Subject : Biology Topic : DPP No.__ IJSO STAGE-1 DAILY PRACTICE PROBLEMS SESSION-2012 13 IIT-JEE | AIPMT | AIEEE | OLYMPIADS | KVPY | NTSE 1. DNA is : (A) Always double stranded (B) Rarely single stranded (C) Always single stranded (D) Rarely double stranded 2. Five out of twenty plants obtained by selfing a red flowered plant were having white flowers. This is an indication that plant is : (A) Homozygous (B) Heterozygous (C) Homogenous (D) Heterogenous 3. One of the following is a nucleotide : (A) (B) (C) (D) 4. A nucleoside is : (A) Base + sugar (B) Base + phosphate (C) Sugar + phosphate (D) Base + sugar + phosphate 5. Experiments in which electricity was discharged into a vessel containing hydrogen gas. Water vapour, methane, and ammonia were conducted by _______. Their results support Oparins theory on the origin of life. (A) Pasteur (B) Watson and Crick (C) Miller and Urey (D) Meselson and Stehl 6. Mutations arise due to : (A) Infection by micro-organisms (B) Abrupt changes in genes (C) Hybridization (D) Nutritional factor 7. Which one of the following produced only one type of gamete : (A) AA, aa, YYrr (B) aaBB, AABB, aabb (C) TTrrYY, ttrryy, AAbbcc (D) All correct 8. In a cross between a pure tall pea plant with green pod and a pure short plant with yellow pod, how many short plants out of 16 are expected in F 2 generation. (A) 1 (B) 4 (C) 9 (D) 3 9. How many different kinds of gametes are produced by the F 1 offspring from a cross between a pure strain of plants with yellow pea and female pure green pea plants. (A) 1 (B) 2 (C) 4 (D) 5 10. 1 : 1 : 1 : 1 ratio is obtained when : (A) Yy Rr is crossed with yyrr (B) YyRr is crossed with YYrR (C) Yy Rr is selfed (D) None of these 11. In man, sperms contain autosomes and : (A) both X and Y chromosomes (B) either X or Y chromosomes (C) only Y chromosome (D) only X chromosome 12. The contrasting pairs of characters in Mendelian crossing are called : (A) Alleles (B) Heteromorphs (C) Gene loci (D) Paramorphs 13. When a tall pea plant (TT) is crossed with dwarf plant (tt), what will be the F 2 generation ? (A) All tall plants (B) All dwarf plants (C) Both tall and dwarf plants in 1 : 1 ratio (D) Both tall and dwarf plants in 3 : 1 ratio 14. Heterozygous purple flower is crossed with recessive white flower. The progeny has the ratio : (A) All purple (B) All white (C) 50% purple and 50% white (D) 75% purple and 25% white 15. Pea plants were more suitable than cattle for Mendels experiment because : (A) There were no breeding records of cattles (B) Pea plants can be self fertilised (C) Cattle are not easy to maintain (D) All pea plants have 2X chromosomes and fewer genetic traits Genetics 01
1. DNA is :(A) Always double stranded (B) Rarely single stranded(C) Always single stranded (D) Rarely double stranded
2. Five out of twenty plants obtained by selfing a red flowered plant were having white flowers. This is anindication that plant is :(A) Homozygous (B) Heterozygous (C) Homogenous (D) Heterogenous
3. One of the following is a nucleotide :
(A) (B) (C) (D)
4. A nucleoside is :(A) Base + sugar (B) Base + phosphate(C) Sugar + phosphate (D) Base + sugar + phosphate
5. Experiments in which electricity was discharged into a vessel containing hydrogen gas. Water vapour,methane, and ammonia were conducted by _______. Their results support Oparin�s theory on the origin
of life.(A) Pasteur (B) Watson and Crick (C) Miller and Urey (D) Meselson and Stehl
6. Mutations arise due to :(A) Infection by micro-organisms (B) Abrupt changes in genes(C) Hybridization (D) Nutritional factor
7. Which one of the following produced only one type of gamete :(A) AA, aa, YYrr (B) aaBB, AABB, aabb (C) TTrrYY, ttrryy, AAbbcc (D) All correct
8. In a cross between a pure tall pea plant with green pod and a pure short plant with yellow pod, how manyshort plants out of 16 are expected in F2 generation.(A) 1 (B) 4 (C) 9 (D) 3
9. How many different kinds of gametes are produced by the F1 offspring from a cross between a pure strainof plants with yellow pea and female pure green pea plants.(A) 1 (B) 2 (C) 4 (D) 5
10. 1 : 1 : 1 : 1 ratio is obtained when :(A) Yy Rr is crossed with yyrr (B) YyRr is crossed with YYrR(C) Yy Rr is selfed (D) None of these
11. In man, sperms contain autosomes and :(A) both X and Y chromosomes (B) either X or Y chromosomes(C) only Y chromosome (D) only X chromosome
12. The contrasting pairs of characters in Mendelian crossing are called :(A) Alleles (B) Heteromorphs (C) Gene loci (D) Paramorphs
13. When a tall pea plant (TT) is crossed with dwarf plant (tt), what will be the F2 generation ?(A) All tall plants (B) All dwarf plants(C) Both tall and dwarf plants in 1 : 1 ratio (D) Both tall and dwarf plants in 3 : 1 ratio
14. Heterozygous purple flower is crossed with recessive white flower. The progeny has the ratio :(A) All purple (B) All white(C) 50% purple and 50% white (D) 75% purple and 25% white
15. Pea plants were more suitable than cattle for Mendel�s experiment because :
(A) There were no breeding records of cattles(B) Pea plants can be self fertilised(C) Cattle are not easy to maintain(D) All pea plants have 2X chromosomes and fewer genetic traits
Genetics 01
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1. The plants die due to wilting when(A) Available light is reduced to half (B) Xylem is blocked(C) A few roots are broken (D) Phloem is blocked
2. One person having blood group B requires transfusion. Blood which can be given should belong to group.(A) A and AB (B) O and A (C) O and B (D) B and AB
3. Pathway of myogenic impulse conduction is(A) SAN AVN Bundle of His Purkinje Fibres(B) SAN AVN Purkinje fibres Bundle of His(C) AVN SAN Bundle of His Purkinje fibres(D) AVN Bundle of His SAN Purkinje fibres
4. Thromboplastin is produced by(A) Damaged tissues (B) Blood platelets(C) Both blood platelets and damaged tissues (D) Prothrombin
5. Valves are not found in.(A)veins (B) Arteries (C) Heart (D) None of these
6. In the cardiac cycle, blood pressure is at a maximum when :(A) The atria are contracting during systole (B) The atria are contracting during diastole
(C) The ventricles are contracting during systole (D) The ventricles are relaxing during systole
7. Mark the false statement :(A) The principal mineral cation in the ECF is sodium.(B) Copper deficiency causes anaemia(C) Vitamin K is a antihaemorrhagic vitamin
(D) None of these
8. Which of the following process in excess causes temporary wilting ?(A) Respiration (B) Transpiration (C) Photosynthesis (D) Imbibition
9. Bundle of His is found in(A) Heart (B) Auricle (C) Ventricle (D) Sinus Vinosus
10. Which of the following has no muscular walls(A) Artery (B) Arteriole (C) Capillary (D) Vein
11. Both erythrocytes and Leucocytes are formed in the(A) Bone marrow (B) Thymus (C) Arterial walls (D) Lymph nodes
12. The advantage of R.B.C�s being discoidal is ,
(A) To increases surface area (B) to pack them easily (C) to fit in capillaries
(D) none
13. Most of the plasma is
(A) Protein (B) Salt (C) Gases (D) Water
14. One of the following mammalian cells cannot respire aerobically which one ?
6. Auxin causes a plant shoot to bend toward light by causing cells :(A) To grow less rapidly on the light side of the shoot(B) To grow more rapidly on the light side on the shoot(C) In the centre of the shoot to differentiate unevenly(D) To grow more rapidly on the dark side of the shoot
7. Which of the following would not result from the release of adrenalin (epinephrine) ?(A) Decreased blood flow to skin (B) Increased oxygen consumption(C) Rise in blood pressure (D) None of these
8. Nerve impulse initiates with the movements of :(A) K+ (B) Mg++ (C) Ca++ (D) Na+
9. The cerebellum is concerned with�(A) co�ordination of muscular movements(B) perception(C) memory (D) vision
11. Parturition is controlled by :(A) Oxytocin (B) FSH (C) LH (D) androgen
12. Metabolic rate is being controlled by(A) liver (B) thyroid (C) pituitary (D) pancreas
13. Hormones influence body parts for bringing about(A) proper growth (B) co � ordination
(C) proper functioning of body parts (D) all of the above
14. Deficiency of thyroxine / hypothyroidism in adults results in(A) diabetes mellitus (B) diabetes insipidus (C) myxodema (D) exophthalmic goitre
Control & Coordination in Animals & Plants 03
15. Which of the following hormone is responsible for the emotional state as fear, anger, pain & cause rise of bloodpressure & rate of heart beat ?(A) Insulin (B) Adrenaline (C) Progesteron (D) Thyroxine
16. Endocrine glands are those which put their secretions directly into(A) ducts (B) blood (C) both (D) none of the above
17. Which one is not secreted by pituitary ?(A) Thyroxine (B) FSH (C) GH (D) ACTH
18. Exophthalmic goitre is caused due to(A) hypersecretion of thyrocalcitonin (B) hyposecretion of thyrocalcitonin(C) hypersecretion of thyroxine (D) hyposecretion of thyroxine
19. If a person happens to take large amount of water, the amount of ADH in blood will(A) Increase (B) Decrease(C) First increase then decrease (D) None of these
20. Which is controlling gland for all endocrine glands ?(A) Adrenal (B) Thymus (C) Pitutary gland (D) Pancreas
1. Match the columnsColumn - 1 Column - 2A. BCG i. Alexender FlemmingB. Germ Theory of diseases ii. TyphoidC. Salmonella iii. TuberculosisD. Penicillin iv. Robert Koch(A) A i, B ii, C iv, D iii (B) A iii, B iv, C ii, D i (C) A iv , B iii, C ii, D i (D) A iii, B ii, C iv, D i
2. The human Immunodeficiency Virus is considered deadly because :(A) It destroys the nervous system(B) It increases susceptibility to attack by other pathogens(C) It causes severe bleeding(D) It stops respiration
3. Which of the following is carrier of dengue :(A) Aedes (B) Culex (C) Anopheles (D) None of the above
4. Vaccine is not available for which of the following diseases ?
(A) T.B. (B) Tetanus (C) Malaria (D) Polio5. Life of the memory cells to immune system is :
(A) A few days (B) A few weeks(C) A few hours (D) A few month to whole life
6. Passive immunity is provided through :(A) Exogenous supply of antigens (B) Exogenous supply of antibodies(C) Endogenous supply of antigens (D) Endogenous supply of antibodies
7. Interferon is protein that :(A) Inactivates a virus(B) Protects unattacked cells from virus(C) Prevents viruses from taking over the cellular machinary(D) All the above
8. DPT is a vaccine for(A) Diphtheria, polio and tetanus(B) Diarrhoea, polio and tetanus(C) Diphtheria, pertusis and tetanus(D) Diphtheria, pertusis and tuberculosis
9. Jaundice is a disease of
(A) Kidney (B) Liver (C) Pancreas (D) Duodenum
10. A disease due to allergic reaction is :(A) Goitre (B) Hay fever (C) Enteric fever (D) Skin fever
11. The familiar disease Amoebiasis is caused by(A) Entamoeba histolytica (B) Taenia solium(C) Ascaris lumbricoides (D) Wuchereria bancrofti
13. In order to prevent spreading of a communicable disease like cholera it is necessary to(A) Control the population of mosquitoes(B) Dry up all ponds in the neighbourhood(C) Educate people to drink boiled water and not to eat exposed food(D) All of the above
Diseases 04
14. A viral disease causing painful swelling of parotid gland is(A) mumps (B) measles (C) chicken pox (D) rabies
15. Rabies caused by bite of a dog is a means of spread of the disease by -(A) Direct transmission (B) Indirect transmission (C) None of the above (D) Both of the above
16. Many children in our country suffer from Kwashiorkar. This can be prevented by giving children food rich in
17. Vitamin A is necessary for the synthesis of(A) haemoglobin (B) visual pigment (C) melanin (D) R.N.A.
18. Vaccines have been produced for protection against dreadly disease. Check the combination and findout which is mismatched.(A) Polio - OPV
(B) Smallpox - MMR
(C) Whoping Cough - DPT
(D) Tuberculosis - BCG19. Which of the following is a chronic disease ?
(A) Cold (B) Asthma (C) Diabetes (D) Both B and C
20. The Antigen present in pathogen is(A) A specific protein Involved in metabolism(B) Polysaccharide synthesized by it in the host(C) A specific protein or polysaccharide present on its coat(D) A and B both
2. Temperature in scrotum necessary for sperm formation should be :(A) 2ºC above body temperature (B) 2ºC below body temperature
(C) 4ºC above body temperature (D) 4ºC below body temperature
3. The hollow ball of cells formed from cleavage is called the :(A) Blastomere (B) Morula (C) Blastula (D) Blastocoel
4. The sperm and the egg make different contributions to the zygote. Which statement about their contributionsis false ?(A) The sperm contributions most of the mitochondria(B) The egg contributes most of the cytoplasm(C) Both the sperm and the egg contribute a haploid nucleus(D) All of the above are true
5. Which statement is not true ?(A) Cleistogamous flowers are underground closed flowers(B) The embryo sac of the ovule contain the egg(C) Double fertilization is found in both pinus and wheat(D) By cross pollination, the developed progeny is strong and more healthy
6. The release of ovum from Graffian follicles takes place during ..... day :
(A) 12th - 14th (B) 2th - 10th
(C) last 2 days of menstrual cycle (D) 8th - 10th
7. Amniocentesis is a process to(A) determine any disease of heart (B) determine hereditary disease of embryo(C) know about diseases of brain (D) all of these are correct
8. Parturition is controlled by :(A) Oxytocin (B) Relaxin (C) LH (D) Both A & B
9. Microscopic structure in a flower that contains the polar nuclei is :(A) Pollen tube (B) pollen sac (C) embryo sacs (D) male-gametophyte
10. A pinch of yeast was added to 10% glucose solution and was left overnight in a warm place. Next day, adrop from the suspension was placed on the slide and was examined under microscope.Which of the following figures represent the expected result :
(1) (2) (3) (4)
(A) (1) (B) (2) (C) (3) (D) (4)
11. Which of the following are correct match :(A) Hydrophily � Pollination by wind (B) Chiropterophily � Pollination by bats
(C) Anemophily � Pollination by water (D) Ornithophily � Pollination by insect
