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Biology Online Quizzes
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Biology Quiz Test 09
Which of the following parts of the brain controls body temperature and hunger?
(A) Thalamus
(B) Pons
(C) Cerebellum
(D) Hypothalamus
Which of the following is a part of hindbrain?
(A) Hypothalamus
(B) Cerebellum
(C) Spinal cord
(D) Corpus callosum
The balancing organ of the ear is
(A) Organ of Corti
(B) Vestibular apparatus
(C) Tectorial membrane
(D) Cochlea
Intercostal muscles are attached with
(A) Diaphragm
(B) Ribs
(C) Thigh
(D) Abdomen
A deltoid ridge is present in
(A) Humerus
(B) Femur
(C) Radius
(D) Ulna
Cartilage at the end of long bones is
(A) Calcified cartilage
(B) Fibrous cartilage
(C) Hyaline cartilage
(D) Elastic cartilage
Which of the following is the correctly matched pair of an organ and muscles present in the organ?
(A) Intestine – striated and involuntary
(B) Upper arm – smooth muscle and fusiform in shape
(C) Heart – involuntary and unstriated smooth muscle
(D) Thigh – striated and voluntary
The middle portion of the human sperm contains
(A) Nucleus
(B) Centriole
(C) Proteins
(D) Mitochondria
Which of the following joints is immovable?
(A) Fibrous joint
(B) Synovial joint
(C) Cartilaginous joints
(D) Ball and Socket joint
Single uriniferous tubule does not contain
(A) Loop of Henle
(B) Collecting duct
(C) Distal convoluted tubule
(D) Bowman’s capsule
The basic functional unit of a human kidney is known as
(A) Nephron
(B) Nephridia
(C) Pyramid
(D) Henle’s loop nephron
Which of the following features is common in both humans and adult frogs?
(A) Internal fertilization
(B) Ureotelic mode of excretion
(C) Nucleated RBCs
(D) Four chambered heart
Heartbeat originates from
(A) papillary muscles
(B) SA node
(C) AV node
(D) Purkinje fibres
Which of the following organs contains Bundle of His?
(A) Pancreas
(B) Brain
(C) Kidney
(D) Heart
Which of the following organs is known as “graveyard†of RBCs?
(A) Spleen
(B) Kidney
(C) Liver
(D) Gall bladder
The maximum amount of urea is present in
(A) Dorsal Aorta
(B) Hepatic Vein
(C) Renal Vein
(D) Hepatic Portal Vein
Lungs are enclosed within
(A) Perichondrium
(B) Periosteum
(C) Pleural membrane
(D) Pericardium
Which of the following is present on the surface of intestinal epithelial cells?
(A) Zymogen granules
(B) Pinocytic vesicles
(C) Phagocytic vesicles
(D) Microvilli
Which of the following muscular valve controls the flow of digestive juice from the hepatopancreatic duct to duodenum?
(A) Sphincter of Oddi
(B) Semilunar valve
(C) Ileocaecal valve
(D) Pyloric sphincter
Which of the following organisms is used in alcoholic fermentation?
(A) Pseudomonas
(B) Aspergillus
(C) Saccharomyces
(D) Penicillium
Trichoderma harzianum is useful for
(A) Bioremediation of contaminated soils
(B) Gene transfer in higher plants
(C) Reclamation of wastelands
(D) Biological control of soilborne plant pathogens
Find the incorrectly matched pair
(A) Serratia – Drug addiction
(B) Spirulina – Single cell protein
(C) Rhizobium – Biofertilizer
(D) Streptomyces – Antibiotic
Which of the following microorganisms is not used as a biofertilizer?
(A) Rhizobium
(B) Nostoc
(C) Mycorrhiza
(D) Agrobacterium
Which alga can be used as food for the human being?
(A) Chlorella
(B) Polysiphonia
(C) Ulothrix
(D) Spirogyra
Yeast is used for the production of
(A) Tetracycline
(B) Butanol
(C) Ethanol
(D) Citric Acid
A common biopesticide for preventing plants from butterfly caterpillars is
(A) Trichoderma
(B) Baculovirus
(C) Glomus
(D) Bacillus thuringiensis
Which of the following is used as a biofertilizer for soyabean crop?
(A) Rhizobium
(B) Azotobacter
(C) Nostoc
(D) Azospirillum
Which of the following organism is nitrogen-fixing and found in rice fields in symbiotic association with Azolla?
(A) Frankia
(B) Tolypothrix
(C) Spirulina
(D) Anabaena
Which of the following produces citric acid?
(A) Aspergillus
(B) Pseudomonas
(C) Saccharomyces
(D) Clostridium
The _________ is a temporary organ that connects a mammalian mother to its foetus
(A) Placenta
(B) Chorion
(C) Endometrium
(D) None of these
The ________ is an ovoviviparous animal
(A) Bonobo
(B) Basking shark
(C) Blue shark
(D) None of these
________ is an example of an oviparous animal
(A) Elephant
(B) Sheep
(C) Pidgeon
(D) None of these
___________ is an example of a viviparous animal
(A) Goat
(B) Duck
(C) Crocodile
(D) None of these
Acrosome is filled with
(A) Lipids
(B) Hormones
(C) Digestive enzymes
(D) None of these
Acrosome is filled with
(A) Lipids
(B) Hormones
(C) Digestive enzymes
(D) None of these
Wolffian duct is also known as
(A) Mesonephric duct
(B) Ejaculatory duct
(C) Major sublingual duct
(D) Cystic duct
The hormone that is released from the testes is
(A) Progesterone
(B) Vasopressin
(C) Testosterone
(D) None of these
Bidder’s canal receives
(A) Egg
(B) Sperms
(C) Ammonia
(D) Oxygenated Blood
Cryptorchidism is a condition where
(A) One of both testes are not developed
(B) One or both testes fail to descend into the scrotum
(C) One or both testes are not formed
(D) None of these
How does human sperm locomote?
(A) Flagella
(B) Cillia
(C) Neutrophills
(D) None of these
Umbilical cord contains
(A) Pluripotent stem cells
(B) Cord blood stem cells
(C) Blood stem cells
(D) None of these
___________is an organelle that helps the sperm to penetrate the ovum
(A) Acrosome
(B) Zona pellucida
(C) Megalis
(D) None of these
Where does the ovum receive the sperm?
(A) Animal pole
(B) Vegetal pole
(C) Zona pellucida
(D) None of these
How many autosomes does a human primary spermatocyte have?
(A) 34
(B) 44
(C) 54
(D) 33
_______ is a lytic enzyme released by the sperm
(A) Hyaluronidase
(B) Trypsin
(C) Helicase
(D) None of these
A deltoid ridge is present in
(A) Humerus
(B) Femur
(C) Radius
(D) Ulna
Cartilage at the end of long bones is
(A) Calcified cartilage
(B) Hyaline cartilage
(C) Elastic cartilage
(D) Fibrous cartilage
Which of the following is the correctly matched pair of an organ and muscles present in the organ?
(A) Intestine – striated and involuntary
(B) Upper arm – smooth muscle and fusiform in shape
(C) Heart – involuntary and unstriated smooth muscle
(D) Thigh – striated and voluntary
The middle portion of the human sperm contains
(A) Nucleus
(B) Proteins
(C) Centriole
(D) Mitochondria
Which of the following joints is immovable?
(A) Fibrous joint
(B) Synovial joint
(C) Cartilaginous joints
(D) Ball and Socket joint
Single uriniferous tubule does not contain
(A) Loop of Henle
(B) Collecting duct
(C) Distal convoluted tubule
(D) Bowman s capsule
The basic functional unit of a human kidney is known as
(A) Nephron
(B) Pyramid
(C) Henle s loop nephron
(D) Nephridia
Which of the following features is common in both humans and adult frogs?
(A) Internal fertilization
(B) Ureotelic mode of excretion
(C) Nucleated RBCs
(D) Four chambered heart
Heartbeat originates from
(A) papillary muscles
(B) SA node
(C) AV node
(D) Purkinje fibres
Which of the following organs contains Bundle of His?
(A) Pancreas
(B) Brain
(C) Kidney
(D) Heart
Which of the following organs is known as graveyard of RBCs?
(A) Spleen
(B) Kidney
(C) Liver
(D) Gall bladder
The maximum amount of urea is present in
(A) Dorsal Aorta
(B) Hepatic Vein
(C) Renal Vein
(D) Hepatic Portal Vein
Lungs are enclosed within
(A) Perichondrium
(B) Periosteum
(C) Pleural membrane
(D) Pericardium
Which of the following is present on the surface of intestinal epithelial cells?
(A) Zymogen granules
(B) Pinocytic vesicles
(C) Phagocytic vesicles
(D) Microvilli
Which of the following muscular valve controls the flow of digestive juice from the hepatopancreatic duct to duodenum?
(A) Sphincter of Oddi
(B) Semilunar valve
(C) Pyloric sphincter
(D) Ileocaecal valve
The eggshell of birds becomes thin by the pollution from pesticides due to the interference in the activity of
(A) Calmodulin
(B) MgATPase
(C) CaATPase
(D) Calcium
dB is the abbreviation used for the quantitative expression of
(A) Density of bacteria in a medium
(B) A Particular Pollutant
(C) Dominant Bacillus in a culture
(D) A pesticide
Plant species with a wide range of genetic distribution evolve into a local population known as
(A) Ecotype
(B) Population
(C) Ecosystem
(D) Biome
Which of the following lake zones has phytoplanktons in abundance?
(A) Littoral zone
(B) Benthic zone
(C) Limnetic zone
(D) Profundal zone
The population of birds declined in an area where DDT was extensively used. Why?
(A) The birds stopped laying eggs
(B) The eggs laid by the birds did not hatch
(C) The snakes ate the eggs
(D) The DDT spray killed all the birds
The pyramid of energy is always upright states that
(A) The energy conversion efficiency of herbivores is better than carnivores
(B) The energy conversion efficiency of carnivores is better than herbivores
(C) Producers have the lowest energy conversion efficiency
(D) Energy conversion efficiency is the same in all trophic levels
Identify the mismatched pair
(A) Tundra – Permafrost
(B) Savanna – Acacia trees
(C) Prairie – Epiphytes
(D) Coniferous forest – Evergreen trees
What type of food chain is it? dead animals → blowfly maggot → maggots → frog → snake
(A) Detrital food chain
(B) Decomposer food chain
(C) Predator food chain
(D) Grazing food chain
The upper part of an aquatic ecosystem contains
(A) Nekton
(B) Plankton
(C) Benthos
(D) both (1) and (2)
All species of Lemur are endemic to which area?
(A) Madagascar
(B) Seychelles Island
(C) Galapagos Island
(D) New Caledonia
Which one is a ‘K’ selected species?
(A) Aspergillus
(B) Human
(C) Taraxacum
(D) Grass
Select a non-denitrifying bacteria
(A) Pseudomonas aeruginosa
(B) Thiobacillus
(C) Thiobacillus denitrificans
(D) Bacillus ramosus
In thermal stratification, the middle region which shows vertical temperature change is called
(A) Mesolimnion
(B) Epilimnion
(C) Metalimnion
(D) Hypolimnion
In an ecosystem, the energy flow is always
(A) Always unidirectional
(B) Always bidirectional
(C) In any direction
(D) Always down directional
The ability of a population to increase under ideal environmental conditions is called
(A) Natality
(B) Carrying capacity
(C) Biotic potential
(D) Absolute natality
The ratio between energy flow at different points in a food chain is known as
(A) Ecological capacity
(B) Ecological efficiency
(C) Ecological assimilation
(D) Ecological potential
Allelopathy refers to
(A) Inhibition of growth of one species by another by the production of toxins
(B) Inhibition of sporulation of pathogen by the host
(C) Altering the reproductive cycle of one organism by another
(D) Inhibition of growth of one species by another by preventing reproduction
Lincoln index measures
(A) Population mortality rate
(B) Population natality rate
(C) Population size
(D) Population density
Which is not the characteristic of a population?
(A) Natality
(B) Mortality
(C) Stratification
(D) Sex ratio
Which is not the characteristic of ‘r’ selected species?
(A) Reproduce quickly
(B) Parental care
(C) A low survival rate of progenies
(D) Produce a large number of progenies
The bottom area where production is less than respiration in a pond ecosystem is termed as
(A) Profundal zone
(B) Tidal zone
(C) Benthic zone
(D) Limnetic zone
Which of the following requires maximum energy?
(A) Secondary consumer
(B) Decomposer
(C) Primary consumer
(D) Primary producer
The process of vernalization is practised in
(A) Cold countries
(B) Hot countries
(C) Only in sub-tropical countries
(D) Only in tropical countries
Which statement is correct with respect to the food chain?
(A) Every component of food chain forms trophic level
(B) Inter-relation between different food chains is known as a food web
(C) All the chains formed by nutritional relations is used to understand energy flow
(D) All of the above
An orchid living on a tree exhibits
(A) Predator
(B) Mutualism
(C) Commensalism
(D) Parasitism
Plants growing under shade are known as
(A) Psamophytes
(B) Sciophytes
(C) Heliophytes
(D) Monocots
Plants growing under direct sunlight are known as
(A) Heliophytes
(B) Sciophytes
(C) Psamophytes
(D) Dicots
According to Shelford’s Law of Tolerance, the organisms wide environmental factor tolerance limit show
(A) Narrow distribution with low population size
(B) Wide distribution with high population size
(C) Narrow distribution with high population size
(D) Wide distribution with low population size
Which is the renewable exhaustible natural energy resource?
(A) Coal
(B) Petroleum
(C) Kerosene
(D) Biomass
The natural place of an organism or community is known as
(A) Niche
(B) Biome
(C) Habitat
(D) Habit
Which of the following immunity is called the first line of defence?
(A) Innate Immunity
(B) Active immunity
(C) Passive immunity
(D) Acquired immunity
Cells Involved In Innate Immunity are
(A) Phagocytes
(B) Macrophages
(C) Natural Killer Cells
(D) All of the above
Skin, body hair, cilia, eyelashes, the respiratory tract and the gastrointestinal tract are examples of
(A) Physical barrier
(B) Cellular barriers
(C) Cytokine barriers
(D) Physiological barriers
Which of the following immunity is obtained during a lifetime?
(A) Innate immunity
(B) Active immunity
(C) Passive immunity
(D) Both B and C
Which of the following does not act as a protecting barrier for the body surface?
(A) Skin
(B) Mucus
(C) Gastric acid
(D) Salivary amylase
Which of the following conveys the longest-lasting immunity to an infectious agent?
(A) Active immunity
(B) Passive immunity
(C) Both (A) and (B)
(D) None of these
Which of the following cells is involved in cell-mediated immunity?
(A) T-cells
(B) B-cells
(C) Mast cells
(D) Both T and B cells
The branch of biology involved in the study of immune systems in all organisms is called
(A) Botany
(B) Microbiology
(C) Immunology
(D) Biotechnology
Which of the following statements is true about Passive Immunity?
(A) This immunity causes reactions
(B) This immunity develops immediately
(C) This immunity lasts only for a few weeks or months
(D) All of the above
The common disorders caused by a poor immune system include
(A) Epidemic Diseases
(B) Deficiency diseases
(C) Autoimmune diseases
(D) None of the above