Biology MCQ (Multiple Choice Questions) - SchoolingAxis

 

Biology MCQ (Multiple Choice Questions)

Que- Megaphylls are characteristic for____________? 

a. Ferns  

b. Seed plants  

c. Both of these  

d. None of these 


Answer- Seed plants


Que- In bryophytes fertilization takes place in___________? 

a. Antheridia  

b. Archegonia  

c. water  

d. Ovule 


Answer- Archegonia


Que- The dichotomously branching system has shape similar to________________? 

a. U  

b. R  

c. Y  

d. Fork 


Answer- Y


Que- Which of the following statement about alternation of generation in bryophytes is incorrect? 

a. It involves alternation of morphologically different generations  

b. Their gametophyte is independent while sporophyte depends upon gametophyte for nutrition.  

c. Both the gametophyte and sporophytes are haploid generations thus can produce haploids gametes to continue the diploid number on fertilization  

d. Spore formation occurs through meiosis 


Answer- Both the gametophyte and sporophytes are haploid generations thus can produce haploids gametes to continue the diploid number on fertilization


Que- The space between the overtopped dichotomous branches was occupies by a sheet of _________ cells during evolution of megaphyllas? 

a. Sclerenchyma  

b. Chlorenchyma  

c. Parenchyma  

d. Collenchyma 


Answer- Chlorenchyma


Que- Production of two types of spores is known as________________? 

a. Heterospory  

b. Homospory  

c. Heterogamy  

d. Gamospory 


Answer- Heterospory


Que- Antherozoids the male gamete in bryophytes are attracted towards Archegonium i.e. female sex organ by____________? 

a. Phototactic phenomenon  

b. Chemotactic phenomenon  

c. Geotropic phenomenon  

d. Chemotropic movement 


Answer- Chemotactic phenomenon


Que- The zygote formed in liverworts is___________? 

a. Unicellular  

b. Mulicellular  

c. Multinucleate  

d. None of these 


Answer- Unicellular


Que- Ground pries are also known as___________? 

a. Lycopods  

b. Spike mosses  

c. Both of these  

d. None of these 


Answer- Both of these


Que- Sporophyte is____________? 

a. Monoploid  

b. Haploid  

c. Diploid  

d. Polyploidy 


Answer- Diploid


Que- Which of the following plant group first formed true leaves________________? 

a. Psilopsida  

b. Lycopsida  

c. Sphenopsida  

d. Pteropsida 


Answer- Lycopsida


Que- Megaphylls i.e. leaves with divided veins with an expanded lamina is a dharacteristic of ___________________? 

a. Lycopods  

b. Ferns  

c. Seed plants  

d. Both b and c 


Answer- Both b and c


Que- Mosses are included in sub-division of ___________? 

a. Anthoceropsida  

b. Hepaticopsida  

c. Bryopsida  

d. Lycopsida 


Answer- Bryopsida


Que- The arrangement of unequal dichotomous branches in one plane during evolution of leaves is called_____________? 

a. Overtopping  

b. Fusion  

c. Webbing  

d. Planation 


Answer- Planation


Que- The simplest of all bryophytes are___________? 

a. Thallophytes  

b. Embryophytes  

c. Mosses  

d. Liverworts 


Answer- Liverworts


Que- Which of the following statement about filicinae a group of tracheophytes is incorrect_________________? 

a. They belong to sphenopsida  

b. They are seedless and their leaves are called fronds  

c. They live in shady and moist areas.  

d. They show circinate vernation. 


Answer- They belong to sphenopsida


Que- Antheridiophore and archegoniophore are found in_____________? 

a. Marchantia  

b. Funaria  

c. Both of these  

d. None of these 


Answer- Both of these


Que- Due to which property of Adiantum and example of Filicinae is called Maidenhairfern________________? 

a. Its short thick branched horizontally growing rhizome  

b. Fibrous adventituous roots arise from the lower side of rhizome  

c. Shows heteromorphic alternation of generation  

d. Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures 


Answer- Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures


Que- Specialized protective coverings around megasporangium which vary in number are called_________________? 

a. Sporangium  

b. Integuments  

c. Ovule  

d. Pericarp 


Answer- Integuments


Que- Protonema is___________? 

a. Thallus like  

b. Algae like  

c. Fungus like  

d. Plant like 


Answer- Algae like


Que- In which group of tracheophytes ovules are born on the exposed surface of megasporophylls______________? 

a. Spheospsida  

b. Filicineae  

c. Gymnosperms  

d. Angiosperms 


Answer- Gymnosperms


Que- Pinus Taxus and Picea belong to_________________? 

a. Spheospsida  

b. Filicineae  

c. Gymnosperms  

d. Angiosperms 


Answer- Gymnosperms


Que- Of the following four options which one is most advanced? 

a. Anthoceropsida  

b. Bryopsida  

c. Hepaticopsida  

d. None of these 


Answer- Anthoceropsida


Que- In life cycle of Pinus megaspores produced by megasporangium divide into 4 megaspores by__________________? 

a. Mitosis  

b. Meiosis  

c. Both depending upon the conditions  

d. None of these 


Answer- Meiosis


Que- In Hornworts the band of meristematic tissue is found near_____________? 

a. Foot  

b. Gamete producing region  

c. Spore producing region  

d. At junction of A & B 


Answer- At junction of A & B


Que- Microspore of a seed plant that contain male gametophyte including the gamete is called_______________? 

a. Pollen grain  

b. Ovule  

c. Microgametophyte  

d. Microsporangium 


Answer- Pollen grain


Que- The part of sporophyte which is called sporangium is____________? 

a. Capsule  

b. Foot  

c. Stalk  

d. None of these 


Answer- Capsule


Que- Monocots are characterized by___________? 

a. Number of sepals and petals are 2 or multiple of 2  

b. Number of sepals and petals are 3 or multiple of 3  

c. Number of sepals and petals are 4 or multiple of 4  

d. Number of sepals and petals are 5 or multiple of 5 


Answer- Number of sepals and petals are 3 or multiple of 3


Que- The first cell of the sporophyte generation is______________? 

a. Oospore  

b. Spore mother cell  

c. Spore  

d. Gamete 


Answer- Oospore


Que- Which of the following statement about dicots is incorrect _________________? 

a. They have 4 or 5 sepals and petals or their multiple.  

b. They have parallel vein pattern on their leaves  

c. They are both herbaceous and woody  

d. Vascular bundles are ring shaped in their stems. 


Answer- They have parallel vein pattern on their leaves


Que- Maize is an example of_________________? 

a. Monocot  

b. Dicot  

c. Gymnosperms  

d. none of these 


Answer- Monocot


Que- Stem of Psilophyton an example of psilogsida is differentiated into an underground rhizome and an aerial part both of which are _________ branched 

a. Isotomous  

b. Dichotomously  

c. Trichotomously  

d. Multichotomously 


Answer- Dichotomously


Que- Which of the following group of tracheophyta has expanded or scale like leaves which are alwaysed arranges in whorls? 

a. Psilopsida  

b. Lycopsida  

c. Sphenopsida  

d. Prteropsida 


Answer- Sphenopsida


Que- Sporangia of which of the following tracheopytes develop singly on the upper side of sporophylls which may or may not be arranged to form strobili_____________? 

a. Psilopsida  

b. Lycopsida  

c. Sphenopsida  

d. Prteropsida 


Answer- Lycopsida


Que- Which of the following tracheophytes are leafless? 

a. Psilopsida  

b. Lycopsida  

c. Sphenopsida  

d. Prteropsida 


Answer- Psilopsida


Que- Chlorosis, i.e., yellowish hue on the leaves results from_____________? 

a. Accumulation of toxic waste products in leaves.  

b. Deficiency of chlorophyll.  

c. Short supplies of mineral nutrients in the soil.  

d. All of these 


Answer- All of these


Que- Chemically auxins are____________? 

a. Indole propionic acid.  

b. Indole carboxylic acid.  

c. Indole acetaldehyde  

d. Indole acetic acid. 


Answer- Indole acetic acid.


Que- Gibberellins may be substituted for ___________ light, therefore promote flowering in long day plants? 

a. White  

b. Red  

c. Blue  

d. Green 


Answer- Red


Que- Which of the following is antagonist to Auxin in terms of promotion of stem growth______________? 

a. Gibberellins  

b. Cytokinins  

c. Abscisic Acid  

d. none of these. 


Answer- Abscisic Acid


Que- Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering______________? 

a. Gibberellins  

b. Cytokinins  

c. Auxins  

d. Ethene. 


Answer- Gibberellins


Que- The only promoter of leaf senescence in the following plant hormones is________________? 

a. Gibberellins  

b. Cytokinins  

c. Auxins  

d. Abscisic Acid 


Answer- Abscisic Acid


Que- Which of the following is used in brewing industry to promote malting_______________? 

a. Gibberellins  

b. Cytokinins  

c. Auxins  

d. Abscisic Acid 


Answer- Gibberellins


Que- Which type of the receptors are present in the ear__________________? 

a. Chemoreceptors  

b. Mechanoreceptors  

c. Photoreceptors  

d. Thermoreceptors 


Answer- Mechanoreceptors


Que- Type of sensations carried by nociceptors are_________________? 

a. Touch.  

b. Temperature.  

c. Pressure.  

d. Pain 


Answer- Pain


Que- Which type of sensory structures carrying the touch sensations are present in papillae extending into ridges of the fingertips___________________? 

a. Hair end organs  

b. Meissner's Corpuscles  

c. Pacinian corpuscles  

d. None of these 


Answer- Meissner's Corpuscles


Que- Which type of sensory structures carry deep pressure and vibration sensations______________? 

a. Hair end organs  

b. Meissner's Corpuscles  

c. Pacinian corpuscles  

d. none of these 


Answer- Pacinian corpuscles


Que- ____________ is simplest form of learning. 

a. Imprinting  

b. Habituation  

c. Insight learning  

d. Latent learning 


Answer- Habituation


Que- ____________ was first to propose an objective definition of instinct. 

a. Thorpe  

b. Darwin  

c. Pavlov  

d. Kohler 


Answer- Darwin


Que- Types of behaviour enabling pillbugs to reach moist area is___________? 

a. Kinesis  

b. Taxes  

c. Instinct  

d. Learning 


Answer- Kinesis


Que- Nissl's granules are present in which part of the neuron_________________? 

a. Axoplasm  

b. Myelin sheath  

c. Dendrite  

d. Soma 


Answer- Soma


Que- All of the following are similarities between nervous and endocrine system except:_____________? 

a. Produce chemical messengers  

b. Release chemical messengers in extracellular space  

c. Homestatic in function  

d. Having slow but prolonged effects 


Answer- Having slow but prolonged effects


Que- Which of the following statement about neuron is incorrect___________________? 

a. They not only conduct impulses but also generate them  

b. They are not the only cellular component of nervous system  

c. They may show limited regenerative capabilities  

d. Like all the living cell, when they mature and divide to form similar cells 


Answer- Like all the living cell, when they mature and divide to form similar cells


Que- Secretin is a hormone produced by___________? 

a. Stomach  

b. Liver  

c. Pancreas  

d. Duodenum 


Answer- Duodenum


Que- Type of neurons found exclusively in CNS are_____________? 

a. Sensory neurons  

b. Motor neurons  

c. Associative neurons  

d. None of these 


Answer- Associative neurons


Que- Maintenance of normal resting potential via movement of K+ inside the cell and na+ out is a/an ___________ process? 

a. Active  

b. Passive  

c. Diffusional  

d. None of these. 


Answer- Active


Que- Cell membrane under resting conditions is impermeable to all the ions except_____________? 

a. Na+  

b. K+  

c. Cl-  

d. PO4-2 


Answer- K+


Que- Grave's disease is produced due to____________? 

a. Undersecretion of thyroxin  

b. Overproduction of thyroxin  

c. Undersecretion of corticosteroids  

d. Overproduction of corticosteroids 


Answer- Overproduction of thyroxin


Que- MSH is produced from___________? 

a. Anterior pituitary  

b. Median pituitary  

c. Posterior pituitary  

d. None of these 


Answer- Median pituitary


Que- At the induction of action potential opening of Na+ gate with influx of Na+ is a ___________ processes? 

a. Active transport  

b. Passive transport  

c. Diffusion  

d. none of these 


Answer- Passive transport


Que- Acromegaly is caused due to oversecretion of____________? 

a. STH  

b. TSH  

c. ACTH  

d. Thyroxin 


Answer- Thyroxin


Que- Insulin and glucagons are __________ in nature. 

a. Protein  

b. Amino acid derivative  

c. Polypeptide  

d. Steroid 


Answer- Protein


Que- Normal resting membrane potential of a neuron is_____________? 

a. – 50 mv  

b. – 60 mv  

c. – 70 mv  

d. – 80 mv 


Answer- – 70 mv


Que- Insufficient secretion of iodothyroxine in adults causes____________? 

a. Myxedema  

b. Cretinism  

c. Goiter  

d. Exopthalmic goiter 


Answer- Myxedema


Que- Normal action potential of a neuronal cell is ___________? 

a. plus 50 mv  

b. plus 60 mv  

c. plus 70 mv  

d. plus 80 mv 


Answer- plus 50 mv


Que- Number of pairs of cranial nerves is__________? 

a. 10.0 

b. 11.0 

c. 12.0 

d. 13.0 


Answer- 12.0


Que- Na+ -K+ ATPase pump is important for_______________? 

a. Maintenance of resting potential  

b. Massive out flux of K+ after depolarization  

c. Recovery of resting potential  

d. Conversion of resting potential into action potential 


Answer- Recovery of resting potential


Que- Which of the following has no central nervous system? 

a. Hydra  

b. Man  

c. Planaria  

d. Cockroach 


Answer- Hydra


Que- Maximum speed of nerve impulse transmission is____________? 

a. 100 m/sec  

b. 110 m/sec  

c. 120m/sec  

d. 130 m/sec. 


Answer- 120m/sec


Que- Which of the following are responsible for the detection of changes in environment? 

a. Receptors  

b. Neurons  

c. Effectors  

d. All of these 


Answer- Receptors


Que- Any change in the environment of an organism is called___________? 

a. Stimulus  

b. Variation  

c. Response  

d. Reaction 


Answer- Stimulus


Que- Co-ordination results in_____________? 

a. Regulation of body functions  

b. Organization of body functions  

c. Integration of body functions  

d. All of these 


Answer- All of these


Que- Which of the followings are effectors______________? 

a. Muscles  

b. Glands  

c. Sensory organs  

d. Both 'a' & 'b' 


Answer- Both 'a' & 'b'


Que- Hydra has___________? 

a. Brain  

b. Nerves  

c. Neuron-cells  

d. All of these 


Answer- Neuron-cells


Que- Co-ordination in man is brought about by___________? 

a. Nervous system  

b. Endocrine system  

c. Both of these  

d. none of these. 


Answer- Both of these


Que- Which of the followings is missing from the nervous system of planaria_____________? 

a. Ganglia  

b. Longitudinal nerves  

c. Lateral nerves  

d. none of these 


Answer- none of these


Que- Which of the following transmits nerve impulse from receptors to central nervous system? 

a. Sensory neuron  

b. Motor neuron  

c. Associative neuron  

d. none of these. 


Answer- Sensory neuron


Que- In which of the following neurons length of dendrite is greater than axon_______________? 

a. Sensory neuron  

b. Motor neuron  

c. Associative neuron  

d. none of these. 


Answer- Sensory neuron


Que- Which of the following neuron has a single long dendron? 

a. Sensory neuron  

b. Motor neuron  

c. Associative neuron  

d. none of these. 


Answer- Sensory neuron


Que- Which of the following cytoplasmic extensions carry the message toward the cell body___________? 

a. Dendrites  

b. Axon  

c. Both of these  

d. none of these 


Answer- Dendrites


Que- Microscopic gaps between the neuron endings are called__________? 

a. Transmitters  

b. Synapses  

c. Pores  

d. Nodes 


Answer- Synapses


Que- What is the function of synapse________________? 

a. To allow nerve impulse to move in backward direction  

b. To decrease the speed of nerve impulse  

c. To stop the nerve impulse  

d. To provide cytoplasmic connection between neurons. 


Answer- To decrease the speed of nerve impulse


Que- Under resting membrane potentials: 

a. Outer surface of neuron is more positive  

b. Inner surface of neuron is more positive  

c. Both of these surfaces are equally positive  

d. none of these. 


Answer- Outer surface of neuron is more positive


Que- Which of the following ions are involved in the initiation of nerve impulse_______________? 

a. Na+  

b. K+  

c. Fe  

d. none of these 


Answer- Na+


Que- Central nervous system of man consists of______________? 

a. Brain  

b. Spinal cord  

c. Both of these  

d. none of these 


Answer- Both of these


Que- Reflex actions below the neck are under control of____________? 

a. Brain  

b. Spinal cord  

c. Hypothalamus  

d. none of these. 


Answer- Spinal cord


Que- Which of the following is present inside the vertebral column______________? 

a. Brain  

b. Spinal cord  

c. Both of these  

d. none of these. 


Answer- Spinal cord


Que- Which of the following is largest part of brain? 

a. Cerebrum  

b. Cerebellum  

c. Medulla oblongata  

d. Thalamus 


Answer- Cerebrum


Que- Which of the following is second largest part of the brain_______________? 

a. Cerebrum  

b. Cerebellum  

c. Thalamus  

d. Hypothalamus 


Answer- Cerebellum


Que- Intelligence is under the control of____________? 

a. Cerebrum  

b. Cerebellum  

c. Thalamus  

d. Hypothalamus 


Answer- Cerebrum


Que- Which of the following acts as thermoregulator? 

a. Cerebrum  

b. Cerebellum  

c. Thalamus  

d. Hypothalamus 


Answer- Hypothalamus


Que- Which of the following allows precise muscular movements_______________? 

a. Cerebrum  

b. Cerebellum  

c. Thalamus  

d. Hypothalamus 


Answer- Cerebellum


Que- It is one of the convulsive disorders of nerves which are characterized by abrupt transient symptoms of motor, sensory, psychic or autonomic nature________________? 

a. Parkinson's disease  

b. Epilepsy  

c. Alzheimer's discease  

d. Dementia 


Answer- Epilepsy


Que- Value of resting membrane potential is_____________? 

a. 0.03 V  

b. 0.05 V  

c. 0.07 V  

d. 0.09V 


Answer- 0.07 V


Que- Receptors for hearing come under heading of___________? 

a. Chemical  

b. Mechanical  

c. Photo  

d. Nociceptors 


Answer- Mechanical


Que- Which of the following feature is not related to neuron? 

a. Conduction  

b. Regeneration  

c. Reflex  

d. Movement 


Answer- Regeneration


Que- Which of the following is a chemical link between catabolism and anabolism? 

a. AMP  

b. ADP  

c. ATP  

d. All of these 


Answer- ATP


Que- Photosynthesis is process in which ________ compounds of carbon (CO2) and hydrogen (H2O) are reduced to carbohydrate like (glucose) using light energy. 

a. Organic  

b. Energy rich  

c. Energy poor  

d. Reduced 


Answer- Energy poor


Que- C6H12O6 + 6O2 ? 6CO2 + 6H20 + ENERGY represents:____________? 

a. Photosynthesis  

b. Aerobic respiration  

c. Anaerobic respiration  

d. Respiration 


Answer- Aerobic respiration


Que- Bacteriochlorophylls does not include________________? 

a. Chlorophyll e  

b. Chlorophyll d  

c. Chlorophyll a  

d. Chlorophyll c 


Answer- Chlorophyll a


Que- At which times there is no net gaseous exchange between leaves and the atmosphere. 

a. Day time.  

b. Night time.  

c. Dawn & Dusk.  

d. Mid night. 


Answer- Dawn & Dusk.

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