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Biology Test 45
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Biology Test 45
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  • Question 1/30
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    1 and 4

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    Which of the following diseases of milching animals are infections ? 1. Foot and Mouth disease   2. Anthrax       3.  Black Quarter    4. Cowpox Select the correct answer using the codes given below:
    Solutions
    1 and 4
  • Question 2/30
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    osteoclasts

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    Low levels of calcium and phosphate ions in the blood would stimulate the activity of ________.
    Solutions
    osteoclasts
  • Question 3/30
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    A = r, B = s, C = p, D = q

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    Match the compounds given in column-I with the number of carbon atoms present in them which are listed under column-II. Choose the answer which gives the correct combination of alphabets of the two columns. Column - I                                 Column - II A. Oxaloacetate                        p. 6 - C compound B. Phosphoglyceraldehyde       q. 5 - C compound C. lsocitrate                               r. 4 - C compound D. a-Ketoglutarate                     s. 3 - C compound t. 2 - C compoun
    Solutions
    A = r, B = s, C = p, D = q
  • Question 4/30
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    Psammophytes

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    Plants growing on sand are called as ?
    Solutions
    Psammophytes
  • Question 5/30
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    Death rates are highest in newborns and in the elderly, whereas birth rates are highest in 20-year-olds.

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    Which of the following statements about human birth and death rates in populations is correct?
    Solutions
    Death rates are highest in newborns and in the elderly, whereas birth rates are highest in 20-year-olds.
  • Question 6/30
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    Calcium and phosphorus

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    Bones are mainly made up of?
    Solutions
    Calcium and phosphorus
  • Question 7/30
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    Non-sister chromatids

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    The chromatids of two different chromosomes are called?
    Solutions
    Non-sister chromatids
  • Question 8/30
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    osteons

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    Cylindrical structures in compact bone containing osteocytes arranged around a central canal are known as ________.
    Solutions
    osteons
  • Question 9/30
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    Melanin

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    Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called?
    Solutions
    Melanin
  • Question 10/30
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    25-55 years

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    Huntington’s chorea appears at the age of :
    Solutions
    25-55 years
  • Question 11/30
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    oxyntic cells

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    HCI is secreted by?
    Solutions
    oxyntic cells
  • Question 12/30
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    plants, animals and fungi

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    True multicellularity occurs only in.
    Solutions
    plants, animals and fungi
  • Question 13/30
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    Polyunsaturated fatty acids

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    Consumption of fish is considered to be  healthy when compared to flesh of other animals because fish contains
    Solutions
    Polyunsaturated fatty acids
  • Question 14/30
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    Alveodli

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    The exchange of gases in mammals takes place in the ?
    Solutions
    Alveodli
  • Question 15/30
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    Sodium or potassium salts of heavier fatty acids

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    What are soaps?
    Solutions
    Sodium or potassium salts of heavier fatty acids
  • Question 16/30
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    Riccia

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    Gametophyte is the dominant phase in the lifecycle of ________.
    Solutions
    Riccia
  • Question 17/30
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    3 only

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    Consider the following statements: 1. Dengue is protozoan disease transmitted by mosquitoes. 2. Retro-orbital pain is not a symptom of Dengue. 3. Skin rash and bleeding from nose and gums are some of the symptoms of the  Dengue. Which of the statements given above is/are correct ?
    Solutions
    3 only
  • Question 18/30
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    Nitrogen

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    The most abundant constituent of atmospheric air is..
    Solutions
    Nitrogen
  • Question 19/30
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    reduce transpiration

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    In dry regions, the leaf size of a tree becomes smaller. It is so to.
    Solutions
    reduce transpiration
  • Question 20/30
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    Polio and Bird Flu

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    Diseases of which of the following pairs are caused by virus ?
    Solutions
    Polio and Bird Flu
  • Question 21/30
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    life table.

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    A table listing such items as age, observed number of organisms alive each year, and life expectancy is known as a..
    Solutions
    life table.
  • Question 22/30
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    A-(3),B-(4),C-(2),D-(1)

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    Match List-I with List-II and select the correct answer using the codes given below the lists : List-I                                                    List-II (Achievement in genetics )                          (Scientists ) A. Discovery of transduction and                1. Khurana conjugation in bacteria B. Establishing the sex-linked                    2. Romberg inheritance C. Isolation of DNA polymerase from           3. Lederberg E.Coli D. Establishing the complete genetic           4. Morgan code                                                5. Ochoa
    Solutions
    A-(3),B-(4),C-(2),D-(1)
  • Question 23/30
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    An antigen-antibody reaction

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    Which of the following is fundamentally the Rh factor ?
    Solutions
    An antigen-antibody reaction
  • Question 24/30
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    Haemophilla

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    An example of X-linked inheritance in humans is ?
    Solutions
    Haemophilla
  • Question 25/30
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    Secondary oocyte

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    In Hen the egg is fertilized at the stage of..
    Solutions
    Secondary oocyte
  • Question 26/30
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    anitgens

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    When an organ is transplanted from one person to another, there is a possibility that it could be rejected. This is because the cells of the individual receiving the organ react against foreign:
    Solutions
    anitgens
  • Question 27/30
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    the chemical

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    A scientist testing the affects of a chemical on apple yeild sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. Which of the following is the independent variable in the experiment?
    Solutions
    the chemical
  • Question 28/30
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    Leaf rust

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    Coffee cultivation in Sri Lanka was abandoned because of the disease
    Solutions
    Leaf rust
  • Question 29/30
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    mass of fungal spores

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    The common edible mushroom is a
    Solutions
    mass of fungal spores
  • Question 30/30
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    An ovum

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    Which of the following human cells contains 23 chromosomes?
    Solutions
    An ovum
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