The correct location of the hypophysis in human body should be:
1. ethmoid sinuses
2. parietal bone
3. foramen magnum
4. sellaturcica
Where do you expect to find podocytes?
1. In the wall of afferent arteriole
2. In the wall of the DCT
3. In the lining of Bowman’s capsule
4. In the lining of Vasa recta
The formation of oxy-hemoglobin at the alveoli is favored by all the following except:
1. High pO2 | 2. Low pCO2 |
3. Lower H+ ion concentration | 4. Higher temperature |
Match the plasma proteins in Column I with their function in Column II and select the correct answer from the codes given:
Column I | Column II | ||
A. | Albumins | a. | Hemostasis |
B. | Globulins | b. | Transport carriers and immunity |
C. | Fibrinogen | c. | Colloid osmotic pressure |
Codes
A | B | C | |
1. | a | b | c |
2. | a | c | b |
3. | b | a | c |
4. | c | b | a |
The brain stem includes all the following except:
1. Medulla oblongata | 2. Pons |
3. Mid brain | 4. Cerebellum |
The major refractive surface in the human eye is the:
1. Anterior surface of cornea
2. Posterior surface of cornea
3. Anterior surface of lens
4. Posterior surface of lens
Which of the following can be used by females as injectable or implant contraceptives?
I: | Progesterone alone |
II: | Estrogen alone |
III. | A combination of progesterone and estrogen |
1. | I and II only |
2. | I and III only |
3. | II and III only |
4. | I, II and III |
The menstrual cycle starts with the:
1. | Follicular phase | 2. | Menstrual phase |
3. | Ovulatory phase | 4. | Secretory phase |
Which of the following will carry 46 chromosomes?
1. | Sperms | 2. | Spermatids |
3. | Secondary spermatocytes | 4. | Primary spermatocytes |
Hormonal control of the secretion of digestive juices is carried out by:
1. local hormones produced by the gastric and intestinal mucosa
2. hypothalamic hormones
3. hormones of the anterior pituitary gland
4. hormones of adrenal cortex
Match each item in Column I [zones of adrenal cortex] with one in Column II [hormone produced] and select your answer from the codes given:
Column I |
|
Column II |
|
A. |
Zona glomerulosa |
a. |
Aldosterone |
B. |
Zona fasciculata |
b. |
Cortisol |
C. |
Zona reticularis |
c. |
Adrenal androgens |
Codes
A | B | C | |
1. | a | b | c |
2. | a | c | b |
3. | b | a | c |
4. | b | c | a |
Consider the following statements:
I. G0 phase is viewed as either an extended G1 phase where the cell is neither dividing nor preparing to divide or as a distinct quiescent stage which occurs outside of the cell cycle.
II. In gamete production interphase is succeeded by meiosis.
III. In programmed cell death interphase is followed or preempted by apoptosis.
The correct statements include:
1. | II and III | 2. | I and III |
3. | I, II, and III | 4. | I only |
An alpha helix is a:
1. primary structure of a protein
2. secondary structure of a protein
3. tertiary structure of a protein
4. quaternary structure of a protein
Biogas is a mixture of:
1. Methane, Carbon dioxide, and Hydrogen sulfide
2. Methane, Carbon dioxide, and Ammonia
3. Methane, Ammonia, and Hydrogen sulfide
4. Ammonia, Carbon dioxide, and Hydrogen sulfide
The best evidence for tracing phylogeny amongst a group of organisms will be similarities in their:
1. | anatomy | 2. | DNA and Proteins |
3. | development | 4. | courtship behavior |
Which of the following will not counter natural selection?
1. genetic drift
2. gene flow
3. mutation
4. Unlimited resources
In recombinant DNA experiments, a vector:
1. | carries DNA into a new cell |
2. | links together newly joined fragments of DN |
3. | makes millions of copies of a specific segment of DNA |
4. | separates fragments of DNA by their length and electrical charges |
Replication in prokaryotes differs from replication in eukaryotes for which of the following reasons?
1. | Prokaryotic chromosomes have histones, whereas eukaryotic chromosomes do not. |
2. | Prokaryotic chromosomes have a single origin of replication, whereas eukaryotic chromosomes have many. |
3. | The rate of elongation during DNA replication is slower in prokaryotes than in eukaryotes. |
4. | Prokaryotes produce Okazaki fragments during DNA replication, but eukaryotes do not. |
In case of incomplete dominance, the F1 progeny of a monohybrid cross resembles:
1. | Either of the parents | 2. | The male parent |
3. | Neither of the parents | 4. | Both parents |
Which of the following is the most important factor that would lead to increased milk yield
in cattle?
1. Selection of good breeds
2. Selection of good breeds
3. Stringent cleanliness and hygiene
4. Provision of ideal environmental conditions for cattle
In angiosperms, triple fusion results in the formation of:
1. | Zygote | 2. | Endosperm |
3. | Nucellus | 4. | PEC |
Small masses of lymphatic tissue found throughout the ileum region of the small intestine are called:
1. | Paneth cells | 2. | Meissener’s Plexus |
3. | Peyer’s patches | 4. | Entero-chromaffin cells |
The density gradient in Meselson and Stahl's experiment was of:
1. | NH4Cl | 2. | CsCl |
3. | KCl | 4. | BaCl2 |
What is the mode of inheritance of phenylketonuria?
1. | Autosomal recessive | 2. | Autosomal dominant |
3. | Sex linked recessive | 4. | Sex linked dominant |
In a flower, if the megaspore mother cell forms megaspores without undergoing meiosis and if one of the megaspores develops into an embryo sac, its nuclei would be:
1. Haploid
2. Diploid
3. A few haploid and a few diploid
4. With varying ploidy
Silencing of a gene could be achieved through the use of:
1. | RNAi only | 2. | antisense RNA only |
3. | both RNAi and antisense RNA | 4. | none of the above |
An unconscious patient cannot be aroused by stimuli to normal consciousness but the doctors hope that recovery is possible. This patient is said to be:
1. In deep sleep
2. Comatosed
3. Brain dead
4. Malingering
Vegetative reproduction in mosses is by:
1. Fragmentation and budding in secondary protonema
2. Only budding in secondary protonema
3. Adventitious roots and budding in secondary protonema
4. Fragmentation and budding in sporophyte
The saprophytic protists are:
1. Slime moulds | 2. Protozoans |
3. Desmids | 4. Dinoflagellates |
Lichens are mutualistic symbiotic relationship between:
1. Roots of vascular plants and fungi
2. Roots of vascular plants and blue green algae
3. Algae and Fungi
4. Cnidarian and zooxanthelle
The cell junctions in animal tissues that perform the function of cementing to keep neighbouring cells together are known as:
1. Tight junctions
2. Adhering junctions
3. Gap junctions
4. Desmosomes
In a monocot stem:
1. Each vascular bundle is surrounded by a sclerenchymatous bundle sheath
2. Ground tissue is very poorly developed
3. Vascular bundles are conjoint and open with water containing cavities
4. Phloem parenchyma is present
A bud is present in the axil of:
I. petiole in simple leaves
II. petiole in compound leaves
III. leaflets of the compound leaves
1. Only I and II | 2. Only I and III |
3. Only II and III | 4. I, II and III |
Usually the anther in an angiosperm has:
1. two lobes and each lobe has two pollen sacs
2. two lobes and each lobe has one pollen sac
3. four lobes and each lobe has one pollen sac
4. four lobes and each lobe has two pollen sacs
Which one of the following statements is incorrect?
1. | In cockroaches and prawns, excretion of waste material occurs through malpighian tubules. |
2. | In ctenophores, locomotion is mediated by comb plates. |
3. | In Fasciola flame cells take part in excretion. |
4. | Earthworms are hermaphrodites and yet cross fertilization take place among them. |
Chordates are not characterized by:
1. | Ventral nerve cord | 2. | Post anal tail |
3. | Gill slits | 4. | A notochord |
Which of the following is not a function of cytoskeleton in a cell?
1. Intercellular transport
2. Maintenance of cell shape and structure
3. Support of the organelle
4. Cell motility
The material generally used for soundproofing rooms like a recording studio or an auditorium is:
1. | Cotton | 2. | Coir |
3. | Wood | 4. | Styrofoam |
An abnormal warming of surface ocean waters in the eastern tropical Pacific is termed as:
1. | El Nino | 2. | La Nina |
3. | ENSO | 4. | Ocean hazard |
Which of the following continents has the highest biodiversity?
1. | South America | 2. | Africa |
3. | Europe | 4. | Asia |
Identify the incorrectly matched pair:
Ecosystem service |
Cost out of total [%] |
|
1. |
Soil formation |
50 |
2. |
Nutrient cycling |
10 |
3. |
Climate regulation |
6 |
4. |
Habitat for wildlife |
3 |
The annual net primary productivity of whole biosphere is approximately:
1. | 25 billion tons | 2. | 55 billion tons |
3. | 70 billion tons | 4. | 170 billion tons |
Not all parasitism involves feeding on the body of the host. The exception is:
1. ectoparasitism
2. endoparasitism
3. parasitoids
4. brood parasitism
What percent of animals cannot maintain a constant internal environment?
1. 1 %
2. 25 %
3. 45 %
4. 99 %
The maximum concentration of alcohol in beverages that are naturally fermented is about:
1. 5 – 8 % | 2. 13 – 15 % |
3. 33 – 34 % | 4. 47 – 49 % |
The stroma lamellae membranes:
1. have both PS II and NADP reductase enzyme
2. have PS II but not NADP reductase enzyme
3. lack PS II but have NADP reductase enzyme
4. lack both PS II and NADP reductase enzyme
The control points where a plant adjusts the quality and types of solutes that reach the xylem are:
1. Transport proteins of endodermal cells | 2. Root hair |
3. Parenchyma cells of the root cortex | 4. Casparian strips |
A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of
1. Fats | 2. Amino acids |
3. Ketones | 4. Glucose |
Low Ca2+ in the body fluid may be the cause of
1. Angina pectoris
2. Gout
3. Tetany
4. Anemias
During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?
1. First positive, then negative and again back to positive.
2. First negative, then positive and again back to negative.
3. First positive, then negative and continue to be negative.
4. First negative, then positive and continue to be positive.
In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?
1. P-depolarization of ventricles
2. R-repolarization of ventricles
3. S-start of systole
4. T-end of diastole
Select the correct matching of a hormone, its source and function.
Hormone |
Source |
Function |
|
1. |
Norepinephrine |
Adrenal medulla |
Increases heartbeat, rate of respiration and alertness |
2. |
Glucagon |
Beta-cells of islets of Langerhans |
Stimulates glycogenolysis |
3. |
Prolactin |
Posterior pituitary |
Regulates growth of mammary glands and milk formation in females |
4. |
Vasopressin |
Posterior pituitary |
Increases loss of water through urine |
Which of the following hormones is not a secretion product of human placenta?
1. Prolactin
2. Oestrogen
3. Progesterone
4. Human chorionic gonadotropin
The richest sources of vitamin B12 are
1. Chocolate and green gram.
2. Rice and hen’s egg
3. Carrot and chicken’s breast.
4. Goat’s liver and Spirulina
Presence of the gills in the tadpole of a frog indicates that:
1. fishes evolved from frog-like ancestors
2. frogs will have gills in future
3. frogs evolved from gilled ancestors
4. fishes were amphibious in the past
Which of the following is not required for any of the techniques of DNA fingerprinting available at present?
1. | DNA -DNA hybridization | 2. | Polymerase chain reaction |
3. | Zinc finger analysis | 4. | Restriction enzymes |
In bacterial DNA replication, synthesis starting from the site of origin of replication
1. Involves RNA primers
2. Requires telomerase
3. Proceeds unidirectionally
4. Moves bidirectionally
Male gametophyte in angiosperms produces:
1. Single sperm and a vegetative cell
2. Single sperm and two vegetative cells
3. Three sperms
4. Two sperms and a vegetative cell
An example of a seed with endosperm, perisperm, and caruncle is:
1. | castor | 2. | cotton |
3. | coffee | 4. | lily |
The movement of a gene from one linkage group to another is called :
1. Duplication
2.Translocation
3. Crossing over
4. Inversion
Which of the following is the most suitable medium for the culture of Drosophila melanogaster?
1. | Cow dung | 2. | Moist bread |
3. | Agar agar | 4. | Ripe Banana |
Which one is a neem product used as insect repellent?
1. Rotenone
2. Azadirachtin
3. Parathion
4. Endrin
A stage in cell division is shown in the figure. Select the answer which gives the correct identification of the stage with its characteristics.
Stages | Description | |
1. | Telophase | Nuclear envelop reforms, Golgi complex reforms |
2. | Late anaphase | Chromosomes move away from equatorial plate, Golgi complex not present |
3. | Cytokinesis | Cell plate formed, mitochondria distributed between two daughter cells |
4. | Telophase | Endoplasmic reticulum and nucleolus not reformed yet |
Gymnosperms are also called soft wood spermatophytes because they lack :
1. Cambium
2. Phloem fibres
3. Thick-walled tracheids
4. Xylem fibres
Pick the wrong statement:
1. Protista have photosynthetic and heterotrophic modes of nutrition
2. Some fungi are edible
3. Nuclear membrane is present in Monera
4. Cell wall is absent in Animalia
Coconut fruit is a
1. Drupe
2. Berry
3. Nut
4. Capsule
Read the different components from (a) to (d) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem
(a) Secondary cortex
(b) Wood
(c) Secondary phloem
(d) Phellem
The correct order is:
1. (a), (b), (d), (c) | 2. (d), (a), (c), (b) |
3. (d), (c), (a), (b) | 4. (c), (d), (b), (a) |
The cells lining the blood vessels belong to the category of
1. Smooth muscle tissue
2. Squamous epithelium
3. Columnar epithelium
4. Connective tissue
Which of the following endoparasites of humans does show viviparity?
1. Enterobius vermicularis
2. Trichinella spiralis
3. Ascaris lumbricoides
4. Ancylostoma duodenale
Spindle fibres attach on to:
1. Kinetosome of the chromosome
2. Telomere of the chromosome
3. Kinetochore of the chromosome
4. Centromere of the chromosome
A typical fat molecule is made up of :
1. Three glycerol and three fatty acid molecules
2. Three glycerol molecules and one fatty acid molecule
3. One glycerol and three fatty acid molecules
4. One glycerol and one fatty acid molecule
Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?
1. Reduced Immune System
2. Damage to eyes
3. Increased liver cancer
4. Increased skin cancer
In which one of the following habitats does the diurnal temperature of soil surface vary most?
1. Forest
2. Desert
3. Grassland
4. Shrub land
Coiling of garden pea tendrils around any support is an example of
1. thigmotaxis
2. thigmonasty
3. thigmotropism
4. thermotaxis
The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called
1. glycolysis
2. fermentation
3. aerobic respiration
4. photorespiration
The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is :
1. | cytochrome | 2. | iron-sulphur protein |
3. | ferredoxin | 4. | quinone |
The first stable product of fixation of atmospheric nitrogen in leguminous plants is
1.
2. ammonia
3.
4. glutamate
Given below are four methods (A-D) and their modes of action (a-d) in achieving contraception. Select their correct matching from the four options that follow:
Method |
Mode of action |
||
A |
The pill |
a |
Prevents sperms from reaching the ovum |
B |
Condom |
b |
Prevents implantation |
C |
Vasectomy |
c |
Prevents ovulation |
D |
Copper - T |
d |
Semen contains no sperms |
Options: | (a) | (b) | (c) | (d) |
1. | c | a | d | b |
2. | d | a | b | c |
3. | c | d | a | b |
4. | b | c | a | d |
The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of
1. lignified thick walls
2. cohesion and adhesion
3. weak gravitational pull
4. transpiration pull
What is vital capacity of our lungs?
1. Inspiratory reserve volume plus tidal volume
2. Total lung capacity minus expiratory reserve volume
3. Inspiratory reserve volume plus expiratory reserve volume
4. Total lung capacity minus residual volume
Graves' disease is caused due to?
1. hyposecretion of thyroid gland
2. hypersecretion of thyroid gland
3. hyposecretion of adrenal gland
4. hypersecretion of adrenal gland
Select the correct sequence of events:
1. | Gametogenesis → Gamete transfer → Syngamy → Zygote → Cell division (Cleavage) → Cell differentiation → Organogenesis |
2. | Gametogenesis → Gamete transfer → Syngamy → Zygote → Cell division (Cleavage) → Organogenesis → Cell differentiation |
3. | Gametogenesis → Syngamy → Gamete transfer → Zygote → Cell division (Cleavage) → Cell differentiation → Organogenesis |
4. | Gametogenesis → Gamete transfer → Syngamy → Zygote → Cell differentiation → Cell division (Cleavage) → Organogenesis |
DNA precipitation out of a mixture of biomolecules can be achieved by treatment with:
1. | Chilled chloroform |
2. | isopropanal |
3. | Chilled ethanol |
4. | Methanol at room temperature |
Extrusion of the second polar body from egg nucleus occurs:
1. simultaneously with first cleavage
2. after entry of sperm but before fertilization
3. after fertilization
4. before entry of sperm into ovum
Select the correct group of biocontrol agents:
1. | Nostoc, Azospirillium, Nucleopolyhedrovirus |
2. | Bacillus thuringiensis. Tobacco mosaic virus, Aphids |
3. | Trichoderma, Baculovirus, Bacillus thuringiensis |
4. | Oscilatoria, Rhizobium, Trichoderma |
According to Robert May, the global species diversity is about:
1. 20 Million
2. 50 Million
3. 7 Million
4. 1.5 Million
Match the following diseases with the causative organism and select the correct option.
Column -I | Column- II |
(a) Typhoid | (i) Wuchereria |
(b) Pneumonia | (ii) Plasmodium |
(c) Filariasis | (iii) Salmonella |
(d) Malaria | (iv) Haemophilus |
(a) | (b) | (c) | (d) | |
(1) | (iii) | (iv) | (i) | (ii) |
(2) | (ii) | (i) | (iii) | (iv) |
(3) | (iv) | (i) | (ii) | (iii) |
(4) | (i) | (iii) | (ii) | (iv) |
Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (BT) is resistant to
1. Fungal diseases
2. Plant nematodes
3. Insect predators
4. Insect pests
A species which was introduced for ornamentation but has become a troublesome weed in India :
(1) Parthenium hysterophorus
(2) Eichhornia crassipes
(3) Prosopis juliflora
(4) Trapa Spinosa
Which of the following statements is incorrect?
(1) Biomass decreases from first to fourth trophic level
(2) Energy content gradually increases from first to fourth trophic level
(3) Number of individuals decreases from first trophic level to fourth trophic level
(4) Energy content gradually decreases from first to fourth trophic level