Biology Short Questions Guess Paper FSC 12th Class 2017

Biology Short Questions Guess Paper FSC 12th Class 2017

Note: (2nd Year Biology Guess Paper 2017) All published material contains an informatory data which is only gathered for educational purpose. These guesses are prepared after detailed analysis of past five years exams. Our entire team and/or publishers are not responsible in case of variation in assumed results and outcomes. However the purposes of attempted efforts are to provide accurate and effective knowledge to the readers, in any case our entire team and/or publishers will not be responsible for the accuracy or misusage of all published material.

موسٹ امپورٹنٹ سوالات کے لیا سائٹ پیپر سے کچھ دن پھیلے بی چیک کریں: شکریہ

یہ پیپر اولڈ اور نیو کورس کا تجزیہ کر کے تیار کیا گیا ہے (٢٠١٢ سے ٢٠١۶ اولڈ پپیرس ). اپپنے سلیبس کے مطابق تیاری کریں شکریہ.

Frequently Asked Questions 2012 – 2016

Biology Short Questions Variations

What is osteoporosis?

What is pyrexia?

What is somatic nervous system?

What is the concept of differentiation?

What is the major problem for terrestrial life?

What is the role of cerebellum?

What is the role of stem between root and aerial parts of the plant? OR Whether the secondary xylem causes the increase in stem thickness?

What is the role of vascular cambium?

When transcription is initiated?

Who first proposed the objective definition of instincts in terms of animal behavior?

Write down the side effects of diabetes.

Was pea a lucky choice for Mendel?

Differentiate between xt-linked trait and y-linked trait.

What are polygenic traits? OR What type of traits can assort independently?

What is a universal blood donor?

State Harcty Weinberg theorem.

What are the biogeoehemieal cycles?

Define grazing.

Define syneceology.

Is interphase a resting phase? Why?

Define chromosomal non-disjtinction.

What is anticodon?

Differentiate between Osmoconformer and osnia-regulators.

What is the cause of cramps?

What is a ligament?

What is nutation?

What is the cause of tetanus?

Define circadian rhythm.

What is the difference between CNS and PNS?

What are the functions of parathyroid gland?

What are the commercial applications of auxins?

List different types of tropism.

What is Alzheinief’s disease?

Define the law of independent assortment.

What are biochemical cycles?

What is vernalisation?

Why Galapagos island are famous?

Explain the functions of two hormones secreted by Islets of Langerhans. OR How is birth controlled by maternal and foetal hormones in human female?

What is habituation? Give an example. OR What do you know about habituation?

Differentiate betweep homology and analogy.

Define food chain and food web. OR Differentiate between food chain and food web. OR Describe food web and give its significance.

Explain ecological Niche.

What is Parthenocarpy and example?

What is structure and function of corpus luteum? OR What is corpus luteum? Give its function. OR What are meissner’s corpuscles?

What is gastrocoele and from which germ layer it is originated?

How do final size of cells of cortex and tracheids is attained intone of maturation.

Give the names of the two sheet like layers into which mesoderm splits and name the cavity formed between these.

What is Alkaptonuria and its cause?

What are linkage groups and give their number in human beings? OR Differentiate between linkage and linkage group.

What are compound sex chromosomes and their example? OR Assign the sex of the human having XO, XXX, XXY and XYY chromosomes. OR What are sex limited traits?

Mention the role of Lambda phage during recombinant DNA technology. OR What are important features of DNA polymerase? OR What is recombinant DNA? OR Give two uses of DNA finger printing.

What is Biodegradable Plastic and its origin?

Differentiate between ectotherms and endotherms.

What are poikilotherms? Give one example.

What are pyrogens?

What are nyetinastic movements? OR Explain two types of Nastic movement.

Characterize collenchyma cells. OR Differentiate sclerechyma from collenchyma cells.

What are the causes of herniation of discuss?

Give the role and kinds of tRNA. OR Name types of RNA. OR hat is the function of RNA polymerase in transcription? OR What are the three major claSses of RNA?

What is layering. Give one example. OR Give the layering characteristics of grassland.

Mention the characteristics of plant life in desert ecosystem. OR What type of animal and plant life is present in a desert ecosystem? Also give examples. OR Where is desert ecosystem located in Pakistan? OR What type of plant life is present in desert ecosystem?

What are solid waste and how these can be used as source of energy?

What do you mean by population explosion and give its two causes. OR Define population pressure. Give one example of its effect on ecosystem. OR Compare population with community.

What is mitotic apparatus? Give its function.

Give events of Zygotene.

Give two main importance of meiosis.

What is test cross? Give its uses. OR What is test cross? Why did Mendel devise this cross? OR What is a test cross? Give ito significance.

Define crossing over and its importance?

What are palindromic sequences?

Define genome and genomic library. OR What is genomic library? How can we make a genomic library? OR What are the primary goals of human genome project? OR Differentiate between genome and probe.

What are the uses of PCR amplification and analysis?

What is uremia?

Define homeostasis. Give its importance. OR Give any functions of liver in relation to homeostasis.

What happens during metaphase I? OR What happens during metaphase?

What is pleiotropy and its example? OR Differentiate between epistasis and pleiotropy.

Define homeotberms.

What is lithotripsy? OR What is extracorporeal shock wave lithotripsy?

Differentiate between primary and secondary growth in plants. OR Differentiate between short day plants and long day plants. OR Explain eytokinesis in plants. OR What percentage of sun energy reaches to plants? OR Which type of plants are said to etiolate? OR What are transgenic plants? OR How growth occurs in vascular plants?

How prietary tissue is added in primary growth? OR How water enters the vacuole ad hence provides mechanical support, turgidity to soft tissues of plant? OR Differentiate between tissue culture and cloning.

Define embryonic induction. OR Define primary organizer and primary induction. OR Give an account of embryonic induction.

What is genetic drift? OR Define genetic engineering. OR What is genetic code? Quote one example.

Define geotropism.

What are calluses?

Define Nissps Granules

Describe main points of darwin’s theory. OR Define the theory of natural selection. OR State theory of special creation.

What is genital herpes?

Define regeneration with examples.

Differentiate between growth and development. OR Explain embryonic development.

Define Teratology. What are teratogens?

What is heterochromatin and euchromatin? OR Compare euchromatin with heterochromatin.

What are Okazaki fragments? Also give their length.

What is limnetic zone? Mention its life. OR Differentiate between limnetic zone and profundal zone.

What do you know about ozone layer?

Give at least four ways to conserve energy.

Give two importances of mitosis.

Define product rule.

In birds the female is beterogametic. How?

What is multifactorial inheritanee? OR How blood pressure is a multifactorial trait?

Write at least three characters of cancer cells. OR How can you identify the cancer cells? OR What are the properties of cancer cells? Differentiate between benign and malignant tumors?

What is aspartame?

Compare osmoconformers and osmoregulators.

What are flame cells, give their role? OR What are flame cells and why are these called so?

How callus is formed?

What is a synovial joint?

How is muscle fatigue produced? OR What are sources of energy for muscle contraction? OR What is the difference between tetanus and muscle tetany?

Differentiate between necrosis and apoptosis.

Describe membrane invagination hypothesis of eukaryotic cell evolution.

What is modern synthesis?

Differentiate between biorhythms and diurnal rhythms.

Give role of 2, 4 dichlorophenoxy acetic acid.

Write functions of photoreceptors and nociceptors.

Explain oestrous cycle.

What is meant by lactation, how it is controlled?

What is probe? Give its use.

Write four ways for energy conservation.

What are point mutations? Give examples.

What is translation? OR Differentiate between translation and transcription.

Define karyotype.

Compare monohybrids with dihybrids.

Differentiate between homozygous and heterozygous.

Define biosphere. OR Differentiate between biomes and biosphere.

What are producers and consumers? OR Write about decomposers. OR Differentiate between consumers and decomposers.

What are hydrophytes? What are their important adaptations?

Define anhydrobiosis with an example.

Name the types of cells associated with bones. OR How many steps are involved in repairing of broken bones? Also name them. OR Name unpaired bones of cranium.

What are the important signs of old age in human beings?

How do karyokinesis and cytokinesis phases of cell division differ? OR Differentiate between karyokinesis and cytokinesis. OR How cytokinesis occurs in animals and plants.

Explain a tumor.

What is turner’s syndrome? OR Explain testicular feminization syndromes.

Define fossils. Where are most of the fossils found?

What are vestigial organs? Name some important vestigial organs of man. OR Name some important vestigial organs of man.

What is climate? OR DiffeTentiate between climate and weather.

What are alpines? OR What are called boreal? OR Differentiate between alpine and boreal coniferous forests.

What is deforestation? OR Differentiate between deforestation and afforestation.

What is reflex arc?

What is commercial application of Gibberellins? OR Give two commercial applications of Gibberellins.

How Axons differ from Dendron? OR What are axons and dendrites? OR Compare Dendrites with Axons.

What are test tube babies?

What is Apomixes?

What is seed dormancy? Give its importance. OR What is the importance of seed in the life cycle of a plant?

What is totipotent?

What is genetiZ code?

Differentiate between phenotype and genptype.

Define True Breedings.

Compare allele with multiple alleles. OR What are multiple alleles? Give one example. OR Differentiate between Allele and Mutliple Alleles.

What is succession?

Differentiate between shivering thermogenesis and non-shivering thermogenesis.

Sketch urea cycle. OR Sketch Metabolic pathway of urea cycle. OR Write structural formulae of urea and uric acid. OR What is body’s central metabolic clearing house?

Differentiate between ureter and urethra.

Differentiate between epinasty and hyponasty.

What is cleft palate?

What is non-disjunction? Give its effects.

What changes occur in dividing cell during Deplotene?

Explain homologous and analogous organs. OR Differentiate between homologous and analogous organs.

Name any five species declared extinct in Pakistan.

Define effectors. Give their examples.

What is Apornixes?

Define Bioreactors.

What do you mean by Lirnnetic Zone?

Define desertification.

Define demography.

Differentiate between purines and pyrimidienes.

What is predation? Give its significance.

Define enclotherms and heterotherms.

What is haemodialysis? Give its importance.

What is foramen trioseum? How it is formed?

Define Phototactic movements with example.

Give composition of exoskeleton in molluscs and arthropods.

Differentiate between neurula and neurocoel.

Differentiate between natural selection and artificial selection. OR How artificial selection is different from natural selection?

Define Neo Darwinism.

Differentiate between nerves and ganglia.

Define the term hormone. OR What is the role of anti diuretic hormone?

What is haploid parthenogenesis? OR What is diploid parthenogenesis? OR Define parthenogenesis and its various types.

What is average rainfall in temperate deciduous forests? OR Why are forests called environmental buffers? OR Discuss animal’s life of temperate deciduous forests.

Sketch a phosphodiester bond.

Define central dogma.

What is MODY?

Define nitrogen fixation. OR Sketch three main steps in nitrogen cycle.

Give four adaptations of xerophytes. OR Give adaptations for terrestrial ecosystem. OR What are the major adaptations of terrestrial ecosystem?

Differentiate between fibers and sclereides.

Define chemotactic movement. Write its cause.

Define apical and intercalary meristems.

What is blastoderm? Name its layers.

Describe cell cycle. Give its two phases. OR Define Cell cycle. Highlight its importance and significance. OR Define cell cycle. Draw a eukaryotic cell cycle.

What is saltatory impulse? OR Defme nerve impulse.

What is action of nicotine on coordination?

What is cretinism?

Describe gonorrhea.

What are fraternal twins?

What is meant by cloning? OR What are advantages of cloning?

What is Taq Polymerase? OR What is the polymerase chain reaction?

What is profundal zone? OR Give characteristics of profundal zone.

Give the sources and harmful effects chloroflorocarbons (CFCs).

What is eutrophication?

What is semi-conservative replication?

What is law of segregation?

Differentiate between hydrosere and xerosere.

What is tetrad?

What are hydrothermal vents?

What is discoidal cleavage?

What is metanephridium?

What is counter-current multiplier?

Differentiate between photonasty and thermonasty.

What is meant by division of labour?

Differentiate between auxons and dendrites.

What are commercial applications of ethene? Quote any two.

What is syphilis?

Define biotechnology. What are transgenic organisms?

What is meant by fossil fuels?

Differentiate between chromosome and nucleosome.

What is incomplete dominance?

What is erythroblastosis foelalis?

Differentiate between ectoparasite and endoparasite.

What Ymbiosis? Give one example.

What are lichens? Give one example. OR What are lichens and mycorrhizae?

Causes delay leaf senescence in a few species. OR What are the causes of rapid movement of leaflets of mimosa plant?

Define counter current mechanism.

Define gastrulation in chick.

Define hybridization. What was its use?

Define meristem, name its types on the basis of position. OR Give example of lateral meristem.

Define notation.

Define tactic movements. OR When tactic movement is negative and positive?

Define the process of ecdysis.

Define yrernalisation.

Describe animal life of grass land ecosystem. OR Define Productivity of an ecosystem. OR What is composition of air of terrestrial ecosystem? OR Give the name of some major ecosystems on land in Pakistan.

Describe different types of regulations of heat exchange between animals and environment. OR What are heat-shock proteins?

Elaborate molecular carriers. Give examples. OR When and who discovered the molecular basis of sickle cell anemia? OR What is the role of molecular career the vector?

Enlist non-sense colons and their function.

Give a detailed account of synapse.

Explain briefly endosymbiont hypothesis.

Explain hematoma formation.

Explain imprinting.

Explain menupause and after birth.

Give an account of phenylketonuria.

What are oviparous? OR Give the differences between oviparous and viviparous animals.

Give functions of cytokinins?

Give functions of giber relins?

How arthritis arises in joints?

What is role of hypothalamus? OR How does hypothalamus regulate homeostatic function by feedback mechanism?

How does locomotion take place in earthworm?

How transgenic animals are developed? OR What are transgenic organisms?

In birds the female is heterogametic. How?

Name the cells associated with bone?

On what the evolutionary change is based mainly?

Secondary function of gonads is to act as an endocrine gland.

Specify the part of nephror associated with each of the following functions: a. Filtration, b. Reabsorption, c. Secretion

State role of grey vegetal and grey equatorial cytoplast

What are characteristics of spongy bone?

What are hinge joints?

What are malpighian tubules?

What are nutrient elements?

What are pacinian corpuscles?

What are polygenetic traits?

What are tendons?

What are the endangered species? What measures could be adopted for their preservation?

What are the restriction enzymes?

What are uses of abscisic acid?

What biodiversity?

What do you mean by the replication process?

What do you understand from “rigor mortis”?

What is a cell suspension culture?

What is anaphase? OR Write booby about anaphase?

What is biome? OR How many biomes are present in the world, name only five of them.

What is blubber-and in which animals is it found?

What is dialyzer?

What is epilepsy?

What is function of medulla?

What is glomerulus?

What is gray crescent?

What is hydroskeleton or hydrostatic skeleton?

What is innate releasing mechanism?

What is mongolism? How is it caused?

What is nitrification?

What are ardrogens?

What is difference between defoiestation and forestation?

What do you know about bio-diversity?

Define pollution. OR What is water pollution?

Define green house effect.

What is algal bloom?

What is soil?

What is inhibitory?

What is joint amoeba?

Characterize collencyma cells.

Compare phytoplankton and zooplankton.

What is mycorrhiza?

Define Niche.

Write names of theories of evolution presented by Lamarch and Darwin.

Why leaves are said to be excretophores?

Explain the process of panting with example.

What is ADH and how does it function?

What is cartilage? List the main types of cartilage. OR Discuss main types of cartilage. OR Differentiate betvVeen hyaline cartilage and fibro cartilage.

Differentiate between passive flight and active flight.

What is rickets? Give its causes. OR What is rickets? Give its treatment.

What are Gastrin and Secretin?

Write symptoms of Alzheimer’s disease. OR What are symptoms of Turner’s syndrome? OR What are the causes and symptoms of the following diseases: a. Sciatica, b. Arthritis OR What are apparent symptoms or effects of browns syndrome? OR Describe causes and symptoms of down’s syndrome. OR Give symptoms of aging. OR Write one cause for each of following diseases: a. Kwashiorkor, b. Alzheimer, c. Hemophilia

What are SRY gene? OR What is gene therapy? OR What is a gene pod? OR What is gene pool? OR What is population’s gene pool? OR Give the names of four factors affecting gene frequency. OR What is role of suicide gene in transgenic bacteria? OR How is gene therapy helpful to cure scid? OR How genes can be isolated from chromosomes? OR How can we get the gene of interest? OR Give three possible ways to get the gene of interest. OR How can you calculate recombination frequency between two linked genes? OR Differentiate between gene and gene pool. OR Differentiate between Sanger’s method and Maxarn Gilbert method of Gene Sequencing.

Define Hardy Weinberg Theorem and give its equation in the form of binomial expansion.

Define autecology. OR Differeiate between Autecology and Synecology.

Define commensalism with the help of an example.

How identical twins and fraternal twins are produced? OR How are identical twins different from fraternal twins? OR How identical twins are produced? DNA?

Name the types of plants according to photoperiodism.

Write down at least two important measures to prevent AIDS.

What is primary organizer and inducer substances?

What is the effect of human impact on Tundra Ecosystem? OR Give location of Tundra. Ecosystem in Pakistan.

Characterize littoral zone of fresh water lakes. OR Name three zones is Lake Ecosystem.

What is Acid Rain? OR Define acid rain and also explain its effects.

What are renewable resources? Give an example. OR Differentiate between renewable and non-renewable resources.

What is metastasis and its importance?

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