A flat bone present on the ventral midline of thorax is called as:
1. | Hyoid | 2. | Clavicle |
3. | Sternum | 4. | Vertebral body |
Protonephridia are the excretory structures in all the following except:
1. Planaria | 2. Rotifers |
3. Amphioxus | 4. Prawns |
A person suffers punctures in his chest cavity in an accident, without any damage to the lungs. It’s effect could be:
1. A decreased respiratory rate
2. Absence of breathing on the affected side
3. Hyper inflation of the lung on affected side
4. An increase in the partial pressure of oxygen in deoxygenated blood
During ventricular contraction in a cardiac cycle:
1. | the AV valves close earlier than the opening of semi lunar vales |
2. | the AV valves close earlier than the closure of semi lunar vales |
3. | the AV valves close later than the opening of semi lunar vales |
4. | the closure of AV valves and opening of semi lunar valves occur simultaneously |
Visual reflexes are coordinated by the part of the human brain known as the:
1. cerebellum
2. superior colliculus
3. inferior colliculus
4. cerebral peduncles
In the ear, the utricle and the saccule are located in the:
1. cochlea | 2. semicircular canal |
3. spiral organ (organ of Corti) | 4. vestibule |
A major non-contraceptive advantage of male barrier contraceptives is that they prevent:
1. | Cancer breast | 2. | STI |
3. | Ectopic pregnancies | 4. | Menstrual irregularities |
During the follicular phase of the menstrual cycle, which of the following occur?
I: | The primary follicle grows and becomes a fully mature Graafian follicle. |
II: | The endometrium of the uterus regenerates through proliferation. |
1. | Only I | 2. | Only II |
3. | I and II | 4. | None |
The spermatids are transformed into spermatozoa by a process called:
1. | Spermiation | 2. | Spermatocytogenesis |
3. | Spermiogenesis | 4. | Spermatolysis |
The muscular activities of different parts ofthe alimentary canal can also be moderated by neural mechanisms that involve:
I. local mechanisms
II. through CNS
1. I only
2. II only
3. Both I and II
4. Neither I nor II
The actions of adrenaline will include all the following except:
1. Piloerection
2. Pupilary dilation
3. Glycogenesis
4. Positive ionotropic and chronotropic effect on heart
Consider the following functions:
I: | Replication of DNA along with the synthesis of nuclear proteins such as histones |
II: | Duplication of centriole |
III: | Synthesis of energy rich compounds and proteins |
Which of the above functions are carried out by a plant cell before it divides?
1. | I only | 2. | I, and II |
3. | I and III | 4. | I, II and III |
Most abundant organic compound on earth is
1. Cellulose
2. Protein
3. Lipids
4. Steroids
What is the most important feature that enabled reptiles, birds, and mammals to become highly successful on land when compared to amphibians?
1. | Respiration by lungs | 2. | Calcareous eggs |
3. | Amnion | 4. | Scaly skin |
Statins produced by the yeast Monascuspurpureus have been commercialized as:
1. | hormone replacement therapy for menopausal women. |
2. | increasing receptor sensitivity in type II diabetes mellitus. |
3. | a clotting factor for the treatment of Hemophilia A. |
4. | blood-cholesterol lowering agent. |
Identify the incorrect fact regarding the Neanderthal man:
1. Cranial capacity of around 1400 cc
2. Lived in East and Central Africa
3. Used hides to protect their bodies
4. Buried their dead
Generally, the fossils are found in:
1. Igneous rocks
2. Sedimentary rocks
3. Metamorphic rocks
4. Deeper rocks
A method used only for transforming animal cells is:
1. | Biolistics | 2. | Microinjection |
3. | Use of virus | 4. | Agrobacterium mediation |
In a DNA strand, two nucleotides are linked through a ___________ linkage to form a dinucleotide.
1. 3’ – 5’ phosphodiester bond
2. 5’ – 3’ phosphodiester bond
3. 1’ N-glycosidic bond
4. Two or three hydrogen bonds
Match biofortified crops in Column I with enriched nutrients in Column II and select the correct answer from the codes given:
|
Column I |
|
Column II |
A. |
Maize hybrids |
a. |
lysine and tryptophan |
B. |
Atlas 66 |
b. |
high protein content |
C. |
Golden rice |
c. |
Vitamin A |
Code
A | B | C | |
1. | a | b | c |
2. | a | c | b |
3. | b | a | c |
4. | c | a | b |
Identify the plant pollinated by insects that, in many species, emit a scent of decaying flesh from the inflorescence, in order to attract insects:
1. | Yucca | 2. | Amorphophallus |
3. | Zostera | 4. | Vallisneria |
Which of the following is not a function of spleen?
1. | It acts as a filter of the blood by trapping blood-borne microorganisms |
2. | It acts as a large reservoir of RBCs |
3. | It filters our old RBCs |
4. | It continues to form RBCs for a few years after birth |
Histones are:
1. | Positively charged and basic amino acids |
2. | Negatively charged and basic proteins |
3. | Positively charged and acidic proteins |
4. | Not found in bacteria |
What is the dihybrid test cross-ratio?
1. | 1 : 1 | 2. | 3 : 1 |
3. | 9 : 3 : 3 : 1 | 4. | 1 : 1 : 1: 1 |
The two alleles of a gene pair are located on:
1. | The same chromosome. |
2. | Different chromosomes. |
3. | Homologous sites on homologous chromosomes. |
4. | Homologous sites on heterologous chromosomes. |
In the embryos of a typical dicot and a grass, true homologous structures are:
1. | Coleorhiza and coleoptile | 2. | Coleoptile and scutellum |
3. | Cotyledons and scutellum | 4. | Hypocotyl and radical |
The first clinical gene therapy was done for the treatment of:
1. | AIDS |
2. | Cancer |
3. | Cystic fibrosis |
4. | SCID (Severe Combined Immuno Deficiency) resulting from deficiency of ADA |
The binomial system of nomenclature of living organisms was given by:
1. | Carl Woose | 2. | Copeland |
3. | Chatton | 4. | Carl Linnaeus |
The given diagram shows:
1. Female thallus of Marchantia
2. Male thallus of Marchantia
3. Female thallus of Funaria
4. Male thallus of Funaria
Which of the following is not true for fungi belonging to the class phycomycetes?
1. | Aseptate and coenocytic mycelium |
2. | Spores endogenously produced in sporangium |
3. | Asexual reproduction by nonmotile zoospores or motile aplanospores |
4. | Found in aquatic habitats, decaying wood or as obligate parasites on plants |
A symbiotic relation between fungi and the roots of higher plants is called as:
1. | Lichen | 2. | Mycorrhiza |
3. | Amensal | 4. | Proto-cooperation |
Which of the following is a feature of the anatomy of a monocot stem?
I. Collenchymatous hypodermis
II. Scattered vascular bundles
1. | Only I | 2. | Only II |
3. | Both I and II | 4. | Neither I nor II |
Scutellum is:
1. | shield shaped cotyledon in monocotyledons |
2. | protein layer in the outer endosperm in monocotyledons |
3. | starchy endosperm of dicotyledons |
4. | stony hard seed coat in some seeds |
In papilionaceous aestivation:
1. standard overlaps the wings that overlap the keel
2. standard overlaps the keel that overlaps the wings
3. wings overlap the standard that overlaps the keel
4. keel overlaps the wings that overlap the standard
Match the following with reference to Cockroach and choose the correct option
A. Phallomere | i. Chain of developing ova |
B. Gonopore | ii. Bundles of sperm |
C. Spermatophore | iii. Opening of the ejaculatory duct |
D. Ovarioles | iv. The external genitalia |
Options:
A | B | C | D | |
1. | iii | iv | ii | i |
2. | iv | iii | ii | i |
3. | iv | ii | iii | i |
4. | ii | iv | iii | i |
Which one of the following sets of animals belongs to a single taxonomic group?
1. Cuttlefish, Jellyfish, Silverfish, Dogfish, Starfish
2. Bat, Pigeon, Butterfly
3. Monkey, Chimpanzee, Man
4. Silkworm, Tapeworm, Earthworm
The phylum with exclusively marine animals is:
1. | Porifera | 2. | Cnidaria |
3. | Ctenophora | 4. | Platyhelminthes |
Which of the following statements is not true for plasma membrane?
1. It is present in both plant and animal cells
2. Lipid is present as a bilayer in it
3. Proteins are present, integrated as well as loosely associated, with the lipid bilayer
4. Carbohydrate is never found in it
Non-biodegradable pollutants are created by:
1. Nature
2. Excessive use of resources
3. Humans
4. Natural disasters
The normal greenhouse effect is necessary for survival of life on Earth as it has raised the temperature of Earth’s surface by:
1. | - 18°C | 2. | 15°C |
3. | 33°C | 4. | 50°C |
The most effective means of conservation is to:
1. remove predators
2. preserve habitats
3. vaccinate against diseases
4. census the species during the breeding season
What is common to Pantoeaagglomerans, Microbacteriumlaevaniformans and Pseudomonas putida?
1. They are phosphate solubilising bacteria
2. They are all denitrifiers
3. They are genetically modified to fix atmospheric nitrogen
4. They are source of antibiotics effective against MRSA
In an ecosystem, the rate of production of organic matter during photosynthesis is called as its:
1. | Gross Primary productivity |
2. | Net Primary productivity |
3. | Secondary productivity |
4. | Non productivity |
The fig tree is pollinated by a:
1. | Honeybee | 2. | Wasp |
3. | Bird | 4. | Moth |
What is the metabolic fate of pyruvate?
1. It is the end product of glycolytic pathway
2. It is reduced to acetyl CoA in the presence of oxygen
3. It depends on the cellular needs
4. It is decarboxylated in the cytosol
The electrons needed to replace those removed from PS I are provided by:
1. | The LHC | 2. | Water |
3. | NADPH | 4. | PS II |
The evolution of C4 photosynthetic system is probably one of the strategies for:
1. | maximizing the availability of oxygen in spite of continuing high amount of water loss |
2. | maximizing availability of water in spite of continuing high amount of carbon dioxide loss |
3. | reducing the amount of water loss but leads to decreased availability of carbon dioxide |
4. | maximizing the availability of carbon dioxide while minimizing water loss |
The net pressure gradient that causes the fluid to filter out of the glomeruli into capsule is
1. 20 mm Hg
2. 50 mm Hg
3. 75 mm Hg
4. 30 mm Hg
Which one of the following items gives its correct total number?
1. Cervical vertebrae in humans - 8
2. Floating ribs in humans - 4
3. Amino acids found in proteins - 16
4. Types of diabetes - 3
In a man, abducens nerve is injured. Which one of the following functions will be affected?
1. Swallowing
2. Movement of the eyeball
3. Movement of the neck
4. Movement of the tongue
The most active phagocytic white blood cells are
1. Neutrophils and monocytes
2. Neutrophils and eosinophils
3. Lymphocytes and macrophages
4. Eosinophils and lymphocytes
Which one of the following statements is correct?
1. Neurons regulate endocrine activity, but not vice versa.
2. Endocrine glands regulate neural activity, and nervous system regulates endocrine glands.
3. Neither hormones control neural activity nor do the neurons control endocrine activity.
4. Endocrine glands regulate neural activity, but not vice versa.
Bartholin’s glands are situated
1. On the sides of the head of some amphibians.
2. At the reduced tail end of birds.
3. On either side of vagina in humans.
4. On either side of vas deferens in humans.
According to Oparin, which one of the following was not present in the primitive atmosphere of the earth?
1. | Oxygen | 2. | Hydrogen |
3. | Water vapour | 4. | Methane |
Which of the following is required as inducer(s) for the expression of Lac operon?
1. lactose and galactose
2. glucose
3. galactose
4. lactose
In genetic code dictionary, codons used to code for all the 20 essential amino acids are
1. 20
2. 60
3. 61
4. 64
Which of the following are the important floral rewards for animal pollinators?
1. Nectar and pollen grains
2. Floral fragrance and calcium crystals
3. Protein pellicle and stigmatic exudates
4. Colour and large size of the flower
Unisexuality of flowers prevents
1. Getionogamy but not xenogamy
2. Autogamy and geitonogamy
3. Autogamy but not geitonogamy
4. Both getionogamy and xenogamy
A human female with Turner's syndrome:
1. has 45 chromosomes with XO
2. has one additional X chromosome.
3. exhibits male characters
4. is able to produce children with normal husband.
Phenotype of an organism is the result to
1. Mutations and linkages
2. Genotype and environment interactions
3. Cytoplasmic effects and nutrition
4. Environmental changes and sexual dimorphism.
Differentiation of shoot in tissue culture is controlled by
1. High auxin :cytokinin ratio
2. High cytokinin : auxin ratio
3. High gibberellin : auxin ratio
4. High gibberellin :cytokinin ratio
Identify the meiotic stage in which the homologous chromomes separate while the sister chromatids remain associated at their centromeres:
1. | Anaphase I | 2. | Anaphase II |
3. | Metaphase I | 4. | Metaphase II |
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?
1. Diplontic life cycle
2. Members of kingdom plantae
3. Mode of Nutrition
4. Multiplication by fragmentation
True nucleus is absent in :
1. Mucor
2. Vaucheria
3. Volvox
4. Anabaena
An aggregate fruit is one which developed from
1. Multicarpellary syncarpous gynoecium
2. Multicarpellary apocarpous gynoecium
3. Complete inflorescence
4. Multicarpellary superior ovary
A major characteristic of the monocot root is the presence of
1. Scattered vascular bundles
2. Vasculature without cambium
3. Cambium sandwiched between phloem and xylem along the radius
4. Open vascular bundles
In which one of the following preparations, you are likely to come across cell junctions frequently?
1. Ciliated epithelium
2. Thrombocytes
3. Tendon
4. Hyaline cartilage
Which one of the following living organisms completely lacks a cell wall?
1. Cyanobacteria
2. Sea- fan (Gorgonia)
3. Saccharomyces
4. Green algae
Identify the correct order of organisation of genetic material from largest to smallest:
1. Genome, chromosome, nucleotide, gene
2. Genome, chromosome, gene, nucleotide
3. Chromosome, genome, nucleotide, gene
4. Chromosome, gene, genome, nucleotide
Which of the following biomolecules does have phosphodiester bond ?
1. Monosaccharides in a polysaccharide
2. Amino acids in a polypeptide
3. Nucleotides in a Nucleic acid
4. Fatty acids in a diglyceride
The zone of atmosphere in which the ozone layer is found
1. Ionosphere
2. Mesosphere
3. Stratosphere
4. Troposphere
A sedentary sea anemone gets attached to the sheel lining of hermit crab. The association is
1. ectoparasitism
2. symbiosis.
3. commensalism.
4. amensalism.
Certain characteristic demographic features of developing countries are.
1. High fertility, high density, rapidly rising mortality rate and a very young age distribution.
2. High infant mortality, low fertility, uneven population growth and a very young age distribution.
3. High mortality, high density, uneven population growth and a very old age distribution.
4. High fertility, low or rapidly falling mortality rate, rapid population growth and a very young age distribution.
During seed germination, its stored food is mobilised by:
1. | ethylene | 2. | cytokinin |
3. | ABA | 4. | gibberellin |
The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products.
Arrows numbered 4, 8, 12 can all be
1. | NADH | 2. | ATP |
3. | H2O | 4. | FAD+ or FADH2 |
In the leaves of -plants, malic acid synthesis during fixation occurs in
1. epidermal cells
2. mesophyll cells
3. bundle sheath
4. guard cells
During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by
1. leghaemoglobin
2. xanthophyll
3. carotene
4. cytochrome
The permissible use of the technique amniocentesis is for
1. detecting sex of the unborn foetus
2. artificial insemination
3. transfer of embryo into the uterus of a surrogate mother
4. detecting any genetic abnormality
Which of the following criteria does not pertain to facilitated transport?
1. Requirement of special membrane proteins
2. High selectivity
3. Transport saturation
4. Uphill transport
Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column II.
Column I | Column II | |
1. | Glycines and Glucose | Small intestine and active absorption |
2. | Fructose and Na+ | Small intestine and passive absorption |
3. | Glycerol and Fatty acids | Duodenum and move as chylomicrons |
4. | Cholesterol and Maltose | Large intestine and active absorption |
What is true about RBCs in humans?
1. | They carry about 20-25 percent of |
2. | They transport 99.5 percent of |
3. | They transport about 80 percent oxygen only and the rest 20 percent of it is transported in a dissolved state in blood plasma |
4. | They do not carry at all |
A temporary endocrine gland in the human body is?
1. pineal gland | 2. corpus cardiacum |
3. corpus luteum | 4. corpus allatum |
Following statements describe the characteristics of the enzyme Restriction Endonuclease. Identify the incorrect statement
1. The enzyme recognizes a specific palindromic nucleotide sequence in the DNA
2. The enzyme cuts DNA molecules at identified position within the DNA
3. The enzyme binds DNA at specific sites and cuts only one of the two strands
4. The enzyme cuts the sugar-phosphate backbone at specific sites on each strand
Meiotic division of the secondary oocyte is completed:
(1) At the time of copulation
(2) After zygote formation
(3) At the time of fusion of a sperm with an ovum
(4) Prior to ovulation
Match the following microorganism with product
Column -I | Column- II |
(a) Clostridium butylicum | (i) Cyclosporin A |
(b) Trichoderma polysporunt | (ii) Butyric acid |
(c) Monascus purpureus | (iii) Citric acid |
(d) Aspergillus niger | (iv) Blood cholesterol lowering agent |
(a) | (b) | (c) | (d) | |
(1) | (ii) | (i) | (iv) | (iii) |
(2) | (i) | (ii) | (iv) | (iii) |
(3) | (iv) | (iii) | (ii) | (i) |
(4) | (iii) | (iv) | (ii) | (i) |
Match the following columns and select the correct option :
Column - I Column - II
(i) Typhoid (a) Haemophilus influenzae
(ii) Malaria (b) Wuchereria bancrofti
(iii) Pneumonia (c) Plasmodium vivax
(iv) Filariasis (d) Salmonella typhi
(1) (i)-(d), (ii)-(c), (iii)-(a), (iv)-(b)
(2) (i)-(c), (ii)-(d), (iii)-(b), (iv)-(a)
(3) (i)-(a), (ii)-(c), (iii)-(b), (iv)-(d)
(4) (i)-(a), (ii)-(b), (iii)-(d), (iv)-(c)
The laws and rules to prevent unauthorized exploitation of bio-resources are termed as -
(1) Biopatenting
(2) Bioethics
(3) Bioengineering
(4) Biopiracy
Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants
(1) Vehicular exhaust
(2) Allergy causing pollen
(3) Noise
(4) Particulates of size 2.5 micrometer or below
According to Alexander von Humboldt :
(1) Species richness decreases with increasing area of exploration
(2) Species richness increases with the increasing area, but only up to limit
(3) There is no relationship between species richness and area explored.
(4) Species richness goes on increasing with increasing area of exploration
The rate of decomposition is faster in the ecosystem due to the following factors EXCEPT:-
1. | Detritus rich in sugars |
2. | Warm and moist environment |
3. | Presence of aerobic soil microbes |
4. | Detritus richer in lignin and chitin |