Year: 2021

, Biodiversity The term ‘biodiversity’ refers to ‘the variety and variability among living organisms and the ecological complexes in which they occur’. If you observe a patch of forest, you may find a wide variety of plant and animal life. …

The biomass can be used to [CBSE PMT 1992] (a)   Obtain alcohol                     (b)   Generate biogas (c)   Generate producer gas     (d)   All of these The economically friendly measure to conserve solar energy is [CBSE PMT 1999] (a)   Sugarcane plantation        (b)   Energy …

  The energy obtained from biological sources is called bioenergy. Bioenergy is the use of biomass (organic matter) to produce electricity, transportation fuels or chemicals. Bioenergy sources include agriculture and forestry residues and the organic components of municipal and industrial …

Maximum utilization of the techniques of biotechnology has been made in the field of              (a)   Agriculture                           (b)   Medicines              (c)   Industries                             (d)   Biogas production By the use of biotechnology, in which bacteria production of B2 vitamins has been increased …

  Study of use of living organisms and the substances produced due to their activities is called biotechnology. Mostly micro-organisms are used in many industries as alcohol, enzymes, vaccines, vitamins, antibiotics, organic acids, etc. So biotechnology is controlled use of …

Which is more suitable for germplasm collection (a)   Centre of production         (b)   Homelands (c)   Tropical areas                      (d)   Temperate areas Tropical forests are being lost at the annual rate of (a)   11 million ha/yr                  (b)   110 million ha/yr (c)   1 …

  Protection of conservation of genetic resources (i.e., all the various types of genes present in the different varieties of a species which have been, are being or likely to be used in the improvement of domesticated plants) is called …

?  Sporeine developed in Germany is first commercial bioinsecticide obtained from Bacillus thuringenesis. ?  Red squill (Urginea maritima) produce a raticide harmles to other animals. ?  Juvenile Hormone : spray prevents larvae to metamorphose. They die without reproduction. ?  Male …

Types of manures are (a)   Farmyard, composited and green (b)   Green and farmyard (c)   Green and composited (d)   Farmyard and composited BGA is chiefly used as fertilizer in                                                                         [MP PMT 1995; Pb. PMT 1998] (a)   Wheat                                    (b)   Paddy (c)   …

  Fertilizers of biological origin are called biofertilizers. These provide the essential elements to the soil and hence maintain or increase the soil fertility. Use of these biological fertilizers is safe both economically as well as ecologically. There are two …

.         Cereals, pulses, fruits, vegetables and nuts Broom corn is obtained from (a)   Panicum                                (b)   Borassus (c)   Attalia                                    (d)   None of the above Whose fruits are narcotic in nature (a)   Jatropha                                 (b)   Opium (c)   …

Which of the following is called “Dhaan ka Katora” (a)   Gwalior                                  (b)   Indore (c)   Chhattisgarh                        (d)   Rewa Trigonella foenum graecum belongs to family (a)   Solanaceae                           (b)   Apocyanaceae (c)   Papilionaceae                      (d)   None of the above Mud-ball technique for rice cultivation has …

(c) Belladona drug is obtained from the leaves of Atropa belladona plant. In leaves contains several alkaloids which is atropine, used to dilate pupil of the eye. (a) Withania somnifera is the botanical name of Ashwagandha belong to family salanceae. …

  Cereals : These are the members of family Gramineae and grown for their edible seeds. They are characterised by the presence of caryopsis a type of fruit in which seed wall becomes fused with the ovary to form the …

Process of hybridization is difficult because of              (a)   Susceptibility to mutations              (b)   Incompatibility and sterility              (c)   Selection of suitable parents and hybrids              (d)   All the above The method of growing micro-organisms as a thin layer on …

  After the evolution of man and from the time of his origin, he has been basically a hunter of animals and gatherer of plant products for his food. He lived in small groups, following a nomadic way of life. …

              Opium‘ is an extract of (a)   Cannabis sativa plant (b)   Cocoa plant (c)   Unripe fruit of poppy plant (d)   None of the above ‘Charas‘ is a product of (a)   Cannabis sativa                   (b)   Cannabis …

‘Chicken pox‘ is caused by [CBSE PMT 1992]              (a)   Adeno virus                          (b)   Varicella virus              (c)   SV–40 virus                          (d)   Bacteriophage T-2 Out of the following one disease is caused by virus                                                                                 [DPMT 1974; CPMT 1979]              (a)   Malaria                                  …

n Addison’s disease is characterised by [CBSE PMT 1991]              (a)   Elongation of limb bones and jaw becomes broad              (b)   Hypertension and enlargement of thyroid              (c)   Loss of appetite, vomitting, muscular weakness, lowering of BMR, blood pressure and …

  Diseases are classified into three main types : Communicable diseases, non-communicable and genetic disorders. Communicable Diseases Meaning : The diseases which are caused by pathogens (viruses and living organisms) and readily spread from the infected to the healthy persons …

Generally the number of vaccinations are …….. to get complete immunity              (a)   2 to 3                                      (b)   2 only              (c)   3 only                                     (d)   4 only The cells which produce the antibodies by stimulating the B–cells are known as              …

                General Introduction   Pesticide is (a)   Food grain preservative   (b)   Fungus killer (c)   Insect killer                           (d)   (b) and (c) both Mostly pesticides are (a)   Useful                                     (b)   Harmful (c)   Beneficial                              (d)   All the …

            Which of the following pesticide is of lipophilic nature (a)   2,  4 – D                                  (b)   DDT (c)  BHC                                         (d)   All the above Most of the insecticides affect on [MP PMT 2000] (a)   CNS                                         (b)   …

    Since the dawn of human civilization, man has been trying to improve the agriculture. Modern agriculture employs a number of chemicals for enhancing crop yield and protecting the same. Synthetic fertilizers are added to replenish the various nutrients …

            Huskies are (a)   Dogs (b)  Yak (c)   Thick furred dogs used by Eskimos (d)   Nothing A milch breed of cow is (a)   Haryana                                 (b)   Malvi (c)   Kankrej                                  (d)   Sahiwal Buffalo is better than cow …

Honey mainly consist of monosaccharides Both the chambers contain about 7 rectangular wooden frames called comb frames arranged vertically. The vertical frames are filled with comb foundation sheet.  These sheets are made of wax and contain hexagonal imprints. They are …

    The rearing of animals for specific purposes is called domestication, and such animals are called domestic animals. Domestication of animals started during the ‘hunting and gathering phase’ of human civilization. Man domesticates a variety of animals for food …