Biology Mcqs – (Science) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests
“ Biology Mcqs “. Tab this page to check “Latest Biology MCQs” for the preparation of competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs and others. The most occurred mcqs of Biology in past papers. Past papers of Biology mcqs. Past papers of Biology MCQs. Biology Mcqs are the necessary part of any competitive / job related exams. The Biology mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Biology mcqs. The Important series of Biology Mcqs are given below:
Dipeptides into amino acids are are converted through_____________?
A. Pepsin
B. Erypsin
C. Amino peptidase
D. Trypsin
Magnesium is present in which of the following__________________?
A. ATP
B. Cytochromes
C. Chlorophyll
D. Haemoglobin
Deficiency of which of the following causes chlorosis__________________?
A. Magnesium
B. Nitrogen
C. Iron
D. Both A and B
Mastication is carried out by__________?
A. Teeth
B. Smooth muscles
C. Tongue
D. All of these
Deficiency of K+ causes_____________?
A. No electron transport chains
B. Stunted growth & strong chlorosis
C. Premature death of leaves
D. Stunted growth of roots
Masses of dilated tortuous veins in the anorectal mucosa are known as___________?
A. Ulcer
B. Bulimia
C. Adipose tissue
D. Hemorrhoids
Puccinia is a parasitic___________?
A. Animal
B. Fungus
C. Plant
D. Algae
An illness which largely affects girls usually just after the onset of puberty.
A. Obesity
B. Bulimia nervosa
C. Anorexia nervosa
D. None of these
Autotrophic organisms can exist in an exclusively ________________ environment?
A. Wet
B. Inorganic
C. Organic
D. Terrestrial
Loss of appetite due to the fear of becoming obese is____________?
A. Anorexia nervosa
B. Piles
C. Bulimia nervosa
D. Dyspepsia
Strong chlorosis is due to the deficiency of _____________ in plants?
A. Potassium
B. Nitrogen
C. Magnesium
D. Phosphorus
Stunted growth of roots is due to the deficiency of____________in plants?
A. Magnesium
B. Potassium
C. Phosphorus
D. Iron.
The liquid that escapes during defrosting frozen meat contains _____ bacteria?
A. Nitrobacter
B. Campylobacter
C. Azobacter
D. Salmonella
One of the commonest cause of food poisoning are the toxins produced by__________?
A. Nitrosomonas
B. Azobacter
C. Campylobacter
D. Nitrobacter
Puccinia commonly destroys______________?
A. Tomato
B. Corn
C. Dodder
D. Wheat
Nodules on roots of leguminous plants have __________ bacteria?
A. Nitrifying
B. Nitrogen fixing
C. Anaerobic
D. Ammonifying
Earthworm is an example of ______________feeder?
A. Detritus
B. Macrophageus
C. Fluid
D. Filter
All of the insectivorous plants are true________________?
A. Carnivores
B. Autotrophes
C. Heterotrophs
D. Saprotrophs
Of the following, which one has more variety of nutrition________________?
A. Animals
B. Plants
C. Bacteria
D. Fungi
Incomplete or imperfect digestion is known as________?
A. Anorexia nervous
B. Dyspepsia
C. Obesity
D. Bulimia nervosa
Biology Mcqs
The leaf is bilobed with midrib between them. The plant is____________?
A. Pitcher plant
B. Dionaea
C. Saraccnia
D. None of these
Anus is surrounded by _____ types of muscles?
A. 2
B. 1
C. 3
D. 4
Of the following, which one is missing in herbivores_______________?
A. Incisors
B. Canines
C. Premolars
D. Molars.
Certain types of whales are also __________ feeder?
A. Macrophagous
B. Fluid
C. Filter
D. None of these
____________is about 2.4 meter in length and comprising about two fifth of the small intestine?
A. Ileum
B. Jejunum
C. Duodenum
D. Caecum
Hydra is an example of ______________ feeder?
A. Fluid
B. Macrophagous
C. Fluid
D. All of these
Hepatic and Pancreatic secretions are also stimulated by a hormone produced by the intestinal mucosa. The hormone is___________?
A. Gastrin
B. Creatin
C. Secretin
D. Pepsin
Parasites capable of living independently of its host at times is called as ___________ parasite?
A. Strict
B. Obligate
C. Facultative
D. Endoparasite
A painful burning sensation produced in the chest cavity usually associated with the back flush of acidic chyme into the esophagus is__________?
A. Peristalsis
B. Pyrosis
C. Pyrolysis
D. Dyspepsia
In planaria, numerous small branches which end blindly are called as__________?
A. Hepatic caeca
B. Intestinal caeca
C. Digestive tract
D. Both B & C
Midgut in cockroach is a short narrow tube called____________?
A. Gizzard
B. Hepatic caeca
C. Stomach
D. Rectum
Hunger contractions are _____ contractions?
A. Voluntary
B. Peristalsis
C. Antiperistalsis
D. None of these
The partly digested food is stored in________in cockroach?
A. Hepatic caeca
B. Crop
C. Gizzard
D. Rectum
How many species of fungi are known till now?
A. 10000
B. 100000
C. 1000
D. 10000000
Which of the following group represent pathological fungi______________?
A. Penicillium
B. Rusts smuts and molds
C. Mushrooms morels and truffles
D. All of these
Death cap/death angel (Amanita) and Jack O Latern mushroom are examples of__________?
A. Both of these
B. Poisonous mushrooms
C. Edible mushrooms
D. None of these
Which one of the following is different from all the rest regarding the number of cells inits body_______________?
A. Rusts
B. Molds
C. Mushrooms
D. Yeasts
Fungi which get their food directly from dead organic matter are called______________?
A. Predators
B. Parasitic fungi
C. Mutualists
D. Decomposers
How many species of mushrooms are edible?
A. 3000
B. 200
C. 100
D. 4000
Root like structure in saprotrophic fungi are called_______________?
A. Rhizodis
B. Hyphae
C. Haustoria
D. Constricting rings
Penicillium reproduce via___________?
A. Budding
B. Conidia
C. Spores
D. Fragmentation
Those fungi which can grow only on their living host and cannot be grown on available defined growth culture medium e.g. various mildews and most rust species are called_____________?
A. Facultative parasitic fungi
B. Obligate parasitic fungi
C. Parasitic fungi
D. All of these
Mode of nutrition in penecillium is____________?
A. Saprotrophs
B. Predators
C. Parasitic
D. Mutualistics
Oyster mushroom is an example of predator fungi which attack on______________?
A. Tape worms
B. Pin warms
C. Round worms
D. Platehelminthes
All such fungi in which sexual phase has not been observed are present in___________?
A. Zygomycota
B. Basidiomycota
C. Ascomycota
D. Deuteromycota
Lichen is a symbiotic mutualistic association of fungi with______________?
A. Roots of vascular plants
B. Autotrophs
C. Green algae and cyanobacterium
D. Leguminous plants
Foliose lichen are_____________?
A. Branching
B. Stem like
C. Leaf like
D. Crust like
How many species of ascomycota occur in lichen symbiotic association?
A. 40%
B. 30%
C. 50%
D. 60%
An association in which fungal hyphae penetrate the outer cells of the plant root forming coils swellings and minute branches and also extend out into surrounding soil is called______________?
A. Ectomycorrhizae
B. Endomycorrhizae
C. Mycorrizael association
D. Lichen
Which one of the following is the largest group of fungi?
A. Basidiomycota
B. Ascomycota
C. Zygomycota
D. Deuteromycota
The Kingdom of recyclers is known as kingdom_____________?
A. Bacteria
B. Algae
C. Fungi
D. Embryophata
According to two kingdom classification fungi were placed in kingdom___________?
A. Plantae
B. Protista
C. Animalia
D. Fungi
At which stage in the life cycle of Rhizopus meiosis takes place?
A. Formation of sporangiophore via germination of zygospore.
B. Fusion of two hyphae
C. Formation of spores in sporangia
D. Formation of Zygote by fusion of gametangia.
Ecological role of fungi as decomposers is only paralleled by_____________?
A. Blue green algae
B. Cyanobacteria
C. Bacteria
D. Virus
Which of the following is called black bread mold?
A. Penicillium
B. Pilobolus
C. Neurospora
D. Rhizopus
Coenocytic hyphae are also known as______________?
A. Perforated hyphae
B. Septate
C. Aseptate
D. Uninucleate hyphae
In which of the following example of fungi dikaryotic hyphae exist for long period?
A. Zygomycota
B. Basidiomycota
C. Deuteromycota
D. All of these
Unicellular fungi which is non-hyphal is___________?
A. Penicillium
B. Yeast
C. Mushroom
D. Mold
Parasitic fungi absorb nutrients directly from the living host cytoplasm with the help of special hyphal tips called___________?
A. Constricting ring
B. Mildew
C. Haustoria
D. All of these
By which of the following mechanism unicellular yeast reproduce?
A. Conidiation
B. Sporing
C. Budding
D. Fragmentation
Constricting ring around nematode is formed by_____________?
A. Arthrobotrys
B. Mildews
C. Pleurotus ostreatus
D. All of these
Simple breaking of mycelium resulting in formation of a new mycelium from each broken segments is called__________?
A. Conidiation
B. Sporing
C. Budding
D. Fragmentation
Type of lichen which tightly attaches to rocks is_____________?
A. Fruticose
B. Parmelia
C. Foliose
D. Crustose
Which of the following statement is incorrect about asexual reproduction by spores in fungi?
A. On falling to a suitable place they germinate
B. They are dispersed via wind water and insects
C. Spores are haploid structures
D. These are produced through fruiting bodies like ascocarps and basidiocarps.
Mycorrhizae are found in about__________vascular plants?
A. 98%
B. 95%
C. 90%
D. 96%
Spores in sporangia are produced by process?
A. Both of these
B. Asexual
C. Sexual
D. None of these
Fungi can tolerate pH from____________?
A. 2-6
B. 3-7
C. 2-9
D. 3-6
Which of the following is responsible for Irish potato famine?
A. Kelps
B. Dinoflagellates
C. Physarum polycephalum
D. Phytophthora infestans
Which of the following statement about Kingdom Protista is incorrect_______________?
A. They contain ancestors for fungi plants & animals
B. They only include unicellular aquatic eukaryotic organisms
C. They do not develop from Blastula or embryo
D. Their members have characteristics which separate them from other kingdoms
Spores produced by slime molds are__________?
A. Haploid
B. Triploid
C. Diploid
D. None of these
Who first separated bacteria from other protists as a group_____________?
A. John Hogg
B. Margulis and Schwartz
C. Ernst Haeckel
D. Herbert Copeland
In slime molds spores develop into__________?
A. Biflagellated cells
B. Swarm cells
C. Amoeboid reproductive cells
D. All of these
Which of the protozoa has a striking resemblance to collar cells in sponges_____________?
A. Trypanosomoa
B. Choanflagellates
C. Zooflagellates
D. Trichonymphas
Of the following which one is not the characteristic of green algae?
A. Some green algae possess cell wall with cellulose
B. Chlorella is unicellular non-motile green algae
C. They are generally accepted as the ancestors of green plants
D. None of these
Radiolarians belong to which of the following protozoal group____________?
A. Foraminifera
B. Actinopods
C. Zooflagellates
D. Apicomplexans
In chlorophytes the main energy stores are__________?
A. Glycogen
B. Starch
C. Cellulose
D. All of these
Which of the following statement about eiliates in incorrect_____________?
A. They are even capable of sexual reproduction.
B. Their contractile vacoule is respobsible for water regulation.
C. Contain mainly unicellular organisms.
D. Diploid nucleus being smaller is responsible for cells metabolism and growth while polyploidy nucleus functions in sexual process.
Examples of Rhodophytes are___________?
A. Polysiphonia
B. Chondrus
C. Both of these
D. Pinnularia
Of the following which one is not the characteristic of dinoflagellates?
A. They have blooms
B. Most of them are unicellular
C. Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
D. None of these
Lime stone deposits are formed from__________?
A. Actinopods
B. Foraminferans
C. Zooflagellates
D. Apicomplexans
The most important group of producers in marine ecosystem is of__________?
A. Diatoms
B. Dinoflagellates
C. Euglenoids
D. Brown algae
Plasmodium belongs to__________?
A. Actinopods
B. Apicomplexans
C. Ciliates
D. Foraminferans
Most dinoflagellates are___________?
A. Unicellular
B. Zooflagellates
C. Both of these
D. Multicellular
Kingdom protista includes_____________phyla?
A. 27
B. 26
C. 28
D. 29
All phostosynthetic euglenoids lose their chlorophyll when grown in dark and obtain their nutrients heterotrophically this statement is___________?
A. Unpredictable
B. False
C. May be true may be false
D. True
Stentor is a/an____________?
A. Ciliate
B. Actinopods
C. Foraniniferan
D. Apicomplexan
Based on molecular data euglenoids are thought to be closely related to___________?
A. Protozoans
B. Zooflagellates
C. Dinoflagellates
D. Algae
Complex specialized flagellates living symbiotically in the gut of termites are___________?
A. Trichonymphas
B. Euglena
C. Trypanosoma
D. Radiolarians
Golden algae are also known as___________?
A. Chrysophyta
B. Pyrrophyta
C. Phaeophyta
D. Rhodophyta
The drfinite shape to ciliates is given by____________?
A. Pellicle
B. Calcium
C. Penicle
D. Cell wall
Brown algae are also known as___________?
A. Phaeophyta
B. Pyrrophyta
C. Rhodophyta
D. Chrysophyta
Chalk is gradually formed of dead______________?
A. Apicomplexans
B. Foraminiferans
C. Actinopods
D. Radiolarians
The only group of algae having no flagellated motile cells at any stage is___________?
A. Phaeophyta
B. Chrysophyta
C. Pyrrophyta
D. Rhodophyta
Of the following which one has glassy shells________________?
A. Forams
B. Radiolarians
C. Both of these
D. None of these
Most of the photosynthesis on earth is carried by__________?
A. Gymnosperms
B. Kelps
C. Angiosperms
D. Algae
Which of the following statement is incorrect about algae______________?
A. Their zygote unlike plants is protected by parental tissue
B. Almost all of them are aquatic
C. Most of them have different morphological forms in-different stages of their life cycle
D. Their classification is based on pigment composition
In which of the following pigments major energy reserves and cell wall are like plants?
A. Phaeophyta
B. Chlorophyta
C. Rhodophyta
D. Chrysophyta
The word Archaeobacteria (a division of bacteria) derived from Greek means___________?
A. False bacteria
B. True bacteria
C. Recent bacteria
D. Ancient bacteria
Who coined the term Animalcules for microorganisms like Bacteria and protozoa______________?
A. Louis Pasteur
B. Robert Koch
C. Alexander Fleming
D. Leeuwenhoek
Who discovered the bacteria causing tuberculosis and also developed various techniques of media preparation and maintenance of pure culture_____________?
A. Louis Pasteur
B. Robert Koch
C. Alexander Fleming
D. Leeuwenhoek