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 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 |
Which of the following exhibits the highest rate of respiration?
1. Growing shoot apex | 2. Germinating seed |
3. Root tip | 4. Leaf bud |
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 |
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 |
Which of the following is a partial root parasite?
1. Sandalwood
2. Mistletoe
3. Orobanche
4. Ganoderma
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 |
Select the correct statement about G1 phase
1. Cell is metabolically inactive
2. DNA in the cell does not replicate
3. It is not a phase of synthesis of macromolecules
4. Cell stops growing
Which of the following plants is used to extract the blue dye?
1. Trifolium
2. Indigofera
3. Lupin
4. Cassia
When we peel the skin of a potato tuber, we remove
1. Periderm
2. Epidermis
3. Cuticle
4. Sapwood
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
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
Anisogamous sexual reproduction is seen in:
1. Ulothrix
2. Spirogyra
3. eudorina
4. Fucus
The thermostat of human body is located in:
1. Hypothalamus
2. Cerebrum
3. Cerebellum
4. Thalamus
A common biocontrol agent for the control of plant diseases is
1. Trichoderma
2. Baculovirus
3. Bacillus thuringiensis
4. Glomus
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 |
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
Satellite DNA is useful tool in
1. Sex determination
2. Forensic science
3. Genetic engineering
4. Organ transplantation
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 dominating pollinating agent of flowering plants amongst animals are:
1. | Arboreal mammals | 2. | Insects |
3. | Birds | 4. | Reptiles |
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 |
An abnormal human of the karyotype 49, XXXYY will form how many Barr bodies?
1. 1
2. 2
3. 3
4. 4
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
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.
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
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 an electron microscopic structure of:
1. | Cilium | 2. | Flagellum |
3. | Fimbria | 4. | Centriole |
Non-membranous nucleoplasmic structures in nucleus are the site for active synthesis of
1. protein synthesis
2. mRNA
3. rRNA
4. tRNA
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
For imbibition to occur, affinity between the adsorbant and the liquid is:
1. not essential
2. not essential since imbitition is also a diffusion
3. not essential if occurring against the concentration gradient
4. a pre-requisite
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.
Edaphic factor refers to :
1. Water
2. Soil
3. Relative humidity
4. Altitude
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 |
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
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 |
The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as :
1. Microtubules
2. Microfilaments
3. Intermediate filaments
4. Lamins
Which of the following cells is in transition to metaphase?
1 | 2. | ||
3. | 4. |
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
A normal couple has seven children (2 daughters and 5 sons). Three of the sons suffer from a hereditary disorder but none of the daughters is affected. Which is the inheritance type
1. Sex-limited recessive
2. Autosomal dominant
3. Sex-linked dominant
4. Sex-linked recessive.
A test cross is carried out to:
1. Determine the genotype of a plant at F2.
2. Predict whether two traits are linked.
3.Assess the number of alleles of a gene.
4. Determine whether two species or varieties will breed successfully.
A dioecious flowering plant prevents both:
1. | Autogamy and xenogamy |
2. | Autogamy and geitonogamy |
3. | Geitonogamy and xenogamy |
4. | Cleistogamy and xenogamy |
At any instant, RNA is transcribed on which of the following strands of DNA?
1. | Coding strand | 2. | Template strand |
3. | Lagging strand | 4. | Leading strand |
A segment of DNA coding for a polypeptide is most accurately defined as:
1. | Operon | 2. | Gene |
3. | Recon | 4. | Cistron |
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
The blood calcium level is lowered by the deficiency of
1. parathormone
2. thyroxine
3. calcitonin
4. Both 1 and 3
Menstrual flow occurs due to lack of
1. progesterone
2. FSH
3. oxytocin
4. vasopressin
A marine cartilaginous fish that can produce electric current is:
1. | Pristis | 2. | Torpedo |
3. | Trygon | 4. | Scoliodon |
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 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.
Which of the following mouth parts of cockroach are paired?
1. Labrum | 2. Labium |
3. Hypopharynx | 4. Maxilla |
Widal test is used for the diagnosis of
1. Pneumonia
2. Tuberculosis
3. Typhoid
4. Malaria
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
The early screening test for HIV infection is :
1. ELISA
2. Western Blot
3. Culture of HIV
4. Detection of opportunistic infections
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 |
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 |
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 |
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 |
The cessation of menstrual cycles is called as:
1. | Menarche | 2. | Thelarche |
3. | Pubarche | 4. | Menopause |
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 |
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 |
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 |
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 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
The main respiratory center in humans is located in:
1. Hypothalamus
2. Thalamus
3. Medulla oblongata
4. Pons
A reduction in expanded extracellular fluid (ECF) volume by increasing renal sodium excretion is a function of:
1. ADH
2. Aldosterone
3. Angiotensin II
4. ANF
Urine in ureter is drained directly from:
1. | Collecting duct | 2. | Papilla |
3. | Renal pelvis | 4. | Major calyces |
The metacarpo-phalangeal joint will be an example of what type of the synovial joint?
1. condyloid
2. gliding
3. saddle
4. hinge
What types of digestive hydrolytic enzymes are commonly secreted as zymogens [inactive precursors]?
1. Proteolytic
2. Carbohydrases
3. Lipases
4. Nucleases
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
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
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.
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
Which of the following statements is correct?
1. The ascending limb of the loop of Henle is impermeable to water
2. The descending limb of the loop of Henle is impermeable to water
3. The ascending limb of the loop of Henle is permeable to water
4. The descending limb of the loop of Henle is permeable to electrolytes
The phase of menstrual cycle in humans that lasts for 7-8 days is:
1. follicular phase
2. ovulatory phase
3. luteal phase
4. menstruation
A bacterial cell was transformed with a recombinant DNA molecule that was generated using a human gene. However, the transformed cells did not produce the desired protein. The reasons could be:
1. | Human genes may have intron which bacteria cannot process |
2. | Amino acid codons for humans and bacteria are different |
3. | Human protein is formed but degraded by bacteria |
4. | All of the above |
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. |
A foetus receiving some antibodies from mother through placenta is an example of:
1. | Naturally acquired active immunity |
2. | Artificially acquired active immunity |
3. | Artificially acquired passive immunity |
4. | Naturally acquired passive immunity |
Consider the following statements regarding bird flu:
I. Viruses causing bird flu belong to Influenza virus A strain
II. The most pathogenic strain of this virus causing bird flu is H1N1
III. Culling and vaccinating livestock is a short term strategy to prevent flu pandemic.
IV. A human vaccine is available to control the spread of disease in human populations.
Of the above statements, the correct are:
1. I and III only
2. II and IV only
3. I, III and IV only
4. I, II, III and IV
Darwin got the idea of ‘common descent with modification’ as evolution initially from his observations on:
1. geographic distribution of species
2. fossil records
3. comparative embryology
4. comparative biochemistry
In organic evolution what is it that actually evolves?
1. | individual | 2. | family |
3. | population | 4. | species |
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
Enzymes, vitamins and hormones are common in :
1. Being proteinaceous
2. Being synthesized in the body of organisms
3. Enhancing oxidative metabolism
4. Regulating metabolism
Graves’ disease is characterized by all the following except:
1. | Exopthalmos | 2. | Tachycardia |
3. | Toxic goiter | 4. | Weight gain |
The autonomic neural system relays impulse from the CNS to:
I. skeletal muscles
II. smooth muscles
III. involuntary organs
1. I and II only | 2. I and III only |
3. II and III only | 4. I, II and III |
Which of the following would not be normal in a healthy human being?
1. A cells/blood ratio of 45%
2. A plasma albumin concentration of 4%
3. An RBC count of 5.2 million mm-3
4. A hemoglobin level of 15 gram per liter
Pulmonary fibrosis is the feature of all cases of:
1. Occupational respiratory disorders
2. Emphysema
3. Pneumonia
4. Bronchial asthma
During muscle contraction, the part that does not get shortened in length is labeled as the letter:
1. A | 2. B |
3. C | 4. D |