The joint between atlas and axis vertebra is classified as:
1. | Saddle joint | 2. | Pivot joint |
3. | Gliding joint | 4. | Hinge joint |
JGA is a special sensitive region formed by cellular modifications in the:
1. DCT and the afferent arteriole at the location of their contact
2. DCT and the efferent arteriole at the location of their contact
3. PCT and the afferent arteriole at the location of their contact
4. PCT and the efferent arteriole at the location of their contact
Aderenal cortex releases aldosterone when activated by:
1. ADH
2. Low potassium concentration in ECF
3. Angiotensin II
4. Renin
The volume of thoracic chamber in the antero-posterior axis can be increased by:
1. Contraction of diaphragm
2. Relaxation of diaphragm
3. Contraction of external intercostals
4. Contraction of internal intercostals
To prevent eryhtroblastosis fetalis in future pregnancies:
1. | Anti-Rh Immunoglobulins must be given to Rh –ve mothers at the time of each delivery |
2. | Anti-Rh Immunoglobulins must be given to new born at the time of each delivery |
3. | Rh Antigens must be given to new born at the time of each delivery |
4. | Anti Antigens must be given to Rh –ve mothers at the time of each delivery |
Crista ampullaris is found in:
1. Semi-circular canals | 2. Utricle |
3. Saccule | 4. Cochlea |
To increase their contraceptive efficiency, the barrier contraceptives in females are used with:
1. | IUDs | 2. | OCPs |
3. | Spermicidal chemicals | 4. | Implants |
From outside to inside, the correct sequence of cells in the inner layer of human retina will be:
1. Photoreceptor cells, Bipolar cells, Ganglion cells
2. Ganglion cells, Bipolar cells, Photoreceptor cells
3. Photoreceptor cells, Ganglion cells, Bipolar cells
4. Ganglion cells, Photoreceptor cells, Bipolar cells
What is the usual number of primary follicles in both ovaries of a female at puberty?
1. | 60000 – 80000 | 2. | 120000 – 160000 |
3. | 1 million to 2 million | 4. | About 7 million |
Identify the part that helps in the collection of the ovum after ovulation:
1. | 4 | 2. | 5 |
3. | 6 | 4. | 7 |
Which of the following is a sub-mucosal gland?
1. Sublingual salivary gland
2. Pyloric glands
3. Brunner’s glands
4. Submandibular salivary gland
The functions regulated or influenced by thyroid glands in humans include all except:
1. | basal metabolic rate | 2. | erythropoeisis |
3. | water and electrolyte balance | 4. | sleep wakefulness cycle |
The most abundant enzyme is :
1. Carbonic anhydrase
2. Nitrogenase
3. Catalase
4. Rubisco
Consider the two statements:
I: | Organisms exhibiting external fertilisation show great synchrony between the sexes. |
II: | Such organisms release a large number of gametes into the surrounding medium (water). |
1. | Both I and II are correct and II explains I. |
2. | Both I and II are correct but II does not explain I. |
3. | I is correct but II is incorrect. |
4. | Both I and II are incorrect. |
The full potential of penicillin as an antibiotic was established by:
1. | Alexander Fleming | 2. | Florey and Chain |
3. | Avery and McCarty | 4. | Hershey and Chase |
According to the Darwinian concept of evolution, a giraffe has a long neck because:
1. | it was always like that since the beginning |
2. | during evolution the number of cervical vertebrae got increased |
3. | its ancestors stretched their necks to get food |
4. | ancestral giraffes with longer necks got more food and left more surviving offspring |
The wings of birds, the forelegs of a horse, and the upper limbs of humans are:
1. | analogous structures | 2. | homologous structures |
3. | vestigial structures | 4. | phylogenetic structures |
The following palindrome is recognized by the restriction enzyme:
1. | BamHI | 2. | EcoRI |
3. | HindII | 4. | PstI |
What defines the template and coding strand of DNA for transcription?
1. Presence of the structural gene in a transcription unit
2. The core RNA polymerase enzyme
3. Presence of the promoter in a transcription unit
4. Presence of 3’ – 5’ TAC codon on the DNA template
What step in the plant breeding experiments actually brings about the improvement of the crop?
1. Selection and testing of superior recombinants
2. Cross hybridisation among the selected parents
3. Evaluation and selection of parents
4. Testing, release and commercialisation of new cultivars
Filiform apparatus is associated with _____ and helps in _____________.
1. Syngergids; Nourishment of egg cells
2. Synergids; Guiding the pollen tube
3. Antipodals; Nourishment of egg cells
4. Antipodals; Guiding the pollen tube
Rheumatoid arthritis is:
1. X – linked recessive disorder
2. Congenital disorder
3. A viral infection
4. An auto-immune disorder
Which of the following acts as a ribozyme for peptide bond formation in bacteria?
1. | 5s rRNA | 2. | 23s rRNA |
3. | 16s rRNA | 4. | 5.1s rRNA |
Haemophilia is inherited as a/an __________ condition.
1. | Autosomal recessive | 2. | Autosomal dominant |
3. | Sex linked recessive | 4. | Sexlinked dominant |
In the case of co-dominance, the F1 generation resembles:
1. | Dominant parent | 2. | Recessive parent |
3. | Both the parents | 4. | None of the parents |
In a fertilised embryo sac, the haploid, diploid, and triploid structures are:
1. | Synergid, zygote, and primary endosperm nucleus |
2. | Synergid, antipodal and polar nuclei |
3. | Antipodal, synergid, and primary endosperm nucleus |
4. | Synergid, polar nuclei and zygote. |
The trigger for activation of toxin of Bacillus thuringiensis is:
1. | Acidic pH of stomach |
2. | High temperature |
3. | Alkaline pH of gut |
4. | Mechanical action in the insect gut |
Perhaps the most obvious and technically complicated feature of all living organisms is:
1. Capability to reproduce to produce similar offspring
2. Ability to grow from inside
3. Ability to sense and respond to environmental stimuli
4. Metabolism inside a defined boundary of a cell
Identify the incorrectly matched pair:
1. |
Numerical taxonomy |
Based on all observable characteristics |
2. |
Cytotaxonomy |
Based on chromosome number, structure and behavior |
3. |
Chemotaxonomy |
Based on chemotrophic mode of nutrition |
4. |
Phylogenetic system |
Based on evolutionary relationships |
The phenomenon of red tides is associated with blooms of:
1. Zooxanthelle | 2. Gonyaulax |
3. Blue green algae | 4. Ctenoplana and Beroe |
Which of the following viruses has both DNA and RNA as its genetic material?
1. | Retroviruses | 2. | Bacteriophages |
3. | Plant viruses | 4. | None |
A prolonged resting phase in oogenesis as seen in many vertebrate oocytes is called as:
1. Interkinesis | 2. Diakinesis |
3. Diplotene | 4. Prometaphase II |
The hypodermis of a dicotyledonous stem:
1. is parenchymatous and synthesizes and stores food
2. is collenchymatous and provides mechanical strength to the young stem
3. is sclerenchymatous and provides mechanical strength to the young stem
4. is parenchymatous and provides mechanical strength to the young stem
When sepals or petals in a whorl just touch one another at the margin, without overlapping, the aestivation is said to be:
1. | Valvate | 2. | Twisted |
3. | Imbricate | 4. | Vexillary |
A lateral branch arises from the base of the main axis and after growing aerially for some time arches downwards to touch the ground in:
1. Opuntia and Euphorbia | 2. Mint and Jasmine |
3. Pistia and Eichhornia | 4. Banana and Pineapple |
Which one of the followings statements is true for cockroach?
1. The numbers of ovarioles in each ovary are ten.
2. The larval stage is called caterpillar.
3. Anal styles are absent in females.
4. They are ureotelic.
Which one of the following sets of animals share a four chambered heart?
1. Amphibians, Reptiles, Birds
2. Crocodiles, Birds, Mammals
3. Crocodiles, Lizards, Turtles
4. Lizards, Mammals, Birds
Which of the following statements is true for a secretory cell?
1. Golgi apparatus is absent
2. Rough Endoplasmic Reticulum (RER) is easily observed in the cell
3. Only Smooth Endoplasmic Reticulum (SER) is seen in the cell
4. Secretary granules are formed in nucleus
Which of the following is not a consequence of global warming?
1. | a rise in sea levels |
2. | a change in precipitation patterns |
3. | an equatorial shift of many species |
4. | eruption of plant diseases, pests, and weeds |
CFC have a continuing effect on ozone layer as:
1. | the Cl atoms formed by them only act as catalysts in reactions causing degradation of ozone |
2. | the Cl atoms formed by them are used up in reactions causing degradation of ozone |
3. | they are being produced in increasing amounts all over the world |
4. | they are efficiently absorbed by the atmospheric water vapours |
In a biosphere reserve, active cooperation with local people is established in the:
1. | Natural zone | 2. | Core zone |
3. | Buffer zone | 4. | Transition zone |
Carbon dioxide is returned to the atmosphere by all the following except:
1. photosynthesis by the primary producers
2. respiratory activities of producers and consumers
3. decomposers
4. volcanic activity
All the following relations are examples of commensalism except:
1. Sea anemone and clown fish
2. Cattle egret and grazing cattle
3. Barnacles growing on the back of whale
4. Cuscuta growing on hedge plants
The enzymatic machinery to partially oxidize glucose without the help of oxygen is present in:
1. All living organisms
2. All prokaryotes only
3. Prokaryotes and obligate anaerobes only
4. Facultative and obligate anaerobes only
When do you think the chloroplasts will be aligned with their flat surfaces parallel to the walls of the mesophyll cells?
1. In dark
2. When light intensity is low
3. When light intensity is high
4. They are always aligned parallel to the walls
Match the element with its associated functions/roles and choose the correct option among given below:
A. Boron |
i. Splitting of H2O to liberate O2 during photosynthesis |
B. Manganese |
ii. Needed for synthesis of auxins |
C. Molybdenum |
iii. Component of nitrogenase |
D. Zinc |
iv. Pollen germination |
E. Iron |
v. Component of ferredoxin |
Options:
A | B | C | D | E | |
1. | i | ii | iii | iv | v |
2. | iv | i | iii | ii | v |
3. | iii | ii | iv | v | i |
4. | ii | iii | v | i | iv |
You are asked to measure transpiration rates on both the surfaces of Sunflower leaf. The transpiration rate is expected to be:
1. Lesser on upper surface and more on lower surface
2. Lesser on lower surface and more on upper surface
3. Equal on both the surfaces
4. Zero on upper surface
Approximately what percentage of existing animal species are invertebrates?
1. | 20 | 2. | 50 |
3. | 70 | 4. | 95 |
Which of the following pairs is correctly matched?
Joint |
Location |
|
1 |
Fibrous joint |
Between phalanges |
2 |
Cartilaginous joint |
Skull bones |
3 |
Gliding joint |
Between zygapophysial of the successive vertebrae |
4 |
Hinge joint |
Between vertebrae |
Which of the following substances, if introduced into the bloodstream, would cause coagulation of blood at the site of its introduction?
1. Thromboplastin
2. Fibrinogen
3. Heparin
4. Prothrombin
Damage to thymus in a child may lead to
1. A reduction in haemoglobin content of blood
2. A reduction in stem cell production
3. Loss of antibody mediated immunity
4. Loss of cell mediated immunity
If a random mating population is in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner?
1. Mutations
2. Random drift
3. Selection
4. Migration
Commonly used vectors for human genome sequencing are:
1. T - DNA
2. BAC and YAC
3. Expression Vectors
4. T/A Cloning Vectors
During transcription, RNA polymerase binds to DNA site
1. Regulator
2. Promoter
3. Enhancer
4. Receptor.
Which one of the following statements is not true?
1. | Pollen grains of some plants cause severe allergies and bronchial afflictions in some people. |
2. | The flowers pollinated by flies and bats secrete foul odour to attract them. |
3. | Honey is made by bees by digesting pollen collected from flowers. |
4. | Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups. |
In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to:
1. Acidic pH of the insect gut
2. Action of gut micro-organisms
3. Presence of conversion factors in insect gut
4. Alkaline pH of the insect gut
In which disease does the mosquito transmitted pathogen cause chronic inflammation of lymphatic vessels?
1. | Elephantiasis | 2. | Amoebiasis |
3. | Ringworm disease | 4. | Ascariasis |
Fruit colour in squash is an example of :
1. Recessive epistasis
2. Dominant epistasis
3. Complementary genes
4. Inhibitory genes
A woman with 47 chromosomes due to presence of additional 21 chromosomes is characterised by
1. Super female
2. Turner’s syndrome
3. Down’s syndrome
4. Triploidy
Synapsis occurs between
1. mRNA and ribosomes
2. Spindle fibers and centromere
3. Two homologous chromosomes
4. A male and a female gamete
Consider the following four statements whether they are correct or wrong,
(A) The sporophyte in liverworts is more elaborate than that in mosses.
(B) Salvinia is heterosporous.
(C) The life-cycle in all seed-bearing plants is diplontic.
(D) In Pinus, male and female cones are borne on different trees.
The two wrong statements together are
1. (A) and (C) | 2. (A) and (D) |
3. (B) and (C) | 4. (A) and (B) |
Which of the following shows coiled RNA strand and capsomeres?
1. Polio virus
2. Tobacco mosaic virus
3. Measles virus
4. Retro virus
How many plants in the list given below have composite fruits that develop from an inflorescence: walnut, poppy, radish, fig, pineapple, apple, tomato, mulberry
1. Four
2. Five
3. Two
4. Three
Interfascicular cambium develops from the cells of:
1. Xylem parenchyma | 2. Endodermis |
3. Pericycle | 4. Medullary rays |
Mast cells of connective tissue contain
1. vasopressin and relaxin
2. heparin and histamine
3. heparin and calcitonin
4. serotonin and melanin
Infection of Ascaris usually occurs by
1. Eating imperfectly cooked pork.
2. Tse - tse fly.
3. Mosquito bite.
4. Drinking water containing eggs of Ascaris
Which of the following structure is not found in a prokaryotic cell?
1.Ribosome
2.Mesosome
3.Plasma membrane
4.Nuclear envelope
Which one of the following statements is incorrect?
1. In competitive inhibition, the inhibitor molecule is not chemically changed by the enzyme.
2. The competitive inhibitor does not affect the rate of breakdown of the enzyme-substrate complex.
3. The presence of the competitive inhibitor decreases the Km of the enzyme for the substrate.
4. A competitive inhibitor reacts reversibly with the enzyme to form an enzyme-inhibitor complex.
Kyoto Protocol was endorsed at :
1. CoP– 5
2. CoP - 6
3. CoP - 4
4. CoP– 3
The two gases making the highest relative contribution to the greenhouse gases are:
1. and
2. CFCs and
3. and
4. and
In which of the following do both pairs have the correct combination?
1. | In situ conservation: Cryopreservation Ex situ conservation: Wildlife Sanctuary |
2. | In situ conservation: Seed Bank Ex situ conservation: National Park |
3. | In situ conservation: Tissue culture Ex situ conservation: Sacred groves |
4. | In situ conservation: National Park Ex situ conservation: Botanical Garden |
The accompanying figure represents an ecological pyramid. It is
1. | Pyramid of numbers in a grassland |
2. | Pyramid of biomass in a fallow land |
3. | Pyramid of biomass in a lake |
4. | Energy pyramid in a spring |
The mass of living material at a trophic level at a particular time is called:
1. Standing state
2. Net primary productivity
3. Standing crop
4. Gross primary productivity
The logistic population growth is expressed by the equation:
1. | 2. | ||
3. | 4. |
Mycorrhiza is an example of:
1. | Symbiotic relationship | 2. | ectoparasitism |
3. | endoparasitism | 4. | decomposers |
What causes a green plant exposed to the light on only one side, to bend toward the source of light as it grows?
1. Green plants need light to perform photosynthesis
2. Green plants seek light because they are phototropic
3. Light stimulates plant cells on the lighted side to grow faster
4. Auxin accumulates on the shaded side, stimulating greater cell elongation
The correct sequence of cell organelles during photorespiration is
1. chloroplast-golgi bodies-mitochondria
2. chloroplast-rough endoplasmic reticulum-dictyosomes
3. chloroplast-peroxisome-mitochondria
4. chloroplast-vacuole-peroxisome
What is the figure given below showing in particular?
1. | Ovarian cancer | 2. | Uterine cancer |
3. | Tubectomy | 4. | Vasectomy |
Grey crescent is the area
1. at the point of entry of sperm into ovum
2. just opposite to the site of entry of sperm into ovum
3. at the animal pole
4. at the vegetal pole
The water potential of pure water is
1. zero
2. less than zero
3. more than zero, but less than one
4. more than one
People who have migrated from the planes to an area adjoining Rohtang Pass about six months back
1. have more RBCs and their haemoglobin has a lower binding affinity to
2. are not physically fit to play games like football
3. suffer from altitude sickness with symptoms like nausea, fatigue, etc.
4. have the usual RBC count but their haemoglobin has very high binding affinity to
Which one of the following pairs of the kind of cells and their secretion is correctly matched?
1. Oxyntic cells --- a secretion with pH between 2.0 and 3.0
2. Alpha cells of islets of Langerhans ---- secretion that decreases blood sugar level
3. Kupffer cells --- a digestive enzyme that hydrolyses nucleic acids
4. Sebaceous glands --- a secretion that evaporates for cooling
Injury to vagus nerve in humans is not likely to affect
1. tongue movements
2. gastrointestinal movements
3. pancreatic secretion
4. cardiac movements.
In man, in which part of the uriniferous tubule reabsorption of glucose occurs?
1. Collecting tube
2. Henle's loop
3. Distal convoluted tubule
4. Proximal convoluted tubule
In a child of 15 years age, plasma calcium level is diagnosed below optimum level. Which organ is malfunctioning?
1. | Thyroid gland | 2. | Liver |
3. | Parathyroid | 4. | Posterior lobe of pituitary |
In mung bean, resistance to yellow mosaic, virus and powdery mildew were brought about by :
1. Mutation breeding
2. Biofortification
3. Tissue culture
4. Hybridization and selection
The body of the ovule is fused within the funicle at :
1. Micropyle
2. Nucellus
3. Chalaza
4. Hilum
The sequence that controls the copy number of the linked DNA in the vector, is termed :
1. Ori site
2. Palindromic sequence
3. Recognition site
4. Selectable marker
Select the correct option of haploid cells from the following groups :
(1) Primary oocyte, Secondary oocyte, Spermatid
(2) Secondary spermatocyte, First polar body, Ovum
(3) Spermatogonia, Primary spermatocyte, Spermatid
(4) Primary spermatocyte, Secondary spermatocyte, Second polar body
Cyclosporin A, used as an immuno suppression agent, is produced from
(1) Monascus purpureus
(2) Saccharomyces cerevisiae
(3) Penicillium notatum
(4) Trichoderma polysporum