river banks |
| C. | In grasslands |
| D. | On mountains |
| Answer» C. In grasslands | |
| 8748. |
Eichornia crassipes is a [MP PMT 1996] |
| A. | Desert plant |
| B. | Parasite |
| C. | Water plant |
| D. | Terrestrial plant |
| Answer» D. Terrestrial plant | |
| 8749. |
Casuarina equisetifolia is a [EAMCET 1995] |
| A. | Mesophyte |
| B. | Xerophyte |
| C. | Halophyte |
| D. | Forest epiphyte |
| Answer» C. Halophyte | |
| 8750. |
Acacia arabica is a [AFMC 1997; BVP 2000] |
| A. | Mesophyte |
| B. | Hydrophyte |
| C. | Xerophyte |
| D. | Halophyte |
| Answer» D. Halophyte | |