A colour blind person has difficulty in distinguishing which of the two colours ?
1. Green & Red
2. White & Red
3. Blue & Red
4. Red & Black
A Sarcomere is the distance between two
1. Z discs
2.H zones
3.A bands
4.I bands
A tetrad is made up of
1.four homologous pairs of chromosomes
2.two homologous chromosomes, each consisting of two chromatids
3.four non-homologous chromosomes
4. two homologous pairs of chromosomes
A true species in mauritius failed to reproduce because of the extinction of a fruit eating bird. Which one of the following was that bird?
1.Dove
2.Dodo
3.Condor
4.Skua
A vehicle born transmitted diseases are
1.Plague and Malaria
2.Chicken Pox and Tetanus
3.Mumps and Common cold
4.Eye infection and influenza
All of the following are true of neurons except that
1.they conduct a nervous impulse
2.they are a very specialized form of connective tissue
3. thay are separated from one another by synapses
4.When mature, they lose ability to divide
Biological complete proteins are found in
1. Potato, Onion, Carrot
2.Apple, Egg, Wheat
3.Rice, Meat, Butter
4.Meat, Milk, Egg
Fill in the blank with the most appropriate option. Plants that do not have a differentiated plant body belong to the group _____
1.Bryophyta
2.Phanerogams
3.Thallophyta
4. Pteridophyta
Hepatitis virus destroys the cells and may cause the disease
1.Jaundice
2.Malaria
3.Typhoid
4.Elephantiasis
Heritable variation is required for which of the following?
1.Evolution
2.Asexual reproduction
3.Mitosis
4.Meiosis
Important objective of biotechnology in agriculture section is _________
1.% produce best resistant varieties of plant
2.% increase the nitrogen content
3.% decrease the seed number
4. % increase the plant weight
In a bisexual flower if androcium and gynoecium mature at different time the phenomeon is known as _________
1.Dichogamy
2.Herpogamy
3. Haterogamy monogamy
4.None of these
Most bacteria reproduce by
1.budding
2.binary fission
3.fragmentation
4.mitosis
Organisms need Nutrients in order to
1.Breaking down food
2.Utilize chemical compounds
3.recycling
4.None
Plant development is influenced by
1. quality, quantity and duration of light
2.quality and duration of light
3.quality and quantity of light
4.quality of light only
Rubella diseases is described first by the scientist
1.Abu Baqre
2. Ronald Ross
3.Laveris
4.Darwin
Select the correct statement about the Heart Valves.
1.Aortic and pulmonary valves control the flow of blood into the heart.
2. The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.
3.The tricuspid valve divides the left atrium from the left ventricle
4.The mitral valve separates the right atrium from the right ventricle.
Statement I : Bioaccumulation is a process of progressive accumulation of heavy metals and pesticides in an organism. Statement II : Large fishes of the pond are found to have higher concentration of pesticides than planktons of the same pond.
1.Both the statements are individually true and Statement II is the correct explanation of Statement I
2.Both the statements are individually true but Statement II is not the correct explanation of Statement I
3.Statement I is true but Statement II is false
4. Statement I is false but Statement II is true
Succus Entericus is the name given to
1.Intestinal juice
2.Appendix
3. A junction b/w ileum and large intestine
4.None of the above
The artificial kidney is a
1.transplant
2.machine
3. another's kidney
4.other kidney from same body
The biogenetic law was proposed by
1.Alfred Russel Wallace
2.Charles Darwin
3.Ernst von Haeckel
4.Lamarck
The enzyme that is necessary to bring about clotting of blood is
1.peptidase
2.amylase
3.lipase
4.thrombokinase
The grouping of blood is based on substances called
1.antibodies
2.antigens
3.antitoxin
4.enzymes
The kilo calories of energy released from one gram of fats is
1.5.49
2.4.59
3.9.45
4.9.54
The meristem which occurs between mature tissues is known as _________meristem.
1.Intercalary
2.Primary
3.Lateral
4.Apical
The most healthy edible oil for heart is
1.Almond Oil
2.Sesame Oil
3.Mustard Oil
4.Olive Oil
The normal blood pressure in human beings is
1.80/120
2.120/80
3.80/110
4.110/90
The substrate of photorespiration is
1.Glucose
2.Pyruvic acid
3.Glycolate
4.Sucrose
The universal donor belongs to blood group
1.A
2.B
3.AB
4.O
The vitamin required for coagulation of blood
1.B6
2.c
3.k
4.b
Transcription occurs in the
1.DNA
2.Cytoplasm
3.Chromosomes
4.Nucleus
What is scientific name of Cotton ?
1.Azadhirachta Indica
2.Phaseolies auicus
3. Gossypium Herbaceum
4.Ficus Benghalensis
What is the structural unit of compact bone?
1. Osteon
2.Spongy bone
3.Lamellae
4.Periosteum
Which bacteria cause the greatest harm in the food industry?
1.Recycling
2.Digestive
3.Fermenting
4.Pathogenic
Which best describes a tetrad?
1. A diploid cell
2.Two gametes
3.Four chromatids
4.A haploid cell
Which cells are destroyed in AIDS
1.Monocytes
2.Neutrophils
3.Lymphocytes
4.R.B.C.
Which forms the largest portion of the coxal bone?
1.Ilium
2.Ischium
3.Pubis
4.None of the above
Which helps prevent errors in DNA replication?
1.Complementary base pairing reduce errors
2.DNA ligase checks the DNA for errors
3.DNA is located in the ribosomes
4.Any base can pair with any other base
Which nutrient has forms most of our body weight?
1.Water
2.Fats
3.Carbohydrates
4.Proteins
Which of the following is an endocrine gland?
1.Mammary glands
2.Apocrine sweat glands
3.Reproductive glands
4.Salivary glands
Which of the following is the largest phyllum in the animal kingdom in respect of number of species
1.Annalida
2.Platyhelminthes
3.Chordata
4.Arthropoda
Which of the following statements about ddntps is true?
1.They have a hydrogen at the 3 carbon of the sugar
2.DNA polymerase can add a new dNTP to a 3 ddNTP.
3.They have a free 3-hydroxyl group on the ribose sugar
4.They have an oxygen at the 2 carbon of the ribose sugar.
Which of these is NOT a lipid?
1.Wax
2.Cholesterol
3.RNA
4.Phospholipid
Which of these is unique to flowering plants?
1. double fertilization
2.an embryo surrounded by nutritive tissue
3. haploid gametophytes
4.pollen production
Which one of the following organisms is dependent on saprophytic mode of nutrition?
1.Agaricus
2.Ulothrix
3.Riccia
4.Cladophora
Which organ filters blood in human body?
1.Lungs
2.Heart
3.Liver
4.Kidneys
Which statement about capillaries is correct?
1.their walls are covered with cilia
2.they warm and humidify inhaled air
3.their walls are only one cell thick
4.they move mucus through the lungs
Which statement best describes Arteries?
1.They have thin walls and transport blood away from the heart
2.They have thick walls and transport blood toward the heart
3.They have thin walls and transport blood toward the heart
4.They have thick walls and transport blood away from the heart
Why are yeast cells frequently used as hosts for cloning?
1.they are eukaryotic cells
2.they do not have plasmids
3.only yeast cells allow the gene to be cloned
4.they easily form colonies