The gross calorific value for carbohydrates is:
1. 4.0 kcal/g
2. 4.1 kcal/g
3. 5.65 kcal/g
4. 9.45 kcal/g
The total number of phalanges in the human body are:
1. | 14 | 2. | 28 |
3. | 56 | 4. | 7 |
In hemodialysis, the role of artificial kidney is actually played by:
1. | Dialysate | 2. | Blood pump |
3. | Water system | 4. | Cellulose membrane |
Which of the given three layers in the respiratory membrane is/are one-celled thick?
I. Alveolar epithelium
II. Basement substance
III. Vascular endothelium
1. | Only I | 2. | Only I and II |
3. | Only I and III | 4. | I, II and III |
The nodal musculature of the heart has the capability to generate impulse:
1. | on stimulation by the sympathetic division of the autonomic nervous system |
2. | on stimulation by the parasympathetic division of the autonomic nervous system |
3. | on stimulation by the somatic neural division of the peripheral nervous system |
4. | without any external stimulus |
What would be true for the cells shown in the given diagram?
1. A is involved in gestation and B in olfaction 2. A is a part of sympathetic and B of parasympathetic division of ANS 3. A secretes myelin sheath around axons in CNS while B does it in PNS 4. A is responsible for scotopic vision and B is responsible for photopic vision |
Consider the two statements:
I: | Electric synapses are rare in our system. |
II: | Impulse transmission across electric synapse is always faster than across a chemical synapse. |
1. Both I and II are correct and II explains I
2. Both I and II are correct and II does not explain I
3. Only I is correct
4. Only II is correct
After implantation, finger like projections appear on the trophoblast cells called:
1. | Chorionic villi | 2. | Allantois |
3. | Decidua | 4. | Sinusoids |
Which of the following STIs is not caused by a virus?
1. | Genital herpes | 2. | Genital warts |
3. | HIV | 4. | Syphilis |
The peak levels of LH and FSH are observed on day _____ of a typical menstrual cycle.
1. | 6 | 2. | 14 |
3. | 22 | 4. | 28 |
All the following are common second messengers involved in hormonal actions except:
1. Cyclic adenosine monophosphate
2. Inositol phosphate
3. Prostaglandins
4. Calcium
The concentrations of ions is significantly higher in the vacuoles than in the cytoplasm. The reason for this is:
1. Facilitated diffusion of the ions by the tonoplast
2. Active transport of the ions by the tonoplast
3. Presence of porins for diffusion of the ions
4. Bulk transport across the tonoplast
During diakinesis of prophase I:
I. Terminalisation of chiasmata takes place.
II. Meiotic spindle is assembled.
III. Nucleolus disappears and the nuclear membrane breaks down.
The correct statements are:
1. | I, II and III | 2. | I and II only |
3. | I and III only | 4. | II and III only |
The inhibition of succinic dehydrogenase by malonate is an example of:
1. Non-competitive reversible inhibition
2. Non-competitive irreversible inhibition
3. Competitive inhibition
4. Allosteric inhibition
What is incorrect regarding organic farming?
1. | It relies on controlling pests by natural predation rather than introduced chemicals. |
2. | A key belief of the organic farmer is that biodiversity furthers health. |
3. | Pests are totally eradicated. |
4. | Reduces dependence on toxic chemicals and pesticides. |
The construction of first rDNA emerged from the possibility of linking a gene encoding antibiotic resistance with a native plasmid of:
1. | Salmonella typhimurium | 2. | Escherechia coli |
3. | Agrobacterium tumefaciens | 4. | Haemophilus influenzae |
What causes the ‘struggle for existence?
1. | overproduction and imbalance with available resources |
2. | innate competitive tendencies |
3. | the decrease in the environmental carrying capacity |
4. | territories and dominance hierarchies |
In Darwinian terms “fitness” can best be described as:
1. ability of organism, relative to others in the population, to pass its genes to next generation
2. the number of mates the organism has during its life time
3. its lifespan
4. its physical vigor
If Meselson and Stahl's experiment is continued for four generations in bacteria, the ratio of N15/N15: N15/N14: N14/N14 containing DNA in the fourth generation would be:
1. | 1:1:0 | 2. | 1:4:0 |
3. | 0:1:3 | 4. | 0:1:7 |
Match each item in Column I with one in Column II and select the answer from the codes given below:
COLUMN I |
COULMN II |
||
A |
Bioprospecting |
a |
the process of discovery and commercialization of new products based on biological resources |
B |
Biopiracy |
b |
the exploitative patenting of already widely used natural resources, such as plant varieties, by commercial entities |
C |
Bioremediation |
c |
a process that uses microorganisms or their enzymes to treat polluted sites for regaining their original condition |
D |
Biofortification |
d |
the process by which the nutritional quality of food crops is improved through agronomic practices, conventional plant breeding, or modern biotechnology |
Codes
Options: | A | B | C | D |
1. | a | b | c | d |
2. | a | b | d | c |
3. | b | a | c | d |
4. | b | a | d | c |
What is the number of linkage groups in humans?
1. 22
2. 23
3. 24
4. 46
The main reason for the success of the green revolution was:
1. Improvement in the efficiency of chemical pesticides
2. Improvement in irrigation facilities
3. Equitable distribution of land among farmers
4. Development of HYV varieties
The body of the ovule fuses with the funicle in the region called:
1. | Chalaza |
2. | Micropyle |
3. | Hilum |
4. | Nucellus |
The germ pore in the pollen wall:
1. | is an aperture in the pollen intine that allows the pollen tube to exit. |
2. | is the name of the nucleus of the microspore mother cell. |
3. | is formed where sporopollenin is located in the exine. |
4. | is an aperture in the pollen exine that allows the pollen tube to exit. |
A tumor that invades surrounding tissues is usually capable of producing metastases, may recur after attempted removal, and is likely to cause death unless adequately treated. Such a tumor is called a:
1. | Benign tumor | 2. | Malignant tumor |
3. | Teratoma | 4. | Secondary tumor |
In RNA splicing:
1. | Exons are removed and introns are joined together |
2. | Introns are removed and exons are joined together |
3. | Cistrons are removed and introns are joined together |
4. | Introns are removed and Cistrons are joined together |
Which of the following is not an X – linked recessive disorder in humans?
1. Red-green colour blindness
2. Haemophilia
3. Duchenne muscular dystrophy
4. Vitamin D-resistant rickets
Mammals living in a colder environment have:
1. Small body size
2. Low metabolic rate
3. Small appendage size
4. Less body fat
The giant redwood tree, Sequoia, belongs to:
1. | Bryophyta | 2. | Pteridophyta |
3. | Gymnospermae | 4. | Angiospermae |
Consider the following regarding the reasons for the fact that now Cyanobacteria are kept in Monera and not in Plantae:
I. They are prokaryotes.
II. The cell wall of cyanobacteria has peptidoglycan.
III. They can fix atmospheric nitrogen.
The correct explanations would be:
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
The genital pouch in female cockroach is formed by:
1. 7th, 8th and 9th tergites
2. 7th, 8th and 9th sternites
3. 8th, 9th and 10th tergites
4. 8th, 9th and 10th sternites
Cyclostomes:
1. are fresh water organisms that move to marine water for spawning
2. have an open circulatory system
3. have a sucking and circular mouth without jaws
4. do not have either scales on body or paired fins
In which of the following pairs of parts of a flowering plant is epidermis absent?
1. | Root tip and shoot tip | 2. | Shoot bud and floral bud |
3. | Ovule and seed | 4. | Petiole and pedicel |
Roots developed from parts of the plant other than radicle are called
1. Taproots
2. Fibrous roots
3. Adventitious roots
4. Nodular roots
Epigynous flower is seen in:
1. | China rose | 2. | Brinjal |
3. | Mustard | 4. | Ray florets of sunflower |
Identify the chordates in which the notochord persists in the adults?
1. | Tunicates | 2. | Lancelets |
3. | Cyclostomata | 4. | Bony fishes |
Which of the following would necessarily decrease the density of a population in a given habitat?
1. | Natality> mortality | 2. | Immigration >emigration |
3. | Mortality and emigration | 4. | Natality and immigration |
It is necessary to remove sulphur from petroleum products to
1. | reduce the emission of sulphur dioxide in exhaust fumes |
2. | increase efficiency of automobiles' engines |
3. | use sulphur removed from petroleum for commercial purposes |
4. | increase the life span of engine silencers |
Brown air consists of:
1. | Sulphur dioxide | 2. | Nitrogen oxides |
3. | Carbon dioxide | 4. | Ozone |
Among the ecosystem mentioned below, where can one find maximum biodiversity?
1. | Mangroves | 2. | Desert |
3. | Coral reefs | 4. | Alpine meadows |
Among the following bio-geo-chemical cycles, which one does not have losses due to respiration?
1. Phosphorus
2. Nitrogen
3. Sulphur
4. All of the above
Each trophic level has a certain mass of living material at a particular time, best called as:
1. | Biomass | 2. | Standing state |
3. | Standing crop | 4. | Gross productivity |
The given age pyramid represents a:
1. | Fast expanding population | 2. | Slowly expanding population |
3. | Stable population | 4. | Declining population |
If fatty acids were to enter the respiratory pathway, they must be converted to a molecule with:
1. | Two carbons | 2. | Three carbons |
3. | Five carbons | 4. | Six carbons |
Photorespiration is a wasteful process. Why is it so?
1. The number of ATP molecules produced in the pathway is very low.
2. The number of NADPH molecules produced in the pathway is very low.
3. The synthesis of sugars in the pathway requires a large input of ATP energy.
4. There is neither synthesis of sugars, nor of ATP in the pathway.
Which one of the following will not directly affect transpiration?
1. Temperature | 2. Light |
3. Wind speed | 4. Chlorophyll content of leaves |
Calcium is important in skeletal muscle contraction because it
1. Detaches the myosin head from the actin filament
2. Activates the myosin ATPase by binding on it
3. Binds to troponin to remove the masking of active sites on actin for myosin
4. Prevents the formation of bonds between the myosin cross bridges and the actin filament
Nissl bodies are mainly composed of
1. Nucleic acids and SER
2. DNA and RNA
3. Proteins and lipids
4. Free ribosomes and RER
Capacitation refers to change in the
1. Sperm before fertilisation
2. Ovum before fertilisation
3. Ovum after fertilisation
4. Sperm after fertilisation
Which one of the following techniques made it possible to genetically engineer living organisms?
1. Recombinant DNA techniques
2. X-ray diffraction
3. Heavier isotope labeling
4. Hybridization
What is not for genetic code
1. It is unambiguous
2. A codon in mRNA is read in a non-contiguous fashion
3. It is nearly universal
4. It is degenerate
Match Column-I with Column-II and select the correct option using the codes given bel
Column-I Column-II
a. Pistils fused together (i) Gametogenesis
b. Formation of gametes (ii) Pistillate
c. Hyphae of higher Ascomycetes (iii) Syncarpous
d. Unisexual female flower (iv) Dikaryotic
Codes:
a b c d
1. (iii) (i) (iv) (ii)
2. (iv) (iii) (i) (ii)
3. (ii) (i) (iv) (iii)
4. (i) (ii) (iv) (iii)
Plants with ovaries having only one or a few ovules, are generally pollinated by:
1. Bees
2. Butterflies
3. Birds
4. Wind
Main objective of production / use of herbicide resistant GM crops is to
1. Encourage eco-friendly herbicides
2. Reduce herbicide accumulation in food articles for health safety
3. Eliminate weeds from the fields without the use of manual labour
4. Eliminate weeds from the fields without the use of herbicides
A person Iikey to develop tetanus is immunized administering
1. Dead germs
2. Preformed antibodies
3. Wide spectrum antibiotics
4. weakened germs
A cell at the telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at the telophase stage. There is no formation of the cell plate and thus the cell is containing more chromosomes as compared to other dividing cells. This would result in:
1. | Polyteny | 2. | Aneuploidy |
3. | Polyploidy | 4. | Somaclonal variation |
Why is vivipary an undesirable character for annual crop plants
1. It reduces the vigor of the plant.
2. The seeds exhibit long dormancy.
3. It adversely affects the fertility of the plant.
4. The seeds cannot be stored under normal conditions for next season.
Which of the following proved effective for biological control of nematodal disease in plants?
1. Paecilomyces lilacinus
2. Pisolithus tinctorius
3. Pseudomonas cepacia
4. Gliocladium virens
Which one of the following is wrong about Chara?
1. | Globule and nucule present on the same plant |
2. | Upper antheridium and lower oogonium |
3. | Globule is a male reproductive structure |
4. | Upper oogonium and lower round antheridium |
Which one of the following statements is wrong?
1. Laminaria and Sargassum are used as food.
2. Algae increase the level of dissolved oxygen in the immediate environment.
3. Algin is obtained from red algae, and carrageenan from brown algae.
4. Agar-agar is obtained from Gelidium and Gracilaria.
Select the wrong statement.
1. Mycoplasma is a wall-less microorganism
2. Bacterial cell wall is made up of peptidoglycan
3. Pili and fimbriae are mainly involved in motility of bacterial cells
4. Cyanobacteria lack flagellated cells
Select the mismatch.
1. Methanogens-Prokaryotes
2. Gas vacuoles-Green bacteria
3. Large central vacuoles-Animal cells
4. Protists-Eukaryotes
Keel is characteristic of the flowers of
1. Cassia
2. Calotropis
3. Bean
4. Gulmohur
In which one of the following, the genus name, its two characters and its, class/phylum are correctly matched?
Genus name | Two characters | Class/phylum | ||
1. | Ascaris | (a) (b) |
Body segmented Males and females distinct |
Annelida |
2. | Salamandra | (a) (b) |
A tympanum represents ear Fertilization is external |
Amphibia |
3. | Pteropus | (a) (b) |
Skin possesses hair Oviparous |
Mammalia |
4. | Aurelia | (a) (b) |
Cnidoblasts Organ level of organization |
Coelenterata |
Nitrogen oxides formed during emission from automobiles and power plants are a source of fine airparticles which lead to
1. Dry acid deposition
2. Photochemical smog
3. Wet acid deposition
4. Industrial smog
Which one of the following is not used for disinfection of drinking water?
1. Chlorine
2. Ozone
3. Chloramine
4. Phenyl
Which one is endangered medicinal plant
1. Ocimum
2. Nepenthes
3. Podophyllum
4. Garlic
The biomass available for consumption by the herbivores and the decomposers is called
1. Secondary productivity
2. Standing crop
3. Gross primary productivity
4. Net primary productivity
The dough kept overnight in warm weather becomes soft and spongy because of
1. Fermentation
2. Cohesion
3. Osmosis
4. Absorption of carbon dioxide from the atmosphere
The most abundant intracellular cation is:
1.
2.
3.
4.
In human females, meiosis-II is not completed until
1. puberty
2. fertilization
3. uterine implantation
4. birth
Low Ca2+ in the body fluid may be the cause of
1. | tetany | 2. | anaemia |
3. | angina pectoris | 4. | gout |
Variations caused by mutation, as proposed by Hugo de Vries, are:
1. small and directionless
2. random and directional
3. random and directionless
4. small and directional
Which of the following statements is not correct?
1. Lysosomes are formed by the process of packaging in the endoplasmic reticulum.
2. Lysosomes have numerous hydrolytic enzymes.
3. The hydrolytic enzymes of lysosomes are active under acidic pH.
4. Lysosomes are membrane bound structure.
In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in generation, pink flowers were obtained. When pink flowers were selfed, the generation showed white, red and pink flowers. Choose the incorrect statement from the following:
1. Law of Segregation does not apply in this experiment
2. This experiment does not follow the Principle of Dominance
3. Pink colour in is due to incomplete dominance
4. Ratio of is 1/4(red):2/4(pink):1/4(white)
In Which of the following techniques, the embryos are transferred to assist those females who cannot conceive?
1. GIFT and ZIFT
2. ICSI and ZIFT
3. GIFT and ICSI
4. ZIFT and IUT
The transverse section of a plant shows following anatomical features :
(a) Large number of scattered vascular bundles surrounded by bundle sheath.
(b) Large conspicuous parenchymatous ground tissue.
(c) Vascular bundles conjoint and closed.
(d) Phloem parenchyma absent.
ldentify the category of plant and its part :
1. Monocotyledonous root
2. Dicotyledonous stem
3. Dicotyledonous root
4. Monocotyledonous stem
Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their:
1. Growth response
2. Defence action
3. Effect on reproduction
4. Nutritive value
Goblet cells of alimentary canal are modified from:
1. Columnar epithelial cells
2. Chondrocytes
3. Compound epithelial cells
4. Squamous epithelial cells
Select the correct statement.
1. Glucagon is associated with hypoglycemia.
2. Insulin acts on pancreatic cells and adipocytes.
3. Insulin is associated with hyperglycemia.
4. Glucocorticoids stimulate gluconeogenesis.
Identify the substances having a glycosidic bond and peptide bond, respectively in their structure:
1. | Glycerol, trypsin | 2. | Cellulose, lecithin |
3. | Inulin, insulin | 4. | Chitin, cholesterol |
Match the following with respect to meiosis:
(a) | Zygotene | (i) | Terminalization |
(b) | Pachytene | (ii) | Chiasmata |
(c) | Diplotene | (iii) | Crossing over |
(d) | Diakinesis | (iv) | Synapsis |
Select the correct option from the following:
(a) | (b) | (c) | (d) | |
1. | (iv) | (iii) | (ii) | (i) |
2. | (i) | (ii) | (iv) | (iii) |
3. | (ii) | (iv) | (iii) | (i) |
4. | (iii) | (iv) | (i) | (ii) |
Name the enzyme that facilitates opening of DNA helix during transcription.
1. DNA helicase
2. DNA polymerase
3. RNA polymerase
4. DNA ligase
The intrinsic factor that helps in the absorption of vitamin is secreted by-
1. Goblet cells
2. Hepatic cells
3. Oxyntic cells
4. Chief cells
The Total Lung Capacity (TLC) is the total volume of air accommodated in the lungs at the end of forced inspiration. This includes :
(1) RV; IC (Inspiratory Capacity); EC (Expiratory Capacity); and ERV
(2) RV; ERV; IC and EC
(3) RV; ERV; VC (Vital Capacity) and FRC (Functional Residual Capacity)
(4) RV (Residual Volume); ERV (Expiratory Reserve Volume); TV (Tidal Volume); and IRV (Inspiratory Reserve Volume)
Who coined the term 'Kinetin'?
1. | Skoog and Miller | 2. | Darwin |
3. | Went | 4. | Kurosawa |
The increase in osmolarity from outer to inner medullary interstitium is maintained due to:
(i) Close proximity between Henle's loop and vasa recta
(ii) Counter current mechanism
(iii) Selective secretion of HCO3- and hydrogen ions in PCT
(iv) Higher blood pressure in glomerular capillaries
1. | Only(ii) | 2. | (iii) and (iv) |
3. | (i), (ii) and (iii) | 4. | (i) and (ii) |
Select the incorrect statement.
1. Transport of molecules in phloem can be bidirectional.
2. The movement of minerals in the xylem is unidirectional.
3. Unloading of sucrose at the sink does not involve the utilization of ATP.
4. Elements most easily mobilized in plants from one region to another are phosphorus, sulfur, nitrogen, and potassium.
During non-cyclic photophosphorylation, when electrons are lost from the reaction center at PS II, what is the source which replaces these electrons?
1. | Oxygen | 2. | Water |
3. | Carbon dioxide | 4. | Light |
Which of the following is associated with a decrease in cardiac output?
1. Sympathetic nerves
2. Parasympathetic neural signals
3. Pneumotaxic center
4. Adrenal medullary hormones