Biology Gk Solved objective Questions

Biology Gk Solved objective Questions
Biology - General Knowledge Questions and Answers
Biology Gk Soved objective Questions

1. Major food crops of the world belong to
(a) leguminosae
(b) gramineae
(c) solanaceae
(d) cruciferae
Ans. (b)




2. An American plant, which had become a troublesome waterweed in India is
(a) Typha latifolia
(b) Trapa bispinosa
(c) Cyprus rotundus
d) Eichhornia crassipes
Ans. (d)

3. The major drawback of DDT as a pesticide is that
(a) it is significantly less effective than other pesticides
(b) its cost of production is high
(c) it is not readily and rapidly degraded in nature
(d) Organisms at once develop resistance to it
Ans. (c)

4. Autotrophs and heterotrophs differ in
(a) How they obtain their carbon
(b) Whether they are prokaryotic or eukaryotic
(c) How they reproduce, sexually or asexually
(d) Whether they use chemicals or light as a source of energy
Ans. (a)

5. Removal of topsoil by wind and water is called
(a) soil consecration
(b) Soil binding
(c) Soil erosion
(d) Mulching
Ans. (c)

6. Which of the following is an example of a weed of kharif season that infest maize crop?
(a) Amaranthus (chauli)
(b) Nut grass (motha)
(c) Sorghum (jangali jowar)
(d) All of the above
Ans. (d)

7. Green manuring enhances crop yield by
(a) 5—10%
(b) 15—25%
(c) 30—50%
(d) 60—75%
Ans. (c)


8. Nitrogen content of urea is
(a) 46%
(b) 36%
(c) 26%
(d) 56%
Ans. (a)

9. The science of improving crop varieties is called
(a) Hybridization
(b) Selection
(c) Introduction
(d) Plant breeding
Ans. (d)

10. Growing two or more crops but in definite row pattern is known as
(a) Intercropping
(b) Crop rotation
(c) Mixed farming
(d) Mixed cropping
Ans. (a)

11. Green revolution refers to
(a) Maintaining soil fertility
(b) Use of green plants for covering the earth
(c) Development of new crop varieties which helped to overcome hunger
(d) Growing green plants to establish balance of nature
Ans. (c)

12. Recognition for bringing green revolution to India goes to
(a) M.S. Swaminathan
(b) Norman Borlaug
(c) B.P. Pal
(d) Gurdev S. Khush
Ans. (a)

13. The Jersey bull used for cross breeding is exotic variety from
(a) USA
(b) UK
(c) Switzerland
(d) Holland
Ans. (a)

14. Fever, inflammation of the mucous membranes, particularly the intestines, discharges from the eyes and nose, dehydration, and skin eruptions on the back and flanks; death comes after four to eight days. These are the major symptoms of
(a) Rinderpest
(b) Anthrax
(c) Foot and Mouth Disease
(d) Cholera
Ans. (a)

15. Sharbati Sonora variety of wheat was obtained by
(a) Crossing with wild varieties of wheat
(b) Hybridization between wild varieties of wheat
(c) X-ray treatment
(d) Irradiation of Sonora 64 with gamma rays
Ans. (d)

16. Horti-pastoral farming refers to
(a) Growing food and fodder
(b) Growing mixed crops
(c) Growing fodder and rearing cattle, etc.
(d) Growing fruit trees and fodder simultaneously
Ans. (d)

17. Which is the oldest breeding method?
(a) Hybridization
(b) Selection
(c) Mutation
(d) Introduction
Ans. (d)

18. The technique in which the developing embryo (at definite stage) from a pregnant superior breed is removed and transferred to another female with inferior characters, in whose body further development till birth takes place
(a) Embryo transfer
(b) Artificial insemination
(c) Protoplast fusion
(d) Cloning
Ans. (a)

19. Silver Revolution is associated with the increase in the production of
(a) Meat
(b) Cereals
(c) Eggs
(d) Milk
Ans. (c)

20. Catla and rohu are examples of
(a) Freshwater fish
(b) Marine fish
(c) Brackish water fish
(d) None of these
Ans. (a)

21. The IPN (Infectious Pancreatic Necrosis) and VMS (Viral Hemorrhagic Septicemia) are well known infectious diseases of
(a) Fish
(b) Cattle
(c) Poultry
(d) None of the above
Ans. (a)

22. The production of useful aquatic plants and animals like prawns, fish, lobsters, crabs, molluscs, etc., using various types of water resources is called
(a) Aquaculture
(b) Pisciculture
(c) Silviculture
(d) Silver revolution
Ans. (a)

23. Mehsana and Jaffarabadi are examples of
(a) Indian breeds of buffaloes
(b) Breeds of cow
(c) Breeds of sheep
(d) Indian breeds of goat
Ans. (a)

24. Bombay duck and hilsa are examples of
(a) Freshwater fish
(b) Marine fish
(c) Breeds of sheep
(d) Breeds of ducks
Ans. (b)

25. Human genome contains about
(a) 10,000 nucleotides
(b) 10,000 genes
(c) 6 billion nucleotides
(d) 6 billion genes
Ans. (c)

Nursing Aptitude Test Free Sample Questions

Nursing Aptitude Test Free Sample Questions
Nursing Entrance Test Practice Questions
1. Wrinkling in old age is due to
(a) Collagen
(b) Myosin
(c) Keratin
(d) Actin
Ans. (a)


2. Which one of the following directly helps in keeping the body warm?
(a) Sweat glands
(b) Adipose tissue
(c) Connective tissue
(d) Hairs
Ans. (b)

3. The fibrous tissue, which connects the two bones, is
(a) Connective tissue
(b) Ligament
(c) Tendon
(d) Adipose tissue
Ans. (b)

4. Bone forming cells are
(a) Osteoblasts
(b) Osteoclasts
(c) Chondroblasts
(d) Chondroclasts
Ans. (a)

5. A man was brought up at sea level while his brother spent all his life at an altitude of 10,000 feet. The latter will have
(a) More active bone marrow
(b) Lower blood pressure
(c) Less sub dermal fat
(d) More active sweat glands
Ans. (a)

6. Triceps and biceps are examples of
(a) Antagonistic muscles
(b) Involuntary muscles
(c) Sphincter muscles
(d) Smooth muscles
Ans. (a)

7. A bone is distinguished from cartilage by the presence of
(a) Collagen
(b) Lymph vessels
(c) Blood vessels
(d) Haversian canals
Ans. (d)

8. Which one of these is a kind of tissue?
(a) Lung
(b) Kidney
(c) Blood
(d) Pancreas
Ans. (c)

9. Nissl’s granules are found in cyton of nerve cells. These have affinity for basic dyes. The granules are made up of
(a) Proteins
(b) DNA
(c) Amino acids
(d) RNA
Ans. (d)

10. In camel, erythrocytes are
(a) Oval and nucleated
(b) Circular, biconcave and nucleated
(c) Oval and non-nucleated
(d) Circular, biconcave, non-nucleated
Ans. (b)

11. Iron in hemoglobin exists as
(a) Unionized iron atom
(b) Ferric ions only
(c) Ferrous ions only
(d) Ferric or ferrous ions depending upon the oxygenate state of the heme moiety
Ans. (c)

12. Red cell count is carried out by
(a) Haemocytometer
(b) Haemoglobinometer
(c) Sphygmomanometer
(d) Electrocardiogram
Ans. (a)

13. Striated muscles are found in
(a) gall bladder
(b) Wall of bronchi
(c) Leg muscles
(d) Lungs
Ans. (c)

14. Smooth muscle fibers are
(a) spindle-shaped, unbranched, non striated, multinucleate and involuntary
(b) spindle-shaped, unbranched, unstriated, uninucleate and involuntary
(c) Cylindrical, striated, unbranched, multinucleate and voluntary
(d) Cylindrical, unbranched, non-striated, multinucleate and involuntary
Ans. (b)

15. In human, increased heat production is achieved most rapidly by increase the activity of the
(a) sweat gland
(b) Liver
(c) Skeletal muscle
(d) Brain
Ans. (c)

16. Muscles, which are immune to fatigue, are
(a) Unstriped muscles
(b) Cardiac muscles
(c) Jaw muscles
(d) Skeleton muscles
Ans. (b)

17. Ozone day is
(a) January 30
(b) December 25
(c) April 21
(d) September 16
Ans. (d)

18. Cadmium pollution is associated with disease
(a) itai-itai
(b) anaemia
(c) minamata
(d) Pneumoconiosis
Ans. (a)

19. Schwann cells and nodes of Ranvier are found in
(a) Neurons
(b) Chondroblasts
(c) Osteoblasts
(d) Gland cells
Ans. (a)

20. Formation of ozone hole is maximum over
(a) India
(b) Africa
(c) Antarctica
(d) Europe
Ans. (c)

21. Afferent nerve fiber carries impulses from
(a) Effectors to central nervous system
(b) Receptor to central nervous system
(c) Central nervous system to muscle
(d) Central nervous system to receptors
Ans. (b)

22. Among pollutants that has the most lasting effect
(a) carbon monoxide
(b) pesticides
(c) sulphur dioxide
(d) Smoke from chimneys
Ans. (b)

23. Most of the human neurons are
(a) Multipolar
(b) Bipolar
(c) Univocal
(d) Pseudo-unipolar
Ans. (a)

24. Thermal pollution is more prevalent near
(a) Hot water springs
(b) Coal based power plants
(c) temperate zones
(d) tropical zones
Ans. (b)

25. Some effects of SO2 and its transformation products on plants include
(a) Chlorophyll destruction
(b) Plasmolysis
(c) Golgi body destruction
(d) Exosmosis
Ans. (a)

Free Objective Solved Questions For Nursing jobs Exams

Free Objective Solved Questions For Nursing jobs Exams
Biology model Question papers with Answers for Nursing jobs
1. Haversian system is typically found in bones of
(a) Fishes
(b) Ayes
(c) Reptiles
(d) Mammals
Ans. (d)


2. The actively dividing layer of columnar cells in the epidermis of man is called as the
(a) Stratum granulosum
(b) Stratum lucidum
(c) Stratum malpighi
(d) Stratum comeum
Ans. (c)

3. The bone of a mammal contains Haversian canals, which are connected by transverse canals known as
(a) Semicircular canals
(b) Inguinal canals
(c) Volkmann’s canals
(d) Bidder’s canals
Ans. (c)

4. Horns of most mammals are composed of
(a) Bones
(b) Cartilage
(c) Keratin
(d) Chitin
Ans. (c)

5. Blood is
(a) Acidic
(b) Alkaline
(c) Variable
(d) Neutral
Ans. (b)

6. Theory of inheritance of acquired characters was put forth by
(a) De Vries
(b) Lamarck
(c) Weismann
(d) Galton
Ans. (b)

7. Mammalian erythrocytes are
(a) circular
(b) Biconcave
(c) Non-nucleated
(d) All the above
Ans. (d)

8. Gennplasm theory was given by
(a) Lamarck
(b) Weismann
(c) Darwin
(d) De Vries
Ans. (b)

9. Life span of RBC is
(a) 50 days
(b) 75 days
(c) 120 days
(d) 100 days
Ans. (c)

10. The biggest opponent of Lamarck was
(a) G. Cuvier
(b) A. Weismann
(c) I. Pavlov
(d) Kamrer
Ans. (b)

11. Basic idea of organic evolution is
(a) Cosmic evolution
(b) Descent with modification
(c) Special creation
(d) Spontaneous generation
Ans. (b)

12. All of the following influenced Dw1N as he synthesised the concept of natural selection except
(a) The finches of the Galapagos
(b) Malthus’s essay on the principle of population
(c) The results of artificial selection
(d) Mendel’s laws of inheritance
Ans. (d)

13. The Galapagos Islands are associated with the visit of
(a) Jean Lamarck
(b) Charles Darwin
(c) Gregor Mendel
(d) Alfred Wallace
Ans. (b)

14. Which one of the following blood pigments contains copper?
(a) Haemoerythrin
(b) Haemocyanin
(c) Chlorocruorin
(d) Haemoglobin
Ans. (b)

15. Which of the following was most influential upon Darwin’s formulation of theory of natural selection?
(a) De Vries concept of mutation
(b) Wallace’s paper on survival
(c) Malthus’s essay on population
(d) Lamarck’s on inheritance of acquired characters
Ans. (c)

16. Which of the following tissues in a human being uses the greatest amount of energy?
(a) Vascular tissue
(b) Muscular tissue
(c) Nervous tissue
(d) Epithelial tissue
Ans. (b)

17. ‘Survival of the fittest’ was used by
(a) Charles Darwin
(b) Jean Baptiste Lamarck
(c) Hugo DeVries
(d) Herbert Spencer
Ans. (d)

18. Striped muscle fiber has
(a) Many nuclei
(b) Two nuclei
(c) No nuclei
(d) One nucleus
Ans. (a)

19. After observing the variations HUGO DE VRIES first of all described the mutation in
(a) Oenothera lamarl.4ana
(b) Neurospora crassa
(c) Pisum sativum
(d) Drosophila melanogaster
Ans. (a)

20. Pollutant from motorcar exhaust that causes mental diseases is
(a) Lead
(b) NO2
(c) SO2
(d) Hg
Ans. (a)

21. When we lift hand
(a) The triceps contracts and the biceps relaxes
(b) The biceps contracts and the triceps relaxes
(c) Both biceps and triceps contract
(d) Both biceps and triceps relax
Ans. (b)

22. Lichens are important in the studies on atmospheric pollution because they
(a) Can also grow in greatly polluted atmosphere
(b) Can readily multiply in polluted atmosphere
(c) Are very sensitive to pollutants like SO2
(d) Efficiently purify the atmosphere
Ans. (c)

23. Measurement of 1ate of oxygen utilization by a unit volume of water over a period of time is to measure
(a) Biochemical oxygen demand
(b) Biosynthetic pathway
(c) Biogas generation
(d) Fermentation
Ans. (a)

24. The strongest muscle in the body is present in
(a) Arm
(b) Jaw
(c) Thigh
(d) Neck
Ans. (b)

25. The two great industrial tragedies namely, MIC and Chernobyl tragedies respectively occurred where and at which time?
(a) Bhopal 1984, Ukraine 1990
(b) Bhopal 1984, Ukraine 1988
(c) Bhopal 1984, Ukraine 1986
(d) Bhopal 1986, Russia 1988
Ans. (c)

Assertion Reason MCQ Biology

Assertion Reason MCQ Biology
assertion reason Biology test
Assertion-Reason Multiple-Choice Zoology Biology


1. Assertion (A): In citric acid cycle, when succinate is oxidized to fumarate, a molecule of carbon dioxide is lost.
Reason (R): When succinate is oxidized to fumarate, electrons and protons are passed to FAD reducing it toFADH2.
Ans. (d)

2. Assertion (A): Before the origin of life, the atmosphere on earth was deducing in nature.
Reason (R): There was a great deal of volcanic activity at that time.
Ans. (b)

3. Assertion (A): RNA polymerases can synthesize RNA molecules from DNA template in both 5-3 and 3-5 directions.
Reason (R): RNA polymerases can slide in either direction along a DNA template.
Ans. (d)

4. Assertion (A): In sycon (Scypha), only self fertilization occurs.
Reason (R): In sycon, special sex organs are lacking.
Ans. (d)

5. Assertion (A): In prokaryotes, the translation begins on m-RNA before transcription is completed.
Reason (R): The triplet codons in prokaryotic m-RNA are transcribed from the sense strand of DNA and subsequently are translated continuously from the 3’ — OH end to the 5’ — PO4 end
Ans. (c)


6. Assertion (A): In the zygote, there is no cytoplasmic contribution from paternal side.
Reason (R): The cytoplasm of the sperm is discarded just before fertilization.
Ans. (a)

7. Assertion (A): Only the male offspring of the hemophilic father suffers from the disease.
Reason (R): Hemophilia is an X-Linked dominant disease.
Ans. (c)

8. Assertion (A): Nucleolus is the site for rRNA synthesis.
Reason (R): rRNA is needed for its function within the nucleus.
Ans. (b)

9. Assertion (A): Glycine is an optically active amino acid.
Reason (R): The a-carbon in glycine is asymmetric.
Ans. (d)

10. Assertion (A): Increase in the atmospheric temperature results in higher relative humidity.
Reason (R): High ambient temperature increases the capacity of the air to retain moisture.
Ans. (d)