Biology MCQ (Multiple Choice Questions) - SchoolingAxis

Biology MCQ (Multiple Choice Questions)

 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- 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- 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- 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- 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- 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- 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- 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- 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- Aschelminthes is also known as 

a. Protozoans 

b. Eumatazoa 

c. Nematodes 

d. Protoctist ancestors 


Answer- Nematodes


Que- Of the following which one is not included in Proterostomes? 

a. Arthropods 

b. Hemichordates 

c. Annelids 

d. Molluses 


Answer- Hemichordates


Que- All of the following are coelomates except 

a. Deuterosomes 

b. Proterosomes 

c. Hemichordates 

d. Aschelminthes 


Answer- Aschelminthes


Que- The name animal is derived from the word. 

a. Anima 

b. Anemia 

c. Aname 

d. All of these 


Answer- Anima


Que- Of the following which one is not the characteristic of Kingdom Animalia. 

a. All animals are ingestive heterotrophs 

b. All animals are eukaryotes 

c. All animals develop from the dissimilar gametes i.e. large sperm and small egg. 

d. It is largest kingdom. 


Answer- All animals develop from the dissimilar gametes i.e. large sperm and small egg.


Que- The radial symmetry is found in the animals of 

a. Protozoa 

b. Porifera 

c. Cnidaria 

d. All of these 


Answer- Cnidaria


Que- All the animals of the grade radiata are 

a. Diploblastic 

b. Triploblastic 

c. Both 

d. Unicellular 


Answer- Diploblastic


Que- Both radial and bilateral symmetry is found in the phylum 

a. Protozoa 

b. Porifera 

c. Echinodermata 

d. None of these 


Answer- Echinodermata


Que- Coelom that develops from the archenteron as outpouching is 

a. Pseudocoelom 

b. Enterocoelom 

c. Schizocoelom 

d. None of these 


Answer- Enterocoelom


Que- The animals in which coelom is formed due to splitting of mesocerm are known as 

a. Pseudocoelous 

b. Schizocoelous 

c. Enterocoelous 

d. Emphicoelous 


Answer- Schizocoelous


Que- Of the following which one is not found in series proterostomia. 

a. Annelida 

b. Arthropoda 

c. Mollusea 

d. Echinodermata 


Answer- Echinodermata


Que- In some cases the blastomere can produce complete embryo the cleavage will be 

a. Spiral and determinate 

b. Radial and indeterminate 

c. Spiral and indeterminate 

d. Radial and determinate 


Answer- Radial and indeterminate


Que- The fate of each blastomere is foretold. The cleavage will be as 

a. Spiral and indeterminate 

b. Radial and indeterminate 

c. Radial and indeterminate 

d. Spiral and determinate 


Answer- Spiral and determinate


Que- Of the following which one is non-cellular in most cases in animals? 

a. Mesenchyme 

b. Sclerenchyma 

c. Chlorenchyma 

d. Mesoderm 


Answer- Mesenchyme


Que- In most triploblasts after embryonic development the three layers are represented as 

a. Separate layers of cells 

b. Structures formed from them 

c. Structures associated with them 

d. Their functions in body 


Answer- Structures formed from them


Que- Of the following which one is not the characteristic of triploblasts. 

a. All of them have blood vascular system 

b. They may be coelomate pseudocoelomate or acoelomate 

c. They are included in grade bilateria 

d. All of them have digestive system 


Answer- All of them have blood vascular system


Que- The system well - developed in the acoelomate is 

a. Excretory system 

b. Nervous system 

c. Both of these 

d. Transport system 


Answer- Both of these


Que- Pseudocoelem develops from 

a. Blastopore 

b. Plastoquinone 

c. Blastocoel 

d. Splitting of mesoderm 


Answer- Blastocoel


Que- The function of coelom is 

a. To increase the size of the animals 

b. To help in the functioning of reproductive system 

c. To provide space for the development of organs and systems 

d. None of these 


Answer- To provide space for the development of organs and systems


Que- Coelom is lined by 

a. Parietal mesoderm 

b. Visceral mesoderm 

c. Mesoderm 

d. Both A & B 


Answer- Both A & B


Que- In acoelomates gut is _____ in origin. 

a. Ectodermal 

b. Endodermal 

c. Mesodermal 

d. None of these 


Answer- Endodermal


Que- Sperms are _____ in origin. 

a. Ectodermal 

b. Mesodermal 

c. Endodermal 

d. None of these 


Answer- Mesodermal


Que- A sponge of Antarctica which is more than a meter tall is 

a. Scolymastra joubini 

b. Euplectella 

c. Spongilla 

d. Leucoselenia 


Answer- Scolymastra joubini


Que- Venus flower basket is also known as 

a. Sycon 

b. Euplectella 

c. Leucoselenia 

d. Spongilla 


Answer- Euplectella


Que- Inner layers of the sponges are made up of 

a. Pinacocytes 

b. Choanoderm 

c. Choanoytes 

d. Pinacoderm 


Answer- Choanoytes


Que- Porifera range in size from 

a. Few millimeter wide to more than one meter tall 

b. Few centimeter wide to more than one meter tall 

c. Few decimeter wide to more than one meter tall 

d. One meter wide to more than millimeter tall. 


Answer- Few millimeter wide to more than one meter tall


Que- The internal buds are known as 

a. Spicules 

b. Choanocytes 

c. Gemmules 

d. None of these 


Answer- Gemmules


Que- The sponges in which sperms develop first are included in the category of 

a. Peritandrous 

b. Pertandrous 

c. Protendrous 

d. Protandrous 


Answer- Protandrous


Que- 80% of the food of sponges consists of 

a. Detrital organic particles 

b. Zooplankton and small animals 

c. Phytoplanktons 

d. all of these 


Answer- Detrital organic particles


Que- The skeleton of the sponges is in the form of variously shaped needle like structures called 

a. Stripules 

b. Spicules 

c. Brails 

d. Spines 


Answer- Spicules


Que- The skeleton of sponges is made up of 

a. Calcium 

b. Silica 

c. Both of these 

d. None of these 


Answer- Both of these


Que- Sperms released in water are carried to the mesenchyme in sponges by 

a. Amoeboid cell 

b. Stipules 

c. Spicules 

d. Spines 


Answer- Amoeboid cell


Que- Gut in pseudocoelomates is made from 

a. Ectoderm 

b. Mesoderm 

c. Endoderm 

d. All of these 


Answer- Endoderm


Que- In sponges fertilization takes place in 

a. Ectoderm 

b. Mesenchyme 

c. Endoderm 

d. Uterus 


Answer- Mesenchyme


Que- The single main opening of the sponge cavity is 

a. Osculum 

b. Ostia 

c. Spongocoel 

d. None of these 


Answer- Osculum


Que- Enteron in coelenterates acts as 

a. Digestive cavity 

b. Body cavity 

c. Transporting cavity 

d. all of these 


Answer- all of these


Que- Which of the following are motile zooids in cnidarians? 

a. Polyps 

b. Medusae 

c. Both of these 

d. None of these 


Answer- Medusae


Que- Exoskeoeton of coelenterates terates is made up to 

a. Calcium 

b. Silica 

c. Chitin 

d. Both A & B 


Answer- Calcium


Que- All of the following coelenterates show alternation of generation except 

a. Hydra 

b. Obelia 

c. Aurelia 

d. None of these 


Answer- Hydra


Que- All of the following are tue for platyhelminthes except 

a. Flatwarms 

b. Triploblastic 

c. Coelomate 

d. Bilateral symmetry 


Answer- Coelomate


Que- Excretory system of platyhlminthes consists of 

a. Nephridia 

b. Flame cells 

c. Malpighian tubules 

d. Nephrons 


Answer- Flame cells


Que- Free living example of platyhelminthes is 

a. Dugesia 

b. Fasciola 

c. Taenia 

d. None of these 


Answer- Dugesia


Que- Psedudocoelom is character of 

a. Coelenterates 

b. Platyhelminthes 

c. Aschelminthes 

d. Annelids 


Answer- Aschelminthes


Que- Nervous system of nematods consists of 

a. Ventral nerve cord 

b. Dorsal nerve cord 

c. Lateral nerve cord 

d. All of these 


Answer- All of these


Que- Which system is present in nematods? 

a. Sac - like digestive system 

b. Tube - like digestive system 

c. Circulatory system 

d. Respiratory system 


Answer- Tube - like digestive system


Que- Pin warm is common name used for 

a. Rhabditis 

b. Enterobius vermicularis 

c. Ancylostoma duodenale 

d. Taenia solium 


Answer- Enterobius vermicularis


Que- Which of following system is segmentally arranged in annelids? 

a. Excretory system 

b. Digestive system 

c. Criculatory system 

d. Nervous system 


Answer- Criculatory system


Que- Marine example of annelid is 

a. Neries 

b. Stylaria 

c. Earthworm 

d. Leech 


Answer- Neries


Que- _______ are the first group of invertebrates which have developed a closed circulatory system. 

a. Nematods 

b. Annelids 

c. Arthropods 

d. Molluscs 


Answer- Annelids


Que- The organs of locomotion in annelids are 

a. Muscles 

b. Hydrostatic skeleton 

c. Parapodia 

d. Setae 


Answer- Setae


Que- Polychaeta have 

a. Tentacles 

b. Palps 

c. Eyes 

d. All of these 


Answer- All of these


Que- _______ are believed to have common origin with annelids. 

a. Nematods 

b. Arthropods 

c. Molluscs 

d. None of these 


Answer- Arthropods


Que- Aquatic arthropods respire through 

a. Spiracles 

b. Gills 

c. Book lungs 

d. Both b and c 


Answer- Both b and c


Que- Main blood vessel of arthropods usually 

a. Lies on dorsal side 

b. Lies on ventral side 

c. Lies on lateral side 

d. Is not present 


Answer- Lies on dorsal side


Que- True metamorphosis is not present in 

a. Crustacea 

b. Insecta 

c. Arachnida 

d. Myriapoda 


Answer- Arachnida


Que- Second largest phylum of invertebrates is 

a. Porifera 

b. Arthropoda 

c. Mollusca 

d. Chordata 


Answer- Mollusca


Que- Mantle in molluscs is present over 

a. Head 

b. Ventral muscular foot 

c. Dorsal visceral region 

d. All of these 


Answer- Dorsal visceral region


Que- Circulatory system is open type in all of the following except 

a. Arthropoda 

b. Gastropoda 

c. Pelecypoda 

d. Cephalopoda 


Answer- Cephalopoda


Que- Body is globular in 

a. Cake urchin 

b. Sea Urchin 

c. Sea cucumber 

d. Brittle star 


Answer- Sea Urchin


Que- Prechordates is another name used for 

a. Echinoderms 

b. Hemichordates 

c. Vertebrates 

d. Chordates 


Answer- Hemichordates


Que- Notochord is present throughout life in 

a. Urochordates 

b. Cephalochordates 

c. Chordates 

d. Vertebrates 


Answer- Cephalochordates


Que- Body is eel like in 

a. Cyclostomata 

b. Chondrichthyes 

c. Osteichthyes 

d. None of these 


Answer- Cyclostomata


Que- Which of the following fishes contained lungs? 

a. Lamprey 

b. Perch 

c. Plaice 

d. Dipnoi 


Answer- Dipnoi


Que- Shell of egg is leathery in appearance in 

a. Amphibians 

b. Reptiles 

c. Birds 

d. Prototherians 


Answer- Reptiles


Que- Mammals became dominant in 

a. Proterozoic era 

b. Mesozoic era 

c. Paleozoic era 

d. Cenozoic era 


Answer- Cenozoic era


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- 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.


Que- Quantitative study of energy relationships in biological systems obeys. 

a. Bioenergetics 

b. Laws of thermodynamics 

c. Laws of thermo chemistry 

d. Laws of chemical energetic 


Answer- Laws of thermodynamics


Que- The organisms able to use sunlight directly as a source of energy are 

a. Plants 

b. Animals 

c. Omnivores 

d. Fungi 


Answer- Plants


Que- Of the following which one is not an energy releasing process? 

a. Glycolysis 

b. Respiration 

c. Photosynthesis 

d. Kreb's cycle 


Answer- Photosynthesis


Que- Net yield of H2O in Photosynthesis is 

a. 1 molecule 

b. 6 molecules 

c. 3 molecules 

d. 0 molecule 


Answer- 0 molecule


Que- The point at which there is no net exchange of gases between leaves and atmosphere is known as 

a. Neutral point 

b. Compensation point 

c. Parallel point 

d. Competitive point 


Answer- Compensation point


Que- Van neil hypothesis about the production of oxygen during phosynthesis was based on the study and investigations on 

a. Bacteria 

b. Algae 

c. Protenema 

d. Cyanobacteria 


Answer- Bacteria


Que- Visible light used in photosynthesis ranges from: 

a. 300 - 700 nm in wavelength 

b. 350 - 750 nm in wavelength 

c. 380 - 750 nm in wavelength 

d. 390 - 790 nm in wavelength. 


Answer- 380 - 750 nm in wavelength


Que- Which of the following light is least absorbed by the plants: 

a. Orange 

b. Red 

c. Blue 

d. Green 


Answer- Green


Que- Which of the light is mainly absorbed by the plants: 

a. Orange 

b. Red 

c. Green 

d. Both A and B 


Answer- Both A and B


Que- Chlorophyll is insoluble in: 

a. Carbon tetrachloride 

b. Alcohol 

c. Organic solvents 

d. Water 


Answer- Water


Que- Which of the following statement about the head of a chlorophyll molecule is incorrect: 

a. It is a porphyrin ring or tetrapyrrole ring structure 

b. It is flat, square and light absorbing 

c. Composed of carbon and nitrogen atoms with Magnesium as central metal ion, which is coordinated with nitrogen. 

d. It is hydrophobic 


Answer- It is hydrophobic


Que- Molecular formula of chlorophyll 'a' molecule is: 

a. C55H72O5N4Mg 

b. C55H70O6N4Mg 

c. C50H72O6N4Mg 

d. C55H70O5N4Mg 


Answer- C55H72O5N4Mg


Que- Which of the following pigment is Blue- green in colour: 

a. Chlorophyll a 

b. Chlorophyll b. 

c. Chlorophyll c 

d. Chlorophyll d. 


Answer- Chlorophyll a


Que- Light reaction takes place on/in 

a. Thylakoid 

b. Storma 

c. Chloroplast 

d. Grana 


Answer- Grana


Que- Thylakoids in chloroplasts are stacked into 

a. Grana 

b. Stroma 

c. Nucleus 

d. None of these 


Answer- Grana


Que- The dense fluid filled region in the chloroplast is 

a. Grana 

b. Stroma 

c. Thylakoid 

d. None of these 


Answer- Stroma


Que- Chlorophylls are found embedded in the ______ membranes 

a. Stroma 

b. Grana 

c. Thylakoid 

d. Intergrana 


Answer- Thylakoid


Que- Xanthophylls are ______ pigments 

a. Yellow 

b. Red 

c. Orange 

d. Green 


Answer- Yellow


Que- Chlorophylls mainly absorb ____ wavelengths 

a. Orange - blue 

b. Violet - red 

c. Yellow - orange 

d. Orange - red. 


Answer- Orange - red.


Que- Deficiency of ________ causes yellowing in plants 

a. Magnesium 

b. Iron 

c. Chlorine 

d. Oxygen 


Answer- Magnesium

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