Showing posts with label Biology. Show all posts
Showing posts with label Biology. Show all posts

Monday, May 9, 2011

biology online free


biology online free

biology online free
pre medical biology online  free Test
Free Biology Online Practice Test
pre medical biology online objective questions
coaching for pre med test
Check your preparation for biology courses including Botany and Zoology
Pre med online test practice for pre medical colleges

Zoology

1. In malaria, the product released by mosquito into blood that causes chill and fever, is called:
(a) Heamatin
(b) Schuffner’s dots
(c) Haemozoin
(d) Haemotoxin
Ans. (c)
2. In Amoeba, the contractile vacuole is present:
(a) Near the trailing end
(b) Near the advancing end
(c) At the middle of the body
(d) Any where inside the body
Ans. (a)
3. The trisomy for 21st chromosome is called:
(a) Down’s syndrome
(b) Turner’s syndrome
(c) Sickle cell anaemia
(d) Klinefelter’s syndrome
Ans. (a)
4. ‘Mammalian thymus’ is mainly concerned with:
(a) Regulation of body temperature
(b) Regulation of body growth
(c) Immunological functions
(d) Secretion of thyrotropin
Ans. (c)
5. Which of the following is the largest gland in an adult man?
(a) Thymus
(b) Liver
(c) Thyroid
(d) Pancreas
Ans. (b)
6. In Pheretima, septa are absent between which segments?
(a) 3/4 and 9/10
(b) 4/5 and 8/9
(c) 5/6 and 7/8
(d) 7/8 and 6/7
Ans. (a)
7. During emergency which of the following hormone is secreted?
(a) Aldosterone
(b) Thyroxine
(c) Adrenaline
(d) Calcitonin
Ans. (c)
8. In which of the following animals, respiration occurs without any respiratory organ?
(a) Frog
(b) Fish
(c) Cockroach
(d) Earthworm
Ans. (d)
9. In cockroach, larval and nymphal characters are maintained by:
(a) Ecdysone
(b) Salivary glands
(c) Parotid gland
(d) Juvenile hormone
Ans. (d)
10. Which of the following is a transparent tissue?
(a) Tendon
(b) Fibrous cartilage
(c) Hyaline cartilage
(d) All of these
Ans. (c)
11. Rh factor is present in:
(a) All vertebrates
(b) All mammals
(c) All reptiles
(d) Man and rhesus monkey only
Ans. (d)
12. In rabbit, end of a long bone is connected to another by:
(a) Tendon
(b) Ligaments
(c) Muscle
(d) Cartilage
Ans. (b)
13. Which of the following cell type is capable of giving rise to other cell types in sponges?
(a) Thesocytes
(b) Pinacocytes
(c) Cnidocytes
(d) Archaeocytes
Ans. (d)
14. Thigmotaxis is not shown by:
(a) Paramecium
(b) Amoeba
(c) Ascaris
(d) Hydra
Ans. (c)
15. Which is correctly matched?
(a) Apiculture—honey bee
(b) Pisciculture—silk moth
(c) Sericulture—fish
(d) Aquaculture—mosquito
Ans. (a)
16. Changes that allow the conversion of larva into adult, is called:
(a) Metagenesis
(b) Alternation
(c) Metamorphosis
(d) Metastasis
Ans. (c)
17. Which of the following is secreted by mast cell?
(a) Histamine
(b) Heparin
(c) Serotonin
(d) All of these
Ans. (d)
18. 5th cranial nerve of frog is called:
(a) Optic nerve
(b) Vagus
(c) Trigeminal
(d) Opthalmic
Ans. (c)
19. Animals having a built in thermostat to maintain constant body temperature are known as:
(a) biothermic
(b) poikilothermic
(c) oligothermic
(d) homeothermic
Ans. (d)
20. In earthworm, neurons are:
(a) Motor
(b) Associated
(c) Sensory
(d) All of these
Ans. (d)
21. In sex linkage, the specialty is:
(a) Atavism
(b) Criss-cross inheritance
(c) Reversion
(d) Gene flow
Ans. (b)
22. Vitamin-D is synthesized in skin by the action of sunlight on:
(a) Cholesterol
(b) 7-hydroxy cholesterol
(c) Cephalin cholesterol
(d) All of the above
Ans. (b)
23. The intermediate host of Schistosoma4s:
(a) Snail
(b) Mosquito
(c) Housefly
(d) Sheep
Ans. (a)
24. The islets of Langerhans are found in:
(a) Pancreas
(b) Stomach
(c) Liver
(d) Alimentary canal
Ans. (a)
25. In Klinefelter’s syndrome, the sex chromosome compliment is
(a) 22 A + XXY
(b) 22 A + XO
(c) 22 A + XY
(d) 22 A + XX
Ans. (a)

Botany

26. Lichen is the pioneer vegetation on which succession?
(a) Hydrosere
(b) Lithosere
(c) Psammosere
(d) Xerosere
Ans. (b)
27. Law of limiting factor was given by:
(a) Leibig
(b) Blackman
(c) Calvin
(d) Arnon
Ans. (b)
28. In Pinus, male cone bears a large number of:
(a) Ligules
(b) Anthers
(c) Micro-sporophylls
(d) Mega-sporophylls
Ans. (c)
29. Insectivorous plants grow in soil:
(a) Rich in nitrates
(b) Rich in phosphates
(c) Deficient in nitrates
(d) Rich in calcium
Ans. (c)
30. Induction of flowering by low temperature treatment is
(a) Vernalisation
(b) Cryobiology
(c) Photoperiodism
(d) Prunning
Ans. (a)
31. Decomposers are:
(a) autotrophs
(b) autoheterotrophs
(c) organotrophs
(d) heterotrophs
Ans. (c)
32. ‘Club moss’ belongs to:
(a) Algae
(b) Ptridophyta
(c) Fungi
(d) Bryophyta
Ans. (b)
33. Cleavage polyembryony occurs in:
(a) Pinus
(b) Mini Cycas
(c) Gycas
(d) Ephedra
Ans. (a)
34. Edible part of mushroom is:
(a) Basidiocarp
(b) Secondary mycelium
(c) Primary mycelium
(d) Tertiary mycelium
Ans. (a)
35. Which is the major crop in Asia?
(a) Rice
(b) Sugarcane
(c) Jowar
(d) Millet
Ans. (a)
36. Most nutritious among the following is:
(a) Wheat
(b) Maize
(c) Bajra
(d) Rice
Ans. (c)
37. Which of the following plant product is the hardest?
(a) Lignin
(b) Cutin
(c) Suberin
(d) Sporopollenin
Ans. (d)
38. ‘Ruminate endosperm’ is found in:
(a) Cruciferae
(b) Asteraceae
(c) Euphorbiaceae
(d) Annonaceae
Ans. (d)
39. Guttation is due to:
(a) Transpiration
(b) Root pressure
(c) Osmosis
(d) Diffusion
Ans. (b)
40. The following is used to get desired breed of plants.
(a) Tissue culture
(b) Genetic engineering
(c) Inbreeding
(d) Ikebana
Ans. (b)
41. For production of haploids, we culture:
(a) Shoot tip
(b) Anther
(c) Root tip
(d) None of these
Ans. (b)
42. Calyptra is derived from:
(a) Archegonia
(b) Capsule
(c) Antheridia
(d) Columella
Ans. (a)
43. Late blight of potato is caused by:
(a) Ustilago
(b) Pseudomonas
(c) Phytophthorc nfestans
(d) Colletotricum falcatum
Ans. (c)
44. ‘Clamp connection’ are observed in:
(a) Basidiomycetes
(b) Zygomycetes
(c) Ascomycetes
(d) Oomycetes
Ans. (a)
45. Leaf abscission is caused by:
(a) ABA
(b) cytokinin
(c) auxin
(d) gibberellin
Ans. (a)
46. What is the main cause for the extinction of some species in tropical forest?
(a) Deforestation
(b) Afforestation
(c) Pollution
(d) Soil erosion
Ans. (a)
47. Wilting of plant is due to:
(a) Blockage of phloem
(b) Blockage of xylem
(c) When some root and phloem are removed
(d) Tracheid is blocked
Ans. (b)
48. Most accepted theory for ascent of sap is:
(a) Capillarity theory
(b) Root pressure theory
(c) Pulsation theory
(d) Transpiration pull
Ans. (d)
49. Which enzyme converts glucose into alcohol?
(a) Zymase
(b) Diastase
(c) Invertase
(d) Lipase
Ans. (a)
50. Crop rotation helps in:
(a) Increase soil fertility
(b) Decrease soil erosion
(c) Decrease soil fertility
(d) Decrease water loss
Ans. (a)

staff nurse model solved papers: Zoology Biology


staff nurse model solved papers: Zoology Biology

staff nurse model solved papers: Zoology Biology
SAMPLE SOLVED PAPER OF STAFF NURSE IN HEALTH SERVICES DEPT
SOLVED ESI STAFF NURSE SOLVED QUESTION PAPER
staff nurse modal test paper solved dsssb exam
1. Whenever a non-sense codon formed in a polypeptide chain then it leads to:
(a) Addition of some specific thymine and cytosine bases
(b) Addition of some specific guanine and cytosine bases
(c) Termination of polypeptide chain
(d) Addition of some specific guanine and adenine bases
Ans. (c)
2. Direction of replication in mitochondrial DNA will be:
(a) Bidirectional
(b) Unidirectional
(c) Replication absent
(d) Both (a) and (b)
Ans. (b)
3. Pepsin is activated by:
(a) Pepsin
(b) Chymotrypsin
(c) Hydrochloric acid
(d) Trypsin
Ans. (c)
4. The m-RNA is directly available translation without processing in:
(a) Green algae
(b) Bacteria
(c) Polysiphonia
(d) Chara
Ans. (b)
5. Which of the following statement is correct?
(a) Maximum DNA is present in cytoplasm than in nucleus
(b) Maximum RNA is present in nucleus than in cytoplasm
(C) Maximum DNA present in nucleus than in cytoplasm
(d) Both (b) and (c)
Ans. (c)
6. Which-of following is example of steroid hormone?
(a) Adrenaline
(b) Corticotrophin
(c) Insulin
(d) Testosterone
Ans. (d)
7. M and N blood groups are of importance in:
(a) blood transfusion
(b) Medico legal tests
(c) Both (a) and (b)
(d) None of the above
Ans. (b)
8. The pace-setter in the heart is called:
(a) Purkinje fibres
(b) Sino arterial node
(c) Papillary muscle
(d) Artio-ventricular node (AVN)
Ans. (d)
9 What are the most diversed molecules m the cell?
(a) Lipids
(b) Proteins
(c) Minerals
(d) Carbohydrates
Ans. (b)
10. Kingdom Protista can be defined as:
(a) Microscopic multicultural organisms with – one or many nuclel, they don’t form embryo
(b) Microscopic, unicellular organisms with one or more nuclei, they do not form embryo
(c) Macroscopic, multi- unicellular organisms having only a large nucleus and no embryo formation in them
(d) none of the above.
Ans. (b)
11. A gorilla like man has huge hands and legs this – is due to abnormal secretion of:
(a) Pituitary FSH
(b) Pituitary LII
(c) Pituitary Gil
(d) Thyroid
Ans. (c)
12. Chloragogen cells serve for:
(a) Respiration
(b) Excretion
(c) Storage of glycogen and fat
(d) Both (b) and (c)
Ans. (d)
13. Myxotrophic nutrition is found in:
(a) Mango
(b) Euglena
(c) Cara
(d) All Protozoa
Ans. (b)
14. Formation of embryo sac from diploid cells of ovule is known as:
(a) Apogamy
(b) Apospory
(c) Amphimtxis
(d) Apimixis
Ans. (b)
15. Cytoplasm of Amoeba proteus not contain
(a) Ectoplasm and endoplasm
(b) Endoplasm and mitochondria
(c) ER and ribosomes
(d) Mesosomes
Ans. (d)
16. In the body blood clotting is prevented by:
(a) Heparin
(b) Prothrombin
(c) Carbonic acid
(d) Starch
Ans. (a)
17. Fermentation is general term for the:
(a) Anaerobic degeneration of glucose or other organic nutrients to obtain energy
(b) An -aerobic degeneration of protein
(c) Formation of formic- acid
(d) Both (a) and (b)
Ans. (a)
18. Function of SSE proteins during DNA replication is:
(a) Unwinding of DNA
(b) Denaturation of DNA
(c) Formation of RNA strands
(d) Stabilizing separated DNA strands
Ans. (d)
19. The net result of inversion is
(a) Gain of some inverted genes
(b) Neither a gain nor a loss in genes
(c) Loss of some genes
(d) Transfer of genes to non-homologous chromosome.
Ans. (b)
20. Amniotic egg is present:
(a) Hydra
(b) Reptiles
(c) Mammals
(d) Both (b) and (c)
Ans. (d)
21. Building block of DNA are:
(a) Nucleosomes
(b) Nuclesides
(c) Nucleic acid
(d) Nucleotides
Ans. (d)
22. The receptor for water soluble hormones are located on target cell surface then- for fat soluble hormone receptors. are:
(a) SV also on cell surface
(b) In cytosol
(c) Both (a) and (b)
(d) Does not have cell receptor
Ans. (b)
23. There is one difference between DNA replication of prokaryotes and eukaryotes:
(a) Eukaryotes contain DNA pol III while it is absent in prokaryotes
(b) The rate of replication fork movement in eukaryotes is lower then prokaryotes
(c) Many origin of replication present in eukaryotes while only one in prokaryotes
(d) Both (b) and (c)
Ans. (d)
24. In micturition
(a) Ureter contracts
(b) Ureter relaxes
(C) Urethra relaxes
(d) Urethra contracts
Ans. (c)
25. Maximum peptidoglycan is present in which of the following cell?
(a) Gram negative bacterial cell
(b) Gram positive bacterial cell
(c) PPLO
(d) PSTV
Ans. (b)
26. Blood platelets are the source of:
(a) Fibrogen
(b) Fibrinogen
(c) Thromboplastin
(d) Ca2+
Ans. (c)
27. In man the largest vertebra is:
(a) Caudal
(b) Sacral
(c) Lumber
(d) Cervical
Ans. (c)
28. Which of the following microtubule is mainly responsible for chromosome movement during mitotic division?
(a) Astral microtubules
(b) Polar microtubules
(c) Kinetochore microtubule
(d) Kinetochore
Ans. (c)
29. Earthworm appear brown due to the presence of:
(a) Chloragogen cells
(b) Chloragosomes
(c) Porphyrin
(d) Porin
Ans. (c)
30. Some human babies show “Cri-du-chat” syndrome due to:
(a) Pseudo dominance
(b) Dominance
(c) Duplication
(d) Translocation
Ans. (a)
31. Bacteria do not contain enzyme:
(a) Hexokinase
(b) Fructose-1, 6 bisphosrhate
(c) Fructose 2, 6 bisphosrhate
(d) Both (a) and (c)
Ans. (c)
32. Thiamine Pyrophosphate plays important role in the cleavage of bonds:
(a) Carboxylic group
(b) Carbonyl group
(c) Aldehydes group
(d) Keto group
Ans. (b)
33. The pyruvate dehydrogenase complex vertebrates is strongly inhibited by:
(a) Ample of ATP, Co-A and NAD+
(b) Long chain fatty acids
(c) ATP and acetyl Co-A
(d) AMP, Co-A, NAD+
Ans. (d)
34. Nourishment in Trypnasoma is:
(a) Autotrophy
(b) Chemotrophy
(c) Osmotrophy
(d) Both (a) and (b)
Ans. (c)
35. Cross over products are the result of:
(a) Crossing over
(b) Duplication
(c) Replication
(d) Both (b) and (c)
Ans. (a)
36. Tay sach’s disease is due to deficiency of enzyme:
(a) ?-N-acetyIhexosaminidase
(b) Tyrosinase
(c) Hexokinase
(d) Glucose-6-phosphate dehydrogenate
Ans. (a)
37. Parkinson disease is due to deficiency of:
(a) Acetyl chlorine
(b) Serotonin
(c) Dopamine
(d) Tyrosine
Ans. (c)
38. Different proteins that catalyze the same reaction are called:
(a) Homoprotein
(b) Alloproteins
(c) Alloenzyme
(d) Isozymes
Ans. (d)
39. Chondriods are also Known as:
(a) Mitochondria
(b) Mesosornes
(c) Spherosomes
(d) Peroxisomes
Ans. (b)
40. Each okazaki fragment in bacteria contains nucleotides approximately:
(a) 1000 to 2000
(b) 12100 to 120,000
(c) 5-10
(d) 150-200
Ans. (a)
41. Which of the following statement is not correct?
(a) The plasma membrane of bacteria shows fluid mosaic pattern
(b) Trans membrane proteins act as carriers or permeate to carry on selective transportation of nutrients
transportation
(c) Bacterial plasma membrane provides a specific sit& at which the single circular chromosome is attached
(d) All statement are correct
Ans. (d)
42. Exchange of chromosomal parts between two non-homologous chromosomes is known as:
(a) Crossing over
(b) Reciprocal translocation
(c) Exchange
(d) Both (a) and (c)
Ans. (b)
43. During binary fission Amoeba prophase stage shows following character:
(a) Amoeba becomes elongated and nuclear membrane does not disappear
(b) Amoeba becomes globular and chromosomes show pairing
(c) Amoeba becomes rounded and unclear membrane also disappear
(d) None of the above
Ans. (c)
44. Haversian canals are formed by the active division of:
(a) germinal-epithelium
(b) peritoneum
(c) ciliated columnar epithelium
(d) corpora cavernosa
Ans. (a)
45. Lathyrism, a disease caused by consumption of khesridal is characterized by:
(a) Retardation of body growth precious puberty and real dysfunctions.
(b) Reproductive failure, susceptibility to diabetes
(c) Mental retardation, failure of reproduction.
(d) Thinning of collagen fibres and fibrils and gross skeletal deformation
Ans. (d)
46. Which of the following is not a granulocyte?
(a) Lymphocyte
(b) Eosinophils
(c) Basophil
(d) Neutrophil
Ans. (a)
47. Lactoflavin (sensitizer) found in:
(a) Eye spot
(b) Paraflagellar body
(c) Golgi bodies
(d) Mitochondria
Ans. (b)
48. Which amino acid have the capability to absorb light at 280 nm?
(a) Glycine
(b) Cysteine
(c) Leucine
(d) Tryptophan
Ans. (d)
49. The cyanobacteria secrete peptides that cause the formation of hepatic tumour:
(a) Microcystins and nodularins
(b) Pyroglutamyl
(c) Glutathione
(d) Ghenyl isothiocyanate
Ans. (a)
50. Pellagra is caused by the deficiency of:
(a) Ascorbic acid
(b) folic acid
(c) Niacin
(d) Riboflavin
Ans. (c)

zoology for medical entrance Exam


zoology for medical entrance Exam

zoology for medical entrance Exam
Zoology For Medical Entrance Exams Online Practice Test
Solved Paper – Zoology – BHU Medical Entrance Exam
MCQ in Zoology for Medical entrance examination Zoology
1. The first heart sound is produced when:
(a) Systole begins
(b) Diastole begins
(c) Semilunar valve closed
(d) Bicuspid and tricuspid valve close quickly
Ans. (d)
2. The sequence of ear ossicles of vertebrates starting from tympanum is:
(a) Malleus, incus and stapes
(b) Stapes, incus and malleus
(c) Incus, stapes and malleus
(d) Incus, malleus and stapes
Ans. (a)
3. At high altitude, the RBCs in human blood:
(a) Increase in number
(b) Decrease in number
(c) Increase in size
(d) Decrease in size
Ans. (a)
4. Which of the following changes for man in the course of evolution, is probably useless?
(a) Development of opposable thumb
(b) Loss of tail
(c) Development of being erect
(d) Development of cranial capacity
Ans. (b)
5. The endothelium of blood vessel is composed of:
(a) Squamous epithelium
(b) Cuboids epithelium
(c) Columnar epithelium
(d) Ciliated epithelium
Ans. (a)
6. Bilirubin and bilivirdin are:
(a) Bile salts
(b) Bile pigments
(c) Bile juices
(d) Bile enzymes
Ans. (b)
7. Homoeothermic animals are
(a) Pigeon and toad
(b) Pigeon and rabbit
(c) Toad and rabbit
(d) Lizard and pigeon
Ans. (b)
8. In frog, mesorchium is a thin fold of membrane extending between
(a) Two testes
(c) Liver to testes
(b) Two kidneys
(d) Kidney to testes
Ans. (a)
9. Piercing and sticking mouth parts are found in:
(a) locust
(b) Butterfly
(c) Mosquito
(d) House fly
Ans. (c)
10. Monogamic ratite bird is
(a) Ostrich
(b) Pigeon
(c) Emu
(d) Kite
Ans. (c)
11. Primary consumer of a biotic community is:
(a) Plant
(b) Herbivore
(c) Carnivore
(d) Decomposer
Ans. (b)
12. Which of the following teeth are lophodont?
(a) Premolar and molar
(b) Premolar and incisor
(c) Incisor and canine
(d) Canine and premolar
Ans. (a)
13. Heparin is formed by
(a) Kidney cells
(c) Liver cells
(b) Blood cells
(d) Bone marrow
Ans. (c)
14. Characteristic feature of fishes is
(a) Tail and venous heart
(b) Venous heart and gills
(c) Epidermal scales and tail
(d) Epidermal scales and gills ‘
Ans. (b)
15. The term protoplasm was given by:
(a) Fischer
(b) Purkinje
(c) Dujardin
(d) Brown
Ans. (b)
16. The oxidative breakdown of respiratory substrates with the help of oxygen is termed as:
(a) Fermentation
(b) Combustion
(c) Anaerobic respiration
(d) Aerobic respiration
Ans. (d)
17. Excretion in Amoeba occurs through:
(a) Rhizopodia
(b) Contractile vacuole
(c) Plasma membrane
(d) Mitochondria
Ans. (c)
18. Fats and oils are:
(a) Glycerol and trialcohols
(b) Glycerol and essential oils
(c) Esters and aromatic alcohol
(d) Triglycerides of long chain of fatty acid
Ans. (d)
19. Cytochrome is found in:
(a) Mitochondrial matrix
(b) Outer membrane of mitochondria.
(c) Cristae of mitochondria
(d) Per mitochondrial space
Ans. (c)
20. Formation of bivalent, during, meiosis, occurs in:
(a) Zygotene
(b) Diplotene
(c) Leptotene
(d) Pachytene
Ans. (a)
21. A non-parasitic animal is:
(a) Plasmodium
(b) Leech
(c) Tape worm
(d) Sea anemone
Ans. (d)
22. The nuclease enzyme begins its attack from free end of a polynucleotide is
(a) Kinase
(b) Exonuclease
(c) Polymerase
(d) Endonuclease
Ans. (b)
23. The opening of spermathecae in earthworm are found in:
(a) 6, 7, 8 and 9 segments ventrolaterally
(b) 5, 6, 7 and 8 segments ventrally
(c) 10, 11, 12 and 13 segments laterally
(d) 4, 5, 6 and 7 segments dorsally
Ans. (a)
24. Glaucoma disease occurs:
(a) Due to uneven curvature f cornea
(b) Opaque lenses
(c) Lens destroyed
(d) Schema’s canal is blocked
Ans. (d)
25. Ichthyophis is a member of:
(a) Reptilian
(b) Amphibian
(c) Ayes
(d) Mammals
Ans. (b)
26. Hermit crab and sea anemone relationship is:
(a) Mutualism
(b) Parasitism
(c) Commensalisms
(d) Symbiotism
Ans. (c)
27 Mammalian kidneys is:
(a) Pronephros
(b) Epinephros
(c) Mesonephros
(d) Metanephros
Ans. (d)
28. The function of epiphysis is:
(a) Protect the bone
(b) Growth of bone
(c) Check the growth of bone
(d) all of the above
Ans. (b)
29. A child having blood group ‘O’ does not have the parents with blood group:
(a) O, O
(b) B, A
(c) AB, O
(d) AB, AB
Ans. (d)
30. Cockroach and other insects have blood which
(a) Resembles human blood in colour
(b) Has RBCs
(c) Circulates through arteries and veins
(d) Circulates through an open system
Ans. (d)
31. Albinos have been reported in
(a) White race
(b) Black race
(c) Both (a) and (b)
(d) None of these
Ans. (c)
32. Cranial capacity of Australopithecus was
(a) 350—450 cm3
(b) 650—700 cm3
(c) 1050—1150 cm3
(d) 1400—1450 cm3
Ans. (a)
33. Exoskeleton/scales are absent in
(a) Fishes
(b) Retiles
(c) Ichthyophis
(d) Rana tigrina
Ans. (d)
34. Which law of evolution states that “warm-blooded” mammals of hot and humid areas have abundant melanin pigment?
(a) Dollo’s law
(b) Gloger’s law
(c) Cope’s law
(d) Gause’s law
Ans. (b)
35. Reason of death of a patient of cobra-bite is
(a) Destruction of RBC5
(b) Inactivation of nerves
(c) Permanent contraction of muscles
(d) None of the above
Ans. (b)
36. The most important component of contraceptive pills is
(a) Progesterone
(b) Growth hormone
(c) Thyroxine
(d) Luteinizing hormone
Ans. (a)
37. Yolk plug forms during
(a) morula-formation
(b) blastula-formation
(c) Gastrula
(d) Neurulation
Ans. (c)
38. In which of the following only cone cells are found?
(a) Fovea centralis
(b) Retina
(c) Fossa ovalis
(d) Blind spots
Ans. (a)
39. Hepatic portal system collects blood from
(a) Liver
(b) Lungs
(c) Kidney
(d) Alimentary canal
Ans. (d)
40. The first digit of the forearm is termed
(a) Pollex
(b) Hallux
(c) Pollux
(d) None of these
Ans. (a)
41. Bidder’s canal is meant for passage of
(a) Ova
(b) Urine
(c) Sperms
(d) All of these
Ans. (c)
42. Striped muscle fibre has
(a) One nucleus
(b) Two nucleus
(c) Many nuclei
(d) No nuclei
Ans. (c)
43. Billroth’s cords are characteristic of
(a) spinal cord
(b) Notochord
(c) Nerve cord
(d) Spleen
Ans. (d)
44. Nuhn’s glands are present in
(a) Intestine
(b) Tongue
(c) Skin
(d) Stomach
Ans. (b)
45. Amylopsin acts upon
(a) Polysaccharide in any medium
(b) Polysaccharide in acidic medium
(c) Polysaccharide in alkaline medium
(d) Polypeptides
Ans. (c)
46. Hypoxia is the condition in which less oxygen becomes available to the tissues. This may be due to
(a) Lesser oxygen in the atmosphere
(b) More CO in air
(c) Less RBCs in blood
(d) all of the above
Ans. (d)
47. Carotid labyrinth contains
(a) Olfactoreceptors
(b) Baroreceptors
(c) Chemoreceptors
(d) Phonoreceptors
Ans. (b)
48. Juxtaglomerular cells of renal cortex synthesizes a hormone called
(a) ADH
(b) Oxytoxin
(c) Renin
(d) Urochrome
Ans. (c)
49. Corpora striata occur in
(a) cerebrum
(b) Cerebellum
(c) Medulla
(d) Diencephalons
Ans. (a)
50. A point mutation comprising the substitution of purine by pyramidine is called
(a) Deletion
(b) Transition
(c) Transversion
(d) Translocation
Ans. (c)