What types of digestive hydrolytic enzymes are commonly secreted as zymogens [inactive precursors]?
1. Proteolytic
2. Carbohydrases
3. Lipases
4. Nucleases
The metacarpo-phalangeal joint will be an example of what type of the synovial joint?
1. condyloid
2. gliding
3. saddle
4. hinge
Urine in ureter is drained directly from:
1. | Collecting duct | 2. | Papilla |
3. | Renal pelvis | 4. | Major calyces |
The main respiratory center in humans is located in:
1. Hypothalamus
2. Thalamus
3. Medulla oblongata
4. Pons
The functions of the lymphatic system do not include:
1. The removal of interstitial fluid from tissues
2. Transport of factors needed for coagulation of blood
3. transport of nutrients and hormones
4. Absorption and transport of end products of fat digestion
Above the rows of hair cells of Organ of Corti, there is a thin elastic membrane called:
1. Reissner’s membrane | 2. Basilar membrane |
3. Tectorial membrane | 4. Tympanic membrane |
The change in electrical potential that occurs between the inside and outside of a nerve or muscle fiber when it is stimulated, serving to transmit nerve signals is called as:
1. Action potential | 2. Threshold potential |
3. Reversal potential | 4. Excitatory post synaptic potential |
To induce uterine contractions for parturition, which of the following hormones can be injected into the female?
1. | hCG | 2. | Estrogen |
3. | Progesterone | 4. | Oxytocin |
Consider the given sexually transmitted infections:
Gonorrhea, Syphilis, Genital herpes, Chlamydiasis, Genital warts, Trichomoniasis, Hepatitis – B, HIV
How many of these diseases are caused by bacteria?
1. | 2 | 2. | 3 |
3. | 4 | 4. | 1 |
The cessation of menstrual cycles is called as:
1. | Menarche | 2. | Thelarche |
3. | Pubarche | 4. | Menopause |
Match each item in Column I [Hormone] with one in Column II [Function] and select your answer from the codes given:
Column I |
Column II |
A. ADH |
a. Makes collecting duct permeable to water and urea |
B. PTH |
b. Stimulates osteoclasts |
C. LH |
c. Rupture of Graafian follicle leading to ovulation |
D. ANF |
d. Causes vasodilation |
Codes
A | B | C | D | |
1. | a | b | c | d |
2. | a | b | d | c |
3. | b | a | d | c |
4. | b | a | c | d |
Given below is an electron microscopic structure of:
1. | Cilium | 2. | Flagellum |
3. | Fimbria | 4. | Centriole |
Consider the following events:
I. Centromere split and chromatids separate
II. Chromatids move to opposite poles
The stage of mitosis characterized by these two events is:
1. | Prophase | 2. | Metaphase |
3. | Anaphase | 4. | Telophase |
Given below is the structure of a lipid. The excess of this compound in human blood can lead to:
1. Alzheimer’s disease | 2. Phenylketonuria |
3. Atherosclerosis | 4. Rheumatoid arthritis |
What advantage does the mycobiont get in the mycorrhizal symbiotic relationship?
1. Adequate uptake of water
2. More availability of minerals like phosphorus
3. Availability of carbohydrates for energy
4. Resistance to diseases, drought, and salinity
In agarose gel electrophoresis, the DNA fragments produced by restriction enzyme digestion:
1. | will move towards anode with smaller fragments moving farther than the larger segments |
2. | will move towards anode with larger fragments moving farther than the smaller segments |
3. | will move towards cathode with smaller fragments moving farther than the larger segments |
4. | will move towards cathode with larger fragments moving farther than the smaller segments |
Aquatic mammals do not contain gill slits because:
1. they are fish and not mammals
2. they only float on the water
3. their adaptation to aquatic life is secondary
4. they respire through their moist skins and lungs
In organic evolution what is it that actually evolves?
1. | individual | 2. | family |
3. | population | 4. | species |
You want to transform the cells of sugarcane plants with the objective of introducing a disease-resistant gene in sugarcane plants. The best method to achieve this goal would be:
1. | The use of a gene gun |
2. | Microinjection |
3. | Agrobacterium tumefaciens mediation |
4. | Delivery of DNA by liposomes |
Several South Indian states raise 2-3 crops of rice annually. The agronomic feature that makes this possible is because of
1. shorter rice plant
2. better irrigation facilities
3. early yielding rice variety
4. disease-resistant rice variety
To initiate translation, the mRNA first binds to:
1. The smaller ribosomal sub-unit,
2. The larger ribosomal sub-unit
3. The whole ribosome
4. No such specificity exists.
Which human chromosome has maximum and minimum genes located on it respectively?
1. X and 1
2. X and Y
3. Y and 1
4. 1 and Y
An abnormal human of the karyotype 49, XXXYY will form how many Barr bodies?
1. 1
2. 2
3. 3
4. 4
Pollen tube, after reaching the ovary, enters the ovule through _______ and then enters one of the _____________ through filiform apparatus.
1. | Chalaza; Synergids | 2. | Micropyle; Antipodals |
3. | Micropyle; Synergids | 4. | Chalaza; Antipodals |
The dominating pollinating agent of flowering plants amongst animals are:
1. | Arboreal mammals | 2. | Insects |
3. | Birds | 4. | Reptiles |
The early screening test for HIV infection is :
1. ELISA
2. Western Blot
3. Culture of HIV
4. Detection of opportunistic infections
In humans, the mechanism of sex determination is:
1. | XX – XY; male heterogamety |
2. | XX – XY; female heterogamety |
3. | XX – XO; male heterogamety |
4. | XX – XO; female heterogamety |
The thermostat of human body is located in:
1. Hypothalamus
2. Cerebrum
3. Cerebellum
4. Thalamus
Anisogamous sexual reproduction is seen in:
1. Ulothrix
2. Spirogyra
3. eudorina
4. Fucus
The main criteria for classification used by Whittaker included all the following, except:
1. Cell structure and body organization
2. Mode of nutrition
3. Mode of reproduction
4. Mode of locomotion
All the following are correct regarding mycoplasma except:
1. they lack a cell wall
2. they are obligate aerobes
3. they are smallest living cells known
4. many are pathogenic in plants and animals
Which of the following plant diseases in not caused by a fungus?
1. Late blight of potato
2. Loose smut of wheat
3. Canker in citrus
4. Powdery mildew of grape vine
Which of the following mouth parts of cockroach are paired?
1. Labrum | 2. Labium |
3. Hypopharynx | 4. Maxilla |
Which of the following statements regarding Chondrichthyes may not be true for majority of members of the class?
1. Notochord is persistent throughout life.
2. Skin has placoid scales.
3. Fertilization is internal.
4. Mouth is located ventrally.
When we peel the skin of a potato tuber, we remove
1. Periderm
2. Epidermis
3. Cuticle
4. Sapwood
Which of the following plants is used to extract the blue dye?
1. Trifolium
2. Indigofera
3. Lupin
4. Cassia
Identify the correct statements amongst the following:
I: | When a shoot tip transforms into a flower, it is always solitary |
II: | In racemose inflorescence, the main axis continues to grow and flowers are borne in basipetal order |
III: | In cymose inflorescence, the main axis terminates in a flower and flowers are borne in basipetal order |
1. | Only I | 2. | Only I and II |
3. | Only I and III | 4. | Only II and III |
Identify the incorrect statement regarding Osteichthyes?
1. Gills with operculum
2. Skin covered by placoid scales
3. Presence of swim bladder
4. Mostly oviparous
Which of the following is a partial root parasite?
1. Sandalwood
2. Mistletoe
3. Orobanche
4. Ganoderma
Match the items in column I and column II and choose the correct option:
Column I | Column II | ||
A. | UV | i. | Biomagnifications |
B. | Biodegradable organic matter | ii. | Eutrophication |
C. | DDT | iii. | Snow blindness |
D. | Phosphates | iv. | BOD |
Options: | A | B | C | D |
1. | ii | i | iv | iii |
2. | iii | ii | iv | i |
3. | iii | iv | i | ii |
4. | iii | i | iv | ii |
Catalytic Converters:
I: | use expensive metals like Gold & Tungsten as catalysts |
II: | convert unburnt hydrocarbons to CO2 and H2O, CO to CO2 and NO to N2 |
III: | are deactivated by Lead |
1. only I & II are correct
2. only I & III are correct
3. Only II & III are correct
4. I, II & III are correct
Which of the following is not a consequence of deforestation?
1. | An increase in atmospheric carbon dioxide as trees can hold a lot of carbon in their biomass. |
2. | Loss of biodiversity due to habitat destruction. |
3. | A wetter climate as trees can hold a lot of water. |
4. | Soil erosion due to loss of the protective layer of vegetation. |
The historic convention on Biological Diversity held in Rio de Janeiro in 1992 is known as:
1. | CITES Convention | 2. | The Earth Summit |
3. | G-16 Summit | 4. | MAB Programme |
Edaphic factor refers to :
1. Water
2. Soil
3. Relative humidity
4. Altitude
In an ecological pyramid, the saprotrophs:
1. are primary producers
2. can be at any trophic level
3. are not given any place
4. are kept with apex predators
Which of the following is/are true for the given equation?
Nt = N0 ert
I. | It is the integral form of exponential growth equation |
II. | The rate of natural increase is represented by “r” |
III. | “e” is the base of natural logarithm [2.71828] |
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II and III |
Which of the following exhibits the highest rate of respiration?
1. Growing shoot apex | 2. Germinating seed |
3. Root tip | 4. Leaf bud |
The correct sequence of flow of electrons in the light reaction is
1. | PSII, plastoquinone, cytochromes, PS I, ferredoxin |
2. | PSI, plastoquinone, cytochromes, PS II, ferredoxin |
3. | PSI, ferredoxin, PS II, |
4. | PSI, plastoquinone, cytochromes, PS II, ferredoxin |
Match the following and choose the correct option:
A.Leaves |
i. Anti-transpirant |
B.Seed |
ii.Transpiration |
C.Roots |
iii.Negative osmotic potential |
D. Aspirin |
iv.Imbibition |
E.Plasmolyzed cell |
v.Absorption |
Options:
1. A-iii, B-iv, C-i, D-v, E-ii
2. A-ii, B-iv, C-v, D-i, E-iii
3. A-iii, B-ii, C-iv, D-v, E-i
4. A-iii, B-ii, C-i, D-iv, E-v
The difference between spermiogenesis and spermiation is:
1. | In spermiogenesis, spermatozoa from sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed. |
2. | In spermiogenesis, spermatozoa are formed, while in spermiation spermatids are formed. |
3. | In spermiogenesis, spermatids are formed, while in spermiation spermatozoa are formed. |
4. | In spermiogenesis, spermatozoa are formed, while in spermiation spermatozoa are released from sertoli cells into the cavity of seminiferous tubules. |
Industrial melanism as observed in peppered moths proves that:
1. | Melanism is a pollution-generated feature. |
2. | The true black melanic forms arise from a recurring random mutation. |
3. | The melanic form of the moth has no selective advantage over lighter from the industrial area. |
4. | The lighter form of the moth has no selective advantage either in a polluted industrial area or a non-polluted area. |
Satellite DNA is useful tool in
1. Sex determination
2. Forensic science
3. Genetic engineering
4. Organ transplantation
A dioecious flowering plant prevents both:
1. | Autogamy and xenogamy |
2. | Autogamy and geitonogamy |
3. | Geitonogamy and xenogamy |
4. | Cleistogamy and xenogamy |
Which one of the following statements is correct?
1. Sporogenous tissue is haploid
2. Endothecium produces the microspores
3. Tapetum nourishes the developing pollen
4. Hard outer layer of pollen is called intine
Some of the characteristics of BT cotton are
1. Medium yield, long fibre and resistance to beetle pests
2. High yield and production of toxic protein crystals which kill dipterans pests
3. High yield and resistance to bollworms
4. Long fibre and resistance to aphids
Widal test is used for the diagnosis of
1. Pneumonia
2. Tuberculosis
3. Typhoid
4. Malaria
Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement :
1. | Both are due to a qualitative defect in globin chain synthesis. |
2. | Both are due to a quantitative defect in globin chain synthesis. |
3. | Thalassemia is due to less synthesis of globin molecules. |
4. | Sickle cell anemia is due to a quantitative problem of globin molecules |
In the cloning of cattle, a fertilized egg is taken out of the mother’s womb and:
1. | From this up to eight identical twins can be produced |
2. | The egg is divided into four pairs of cells that are implanted into the womb of other cows. |
3. | In the eight-cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cows. |
4. | In the eight-cell stage, the individual cells are separated under the electrical field for further development in culture media. |
A common biocontrol agent for the control of plant diseases is
1. Trichoderma
2. Baculovirus
3. Bacillus thuringiensis
4. Glomus
A scion is grafted on a stock. The quality of fruits produced will depend upon the genotype of:
1. Scion
2. Stock
3. Both 1. and 2.
4. None of the above
Life cycle of Ectocarpus and Fucus respectively are:
1. Haplontic, Diplontic | 2. Diplontic, Haplodiplontic |
3. Haplodiplontic, Diplontic | 4. Haplodiplontic, Haplontic |
Tricarpellary, syncarpous gynoecium is found in flowers of:
1. Poaceae
2. Liliaceae
3. Solanaceae
4. Fabaceae
A marine cartilaginous fish that can produce electric current is:
1. | Pristis | 2. | Torpedo |
3. | Trygon | 4. | Scoliodon |
In which one of the following the BOD (Biochemical oxygen demand) of sewage (s), distellary effluent(DE), paper mill effluent (PE) and sugarmill effluent (SE) have been arranged in ascending order.
1. SE < PE < S < DE
2. PE < S < SE < DE
3. S < DE < PE < SE
4. SE < S < PE < DE
Consider the following statements (A)-(D) each with one or two blanks.
A. | Bears go into __(i)__ during winter to __(ii)__ cold weather |
B. | A conical age pyramid with a broad base represents __(iii)__ human population |
C. | A wasp pollinating a fig flower is an example of __(iv)___ |
D. | An area with high levels of species richness is known as __(v)___ |
1. | (ii) - Stable (iv) Commensalism, (v) Marsh |
2. | (i) - Aestivation, (v) - Escape, (iii) - Stable, (iv) - Mutualism |
3. | (iii) - Expanding, (iv) - Commensalism, (v) Biodiversity park |
4. | (i)- Hibernation, (ii) - Escape, (iii) - Expanding, (v) Hot spot |
Both, hydrarch and xerarch successions lead to:
1. Medium water conditions
2. Xeric conditions
3. Highly dry conditions
4. Excessive wet conditions
Which of the following is correct for r-selected species?
1. Large number of progeny with large size.
2. Small number of progeny with small size.
3. Small number of progeny with large size.
4. Large number of progeny with small size.
Menstrual flow occurs due to lack of
1. progesterone
2. FSH
3. oxytocin
4. vasopressin
The blood calcium level is lowered by the deficiency of
1. parathormone
2. thyroxine
3. calcitonin
4. Both 1 and 3
Non-membranous nucleoplasmic structures in nucleus are the site for active synthesis of
1. protein synthesis
2. mRNA
3. rRNA
4. tRNA
Kwashiorkor disease is due to
1. simultaneous deficiency of proteins and fats
2. simultaneous deficiency of proteins and calories
3. deficiency of carbohydrates
4. protein deficiency not accompanied by calorie deficiency
In a marriage between a male with blood group A and a female with blood group B, the progeny had either blood group AB or B. What could be the possible genotype of parents?
1. | IA i (Male) ; IB IB (Female) |
2. | IA IA (Male) ; IB IB (Female) |
3. | IA IA (Male) ; IB i (Female) |
4. | IA i (Male) ; IB i(Female) |
Which of the following diseases is an auto-immune disorder?
1. Myasthenia gravis
2. Arthritis
3. Osteoporosis
4. Gout
Artificial light, extended work-time and reduced sleep-time disrupt the activity of
1. Thymus gland | 2. Pineal gland |
3. Adrenal gland | 4. Posterior pituitary gland |
Which of the following sexually transmitted diseases do not specifically affect reproductive organs ?
1. Genital warts and Hepatitis-B
2. Syphilis and Genital herpes
3. AIDS and Hepatitis B
4. Chlamydiasis and AIDS
Which of the following statements is incorrect?
1. Cockroaches exhibit mosaic vision with less sensitivity and more resolution
2. A mushroom-shaped gland is present in the 6th-7th abdominal segments of male
3. A pair of spermatheca is present in the 6th segment of female cockroach
4. Female cockroach possesses sixteen ovarioles in the ovaries
The maximum volume of air a person can breathe in after a forced expiration is known as :
1. Expiratory Capacity
2. Vital Capacity
3. Inspiratory Capacity
4. Total Lung Capacity
A specialised nodal tissue embedded in the lower corner of the right atrium, close to Atrio-ventricular septum, delays the spreading of impulses to heart apex for about 0.1 sec.
This delay allows -
1. blood to enter aorta.
2. the ventricles to empty completely.
3. blood to enter pulmonary arteries.
4. the atria to empty completely.
Match the items in Column - I with those in Column - II:
Column - I | Column - II | ||
(a) | Podocytes | (i) | Crystallised oxalate |
(b) | Protonephridia | (ii) | Annelids |
(c) | Nephridia | (iii) | Amphioxus |
(d) | Renal calculi | (iv) | Filtration slits |
Select the correct option from the following:
(a) | (b) | (c) | (d) | |
1. | (iii) | (iv) | (ii) | (i) |
2. | (iii) | (ii) | (iv) | (i) |
3. | (iv) | (iii) | (ii) | (i) |
4. | (iv) | (ii) | (iii) | (i) |
Which of the following receptors are specifically responsible for maintenance of balance of body and posture ?
1. Basilar membrane and otoliths
2. Hair cells and organ of corti
3. Tectorial membrane and macula
4. Crista ampullaris and macula
Regeneration of damaged growing grass following grazing is largely due to :
1. Lateral meristem
2. Apical meristem
3. Intercalary meristem
4. Secondary meristem
Prosthetic groups differ from co-enzymes in that
1. they require metal ions for their activity.
2. they (prosthetic groups) are tightly bound to apoenzymes.
3. their association with apoenzymes is transient.
4. they can serve as co-factors in a number of enzyme-catalyzed reactions.
Crossing over takes place between which chromatids and in which stage of the cell cycle?
1. Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I.
2. Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I.
3. Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I.
4. Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I.
Which of the following is not a feature of active transport of solutes in plants ?
1. Occurs against concentration gradient
2. Non-selective
3. Occurs through membranes
4. Requires ATP
One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of :
1. | Violet and green light | 2. | Indigo and green light |
3. | Orange and yellow light | 4. | Blue and red light |
In order to increase the yield of sugarcane crop, which of the following plant growth regulators should be sprayed ?
1. | Ethylene | 2. | Auxins |
3. | Gibberellins | 4. | Cytokinins |
Thiobacillus is a group of bacteria helpful in carrying out:
1. Denitrification | 2. Nitrogen fixation |
3. Chemoautotrophic fixation | 4. Nitrification |
Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by:
1. | Phosphofructokinase | 2. | Aldolase |
3. | Hexokinase | 4. | Enolase |
Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology?
1. Genetic code is specific
2. Genetic code is not ambiguous
3. Genetic code is redundant
4. Genetic code is nearly universal
First discovered restriction endonuclease that always cuts DNA molecule at a particular point by recognizing a specific sequence of six base pairs is:
(1) EcoR1
(2) Adenosine deaminase
(3) Thermostable DNA polymerase
(4) Hind II