Que- Study of human population and things that affect them is
a. Ecology
b. Demography
c. Demology
d. Environment study
Answer- Demography
Que- Rate of population growth in 1980s was
a. 0.1
b. 0.01
c. 0.02
d. 0.15
Answer- 0.02
Que- Replantation of plants in the areas where they were present earlier is called
a. Deforestation
b. Aforestation
c. Forestation
d. Reforestation
Answer- Reforestation
Que- Establishment of new forests where no forests existed previously is called
a. Reforestation
b. Forestation
c. Neofrestation
d. Aforestation
Answer- Aforestation
Que- Which is environmental buffer?
a. Mountains
b. Deserts
c. Forests
d. Oceans
Answer- Forests
Que- About half of the rain which falls in tropical forests comes from
a. High winds
b. Cold surroundings
c. Transpiration of plants
d. Surrounding seas
Answer- Transpiration of plants
Que- Biodiversity is
a. Total number of species in a community
b. Total number of species in an ecosystem
c. Total number of genus in an ecosystem
d. None of these
Answer- Total number of species in an ecosystem
Que- Which statement is not true about ozone?
a. Bluish
b. Explosive
c. 10-50 km
d. O2
Answer- O2
Que- Ozone depletion is commonly caused by
a. CFCs
b. Industrial smoke
c. Heavy nitrogen gasses
d. Carbon dioxide
Answer- CFCs
Que- Diseases caused by UV rays in humans
a. Skin cancers
b. Cataracts
c. Night blindness
d. Both a and b
Answer- Both a and b
Que- Which gas commonly causes green house effect?
a. Hydrogen sulphide
b. Carbon dioxide
c. Nitrogen gas
d. Carbon monoxide
Answer- Carbon dioxide
Que- Causes of green house effect are
a. Over urbanization
b. Deforestation
c. Industrialization
d. All of these
Answer- All of these
Que- Sun rays are reradiated from the earth's surface in the form of
a. Long wave radiations
b. Short wave radiations
c. Radiowaves
d. Medium waves
Answer- Long wave radiations
Que- Incomplete burning of carbon compounds cause release of
a. Carbon dioxide
b. Carbon monoxide
c. Oxides of nitrogen
d. CFCs
Answer- Carbon monoxide
Que- Acid rain is caused by
a. Sulphur dioxide
b. Oxides of nitrogen
c. Both a and b
d. None of these
Answer- Both a and b
Que- Algal bloom is also called as
a. Deforestation
b. Eutrophication
c. Neotrophication
d. Lichen
Answer- Eutrophication
Que- The chemical wastes from industry is called
a. Industrial litter
b. Industrial trash
c. Industrial effluents
d. Industrial deffluents
Answer- Industrial effluents
Que- Pesticides and fertilizers are also called
a. Pestochemicals
b. Industrochemicals
c. Killing chemicals
d. Agrochemicals
Answer- Agrochemicals
Que- Which are more susceptible to attacks of pests?
a. Multicultures
b. Monocultures
c. Dicultures
d. Polycultures
Answer- Monocultures
Que- Which disease does not match its etiology?
a. Kwashiorkor is a nutritional deficiency
b. Alzheimer is a mental illness
c. Cretinism is due to hormonal imbalance
d. Cholera is physical disorder
Answer- Cholera is physical disorder
Que- Detergents usually release
a. Carbonates
b. Sulphates
c. Phosphates
d. Nitrates
Answer- Phosphates
Que- Diphtheria is
a. Genetic disease
b. Pathogenic disease
c. Metabolic disease
d. Nutritional disease
Answer- Pathogenic disease
Que- Which one the following is not nutritional disease?
a. Scurvy
b. Anemia
c. Goiter
d. Diabetes
Answer- Diabetes
Que- Unbroken series of organisms arranged from ancestor to descendant sequence is
a. Biodiversity
b. Phyletic lineage
c. Connecting link
d. Evolutionary line
Answer- Phyletic lineage
Que- Control of organisms by using living organisms is called
a. Bioremediation
b. Integrated disease management
c. Antisepsis
d. Biological control
Answer- Biological control
Que- Branch of biology which deals with the study of chemical components and chemical processes in living organisms is called
a. Molecular biology
b. Physiology
c. Biochemistry
d. Atomic biology
Answer- Biochemistry
Que- _______ is the potential surce of chemical energy for cellular activities
a. C-H bond
b. C-O bond
c. C-N bond
d. P-O-C bond
Answer- C-H bond
Que- Percentage of water in brain cells is
a. 0.2
b. 0.65
c. 0.85
d. 0.89
Answer- 0.85
Que- Breakdown of large molecules into smaller ones utilizing water molecules is
a. Hydration
b. Hydrolysis
c. Dehydration synthesis
d. Electrolysis
Answer- Hydrolysis
Que- A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called
a. Substrate
b. Co-factor
c. Inhibitor
d. Promotor
Answer- Inhibitor
Que- Intake of liquid material by cell membrane is called
a. Endocytosis
b. Exocytosis
c. Phagocytosis
d. Pinocytosis
Answer- Pinocytosis
Que- Ribosomes were discovered by
a. Golgi
b. De Duve
c. Palade
d. R.Brown
Answer- Palade
Que- _______ is concerned with cell secretions
a. Endoplasmic reticulum
b. Golgi complex
c. Lysosomes
d. Cell membrane
Answer- Golgi complex
Que- Cytoskeleton involved in assembly and disassembly of the spindle during mitosis is of
a. Microtubules
b. Microfilaments
c. Intermediate filaments
d. None of these
Answer- Microtubules
Que- Reverse transcriptase is present in
a. All RNA viruses
b. All DNA viruses
c. All retroviruses
d. All viruses
Answer- All retroviruses
Que- Pox viruses are
a. RNA non-enveloped
b. RNA enveloped
c. DNA non-enveloped
d. DNA enveloped
Answer- DNA enveloped
Que- Bacteria which grow either in the presence or absence of oxygen
a. Aerobic bacteria
b. Anaerobic bacteria
c. Facultative bacteria
d. Microaerophilic
Answer- Facultative bacteria
Que- Destruction of all life forms is called
a. Sterilization
b. Disinfection
c. Antisepsis
d. Preservation
Answer- Sterilization
Que- _______ is used to relieve one kind of headache, migraine
a. Pencillin
b. Lovastatin
c. Cyclosporine
d. Ergotin
Answer- Ergotin
Que- The single healthy megaspore retained within the megasporangium germinates to form an egg containing female gaemtophyte called
a. Ovule
b. Seed
c. Fruit
d. Embroyo sac
Answer- Embroyo sac
Que- Pollen grains in pinus have _____ for dispersal through wind
a. Flagella
b. Cilia
c. Wings
d. Feathers
Answer- Wings
Que- Double fertilization is feature of
a. Ferns
b. Whisk ferns
c. Gymnosperms
d. Angiosperms
Answer- Angiosperms
Que- Alternation of generations is absent in
a. Hydration
b. Obelia
c. Jelly fish
d. Physalia
Answer- Hydration
Que- Enterobius vermicularis is commonly known as
a. Flatworm
b. Pinworm
c. Hook worm
d. Tapeworm
Answer- Pinworm
Que- Animals of which class of arthropoda are present everywhere
a. Crustacean
b. Insecta
c. Arachnida
d. Myriapoda
Answer- Insecta
Que- Amphibians are considered to be evolved from
a. Newts
b. Varanope
c. Dipnoi
d. Hagfishes
Answer- Dipnoi
Que- Red to orange pigments are
a. Carotenes
b. Carotenoids
c. Xanthophylls
d. Chlorophyll
Answer- Carotenes
Que- NADH is oxidized by
a. Coenzyme ?
b. Cytochrome b
c. Oxygen
d. Glycolysis
Answer- Coenzyme ?
Que- Salivary glands present in front of ear are
a. Sublingual
b. Submaxillary
c. Submandibular
d. Parotid
Answer- Parotid
Que- If bile pigments are prevented from leaving digestive tract, then they cause
a. Hepatitis
b. Jaundice
c. Gall stones
d. Blockage
Answer- Jaundice
Que- How many spiracles are present in cockroach
a. 5.0
b. 10.0
c. 20.0
d. 40.0
Answer- 20.0
Que- Gaseous exchange in birds occurs at level of
a. Alveoli
b. Air sacs
c. Bronchi
d. Parabronchi
Answer- Parabronchi
Que- An infectious disorder of respiratory system is
a. Cancer
b. Asthma
c. Tuberculosis
d. Emphysema
Answer- Tuberculosis
Que- According to cohesion-tension theory, tension is created by
a. Hydrogen bonding
b. Transpiration
c. Adhesion
d. Root prerssure
Answer- Transpiration
Que- Cuticular transpiration is _______ of total transpiration
a. 1-2%
b. 3-4%
c. 5-7%
d. 0.9
Answer- 5-7%
Que- _______ cells of phloem are directly involved in transport of organic solutes
a. Parenchyma
b. Companion cell
c. Tracheid
d. Sieve element
Answer- Sieve element
Que- Deoxygenated blood first enters in _____ part in fishes
a. Sinus venosus
b. Right atrium
c. Left atrium
d. Conus arteriosus
Answer- Sinus venosus
Que- 95% of the cytoplasm of RBCs is
a. Hemoglobin
b. Enzymes
c. Salts
d. Other proteins
Answer- Hemoglobin
Que- lubb sound is produced due to
a. Opening of inlet valve
b. Closure of inlet valve
c. Opening of outlet valve
d. Closure of outlet valve
Answer- Closure of inlet valve
Que- An antibody is made of _____ polypeptide chains
a. 1.0
b. 2.0
c. 3.0
d. 4.0
Answer- 4.0
Que- _______ of earth surface is covered with water
a. 0.1
b. 0.3
c. 0.75
d. 0.9
Answer- 0.75
Que- Ozone depletion occurs commonly due to
a. Carbon dioxide
b. Chlorofluorocarbons
c. UV rays
d. Deforestation
Answer- Chlorofluorocarbons
Que- The productivity of aquatic ecosystem is basically determined by light and
a. CO2
b. O2
c. Water
d. Nutrients
Answer- Nutrients
Que- Ecosystem not found in Pakistan is
a. Tropical rain forest
b. Temperate deciduous forest
c. Grassland
d. Tundra
Answer- Tropical rain forest
Que- Annual rainfall in grassland is about
a. More than 2500 mm
b. 750-1500 mm
c. 250-750 mm
d. Less than 250 mm
Answer- 250-750 mm
Que- Which of the following is most constant abiotic component of ecosystem
a. Air
b. Water
c. Land
d. Gravity
Answer- Gravity
Que- Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due to
a. Rhizobium
b. Nitrosomonas
c. Nitrobacter
d. Pseudomonas
Answer- Nitrosomonas
Que- _______ supported theory of special creation
a. Linnaeus
b. Aristotle
c. Mendel
d. Lamarck
Answer- Linnaeus
Que- In Hardy-Weinberg formula P2 represents frequency of
a. Recessive allele
b. Dominant allele
c. Homozygous dominant individual
d. Homozygous recessive individual
Answer- Homozygous dominant individual
Que- Humming bird is an example of
a. Cold blooded animal
b. Ectotherm
c. Endotherm
d. Heterotherm
Answer- Heterotherm
Que- In condition of high temperature, following does not occur or occurs at low level
a. Vasodilation
b. Activation of sweat glands
c. Thermogenesis
d. Evaporative cooling
Answer- Thermogenesis
Que- Sapwood is formed from
a. Primary xylem
b. Secondary xylem
c. Primary phloem
d. Secondary phloem
Answer- Secondary xylem
Que- Number of cervical vertebrae is
a. 5.0
b. 7.0
c. 9.0
d. 12.0
Answer- 7.0
Que- Joints present in skull are example of
a. Fibrous joints
b. Cartilaginous joints
c. Synovial Joints
d. Slightly moveable joints
Answer- Fibrous joints
Que- Only myosine is present in
a. A band
b. 1 band
c. H zone
d. Sarcomere
Answer- H zone
Que- __________ is a nervous disorder characterized by involuntary tremors, diminished motor power and rigidity.
a. Epilepsy
b. Meningitis
c. Alzheimer's disease
d. Parkinson's disease
Answer- Parkinson's disease
Que- Which of the following hormone is polypeptide in nature
a. Insulin
b. Thyroxine
c. ADH
d. Cortisone
Answer- ADH
Que- Secretin inhibits production of
a. Gastric juice
b. Pancreatic juice
c. Bile
d. All of these
Answer- Gastric juice
Que- Highest form of learning is
a. Latent learning
b. Insight learning
c. Operant conditioning
d. Instinct
Answer- Insight learning
Que- Far-red light promotes flowering in
a. Short day plant
b. Long day plant
c. Day neutral plant
d. None of these
Answer- Short day plant
Que- In human female, fertilization commonly occurs at
a. Proximal part of oviduct
b. Distal part of oviduct
c. Uterus
d. Cervix
Answer- Proximal part of oviduct
Que- Yellowish glandular structure which produces progesterone is
a. Graffian follicle
b. Ovary
c. Corpus luteum
d. Placenta
Answer- Corpus luteum
Que- Yellow cytoplasm in ascidian gives rise to
a. Epidermis
b. Muscle cells
c. Gut
d. Notochord
Answer- Muscle cells
Que- Embryonic induction is caused by part developing from
a. Endoderm
b. Ectoderm
c. Mesoderm
d. Extraembryonic layers
Answer- Mesoderm
Que- Okazaki fragments are connected together through action of
a. Primase
b. Polymerase
c. Helicase
d. Ligase
Answer- Ligase
Que- Sickle cell anemia is an example of
a. Chromosomal aberration
b. Insertion of gene
c. Deletion of gene
d. Point mutation
Answer- Point mutation
Que- Which of the following is an autosomal disorder
a. Down's syndrome
b. Klinifelter's syndrome
c. Turner's syndrome
d. Jacob's syndrome
Answer- Down's syndrome
Que- Test cross is used to find
a. Trait
b. Phenotype
c. Genotype
d. Ratios
Answer- Genotype
Que- An example of codominance is
a. A' blood group
b. B' blood group
c. O' blood group
d. AB' blood group
Answer- AB' blood group
Que- XO-XX pattern of sex determination is present in
a. Grasshopper
b. Butterfly
c. Drosophila
d. Man
Answer- Grasshopper
Que- Tibia is a bone found in the ____________?
a. Skull
b. Arm
c. Leg
d. Face
Answer- Leg
Que- Which is the largest gland in the human body?
a. Thyroid
b. Liver
c. Pancreas
d. None of these
Answer- Liver
Que- Water has maximum density at____________?
a. 0°C
b. 4°C
c. 4° K
d. 4.8°C
Answer- 4°C
Que- The scientific study of livings is called?
a. Anatomy
b. Biology
c. Geology
d. Zoology
Answer- Biology
Que- The word “BIOLOGY” has been derived from_________ word?
a. Latin
b. English
c. Greek
d. French
Answer- Greek
Que- According to modern system of taxonomy, living organisms have been classified into?
a. Three Kingdoms
b. Five Kingdoms
c. Two Kingdoms
d. Six Kingdoms
Answer- Five Kingdoms
Que- Kingdom Protoctista includes____________?
a. Fungi
b. Prokaryotes
c. protists
d. Piantae
Answer- protists
Que- Kingdom Fungi includes_______________?
a. A cellular, eukaryotic organisms
b. Non-chlorophylls, multicellular eukaiyotlc organisms
c. Non-chlorophylls, multioellular,thailophytic organisms
d. Chlorophyllus, multicellular, eukaryotic Organisms
Answer- Non-chlorophylls, multioellular,thailophytic organisms
Que- Earthworm is included in_____________?
a. Kingdom Plantae
b. Kingdom Protoctista
c. Kingdom Monera
d. Kingdom Animalia
Answer- Kingdom Animalia
Que- The Study of organisms inhabiting the sea and Ocean and the physical and chemical characteristics of their environment is:
a. Social Biology
b. Marine Biology
c. Environmental Biology
d. Fresh Water Biology
Answer- Marine Biology