In the taxonomic hierarchy, the organisms belonging to the same Order must belong to the same:
1. Class
2. Family
3. Genus
4. Species
Match each item in Column I [Protist] with one in Column II [Characteristic] and select the correct option:
Protist | Characteristic |
A. Chrysophytes | P. Plasmodium |
B. Dinoflagellates | Q. Chief producers in the ocean |
C. Euglenoids | R. Stiff cellulose plates in cell wall on outer surface |
D. Slime moulds | S. Two flagella, one long and one short |
A | B | C | D | |
1. | R | Q | S | P |
2. | Q | S | P | R |
3. | Q | R | S | P |
4. | R | S | Q | P |
Identify the correctly matched row:
Class |
Mycelium |
Spores |
|
I. |
Phycomycetes |
Aseptate and coenocytic |
Exogenous on sporangium |
II. |
Ascomycetes |
Branched and septate |
Endogenously in asci |
III. |
Basidiomycetes |
Branched and septate |
Exogenously on basidium |
1. Only I
2. Only II
3. Only III
4. Both II and III
All the following statements are incorrect regarding Polysiphonia and Porphyra except:
1. Food stored is very similar to amylopectin and glycogen
2. Sexual reproduction is isogamous, anisogamous or oogamous
3. Found mainly in fresh shallow waters
4. 2, unequal flagella inserted laterally
In Cycas:
1. Stems are branched
2. Coralloid roots have symbiotic mycorrhizal association
3. Male cones and megasporophylls are borne on different trees
4. Female gametophyte has an independent free living existence
The fertilization and development is:
1. internal and indirect in Ctenophora
2. internal and indirect in Porifera
3. external and direct in Aschelminthes
4. external and direct in Echinodermata
How many of the animals given in the box below are triploblastic, have a true coelom but lack segmentation?
Antedon, Laccifer, Limulus, Aplysia, Dentalium, Ancylostoma, Hirudinaria, Sepia, Ophiura, Nereis |
1. 4
2. 5
3. 6
4. 7
The feature lacking in bony fishes would be:
1. | Operculum | 2. | Swim bladder |
3. | Ammonotelism | 4. | Placoid scales |
China rose does not have:
1. Alternate phyllotaxy
2. Superior ovary
3. Imbricate aestivation
4. Monoadelphous stamen
When the ovules are borne on central axis and septa are absent, the type pf placentation is called as:
1. free central and found in Dianthus and Primrose
2. basal and found in Dianthus and Primrose
3. free central and found in sunflower and marigold
4. basal and found in sunflower and marigold
Endospermic seeds are seen in:
1. | Bean | 2. | Gram |
3. | Pea | 4. | Castor |
How many of the following plants have axile placentation?
China rose, Petunia, Trifolium, Colchicum, Tomato, Indigofera, Lemon, Tobacco, Gloriosa, Lupin, Aloe |
1. 4
2. 5
3. 6
4. 8
All the following will be responsible for producing secondary tissues in plants except:
1. Intercalary meristem
2. Fascicular vascular cambium
3. Interfascicular cambium
4. Cork cambium
Identify the incorrect statement:
1. | Gymnosperms lack vessels in their xylem |
2. | In stem, arrangement of xylem is exarch and it is endarch in root |
3. | Gymnosperms lack sieve tubes and companion cells in their phloem |
4. | Bast fibres are genrally absent in the primary phloem |
Match each item in Column I with one in Column II and select the correct answer from the codes given:
Tissue | Location | ||
A | Cuboidal brush bordered epithelium | P | Proximal convoluted tubule of the nephron |
B | Ciliated columnar epithelium | Q | Fallopian tubes |
C | Dense regular connective tissue | R | Tendon |
D | Dense irregular connective tissue | S | Skin |
Codes:
A | B | C | D | |
1. | P | Q | R | S |
2. | Q | P | S | R |
3. | Q | P | R | S |
4. | P | Q | S | R |
Identify the incorrect morphological feature of Periplaneta americana:
1. Tergites are dorsal sclerites and sternites are ventral sclerites
2. Labrum is the lower lip and labium is the upper lip
3. Tegmina are mesothoracic wings
4. Anal cerci are present in both sexes
Which of the following organelles is not correctly matched with its feature?
Organelle | Feature | |
1. | Smooth endoplasmic reticulum | Synthesis of steroidal hormones in animals |
2. | Golgi apparatus | Formation of glycoproteins and glycolipids |
3. | Lysosomes | Rich in alkaline hydrolases |
4. | Elaioplasts | Store oils and fats |
In a prokaryotic cell:
1. an extrachromosomal circular plastid replicates autonomously
2. mesosomes have pigments in photosynthetic bacterial cells
3. polyribosomes are not found
4. reserve materials are stored in inclusion bodies
In the given diagram of centriole something is wrong! What is it?
1. Radial spokes: all must attach to the central sheath
2. Central sheath: must be continuous
3. Interdoublet bridge: should not be present
4. Everything: it is not centriole
Regarding lipids:
1. Arachidonic acid has 20 carbon atoms excluding the carboxyl carbon
2. Trihydroxy propane is a component of triglycerides
3. Oils have a higher melting point than fats
4. They are polymers but not macromolecules
Consider the following statements regarding co-factors required by enzymes:
I. Haem is the prosthetic group in catalase and peroxidase
II. Coenzyme NAD and NADP contain the vitamin niacin
III. Magnesium is a cofactor for carboxypeptidase
The correct statements include
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Which of the following stages of Meiosis I of Prophase I is not correctly matched with events occurring during that stage?
|
Stage |
Event |
1. |
Zygotene |
Pairing between homologous chromosomes |
2. |
Pachytene |
Crossing over between sister chromatids of homologous chromosomes |
3. |
Diplotene |
Tendency of recombined homologues to separate |
4. |
Diakinesis |
Terminalization of chiasmata |
Control points where a plant adjusts the quantity and types of solutes that reach the xylem are:
1. Root hairs in the zone of maturation
2. Transport proteins of endodermal cells
3. Suberized Casparian strips in the wall of endodermal cells
4. Living parenchymal cells of the xylem
Pollen germination and carbohydrate translocation in plants is the function of:
1. Boron
2. Zinc
3. Chlorine
4. Molybdenum
During chemiosmosis in the chloroplast:
1. Splitting of water molecule takes place on the outer side of the thylakoid membrane
2. As electrons move through the photosystems protons are transported from the thylakoid lumen to the stroma
3. The NADP reductase enzyme is located on the stroma side of the thylakoid membrane
4. The portion of the ATP synthase forms a transmembrane channel in the thylakoid membrane
Which of the following is not a function of auxins in plants?
1. Promotion of flowering in pineapples
2. Induction of parthenocarpy in tomatoes.
3. Apical dominance
4. Promotion of female flowers in cucumber
The glands in the gastric mucosa in the human alimentary canal secrete all of the following except:
1. Protease
2. Cyanocobalamin
3. Lipase
4. Mucus
Which of the following is correctly matched?
1. | Gross calorific value of proteins | 5.65 kcal/g |
2. | Physiologic calorific value of fats | 9.45 kcal/g |
3. | Kwashiorkor | Simultaneous deficiency of proteins and calories |
4. | Marasmus | Extensive edema and swelling |
The maximum amount of air that a person can breathe out after a forced inspiration, under normal physiological conditions, would be about:
1. | 1600 ml | 2. | 2300 ml |
3. | 4500 ml | 4. | 5600 ml |
A person can receive blood only from a donor of his/her blood group if the blood group of this person is:
1. O
2. AB
3. A or B
4. A, B, AB or O
Which of the following types of synovial joints is not correctly matched with its location in the human body?
|
Type of joint |
Example |
1. |
Saddle |
Between metacarpals of the thumb |
2. |
Gliding |
Between carpal bones |
3. |
Pivot |
Between atlas and axis |
4. |
Hinge |
Knee joint |
Both nose and tongue:
1. have bipolar neurons
2. detect dissolved chemicals
3. send afferent neurons to same part of the cerebrum
4. are innervated only by sympathetic neurons
Which of the following hormones does not act on its target cells through a second messenger?
1. Adrenocorticotropin
2. Thyrocalcitonin
3. Follicle stimulating hormone
4. triiodothyronine
Identify the correctly matched pair:
1. |
Asexual reproductive structure in Chlamydomonas |
Zygospores |
2. |
Vegetative propagule in Agave |
Offset |
3. |
Chromosome number in meiocyte of Ophioglossum |
630 |
4. |
Marchantia |
Dioecious plant |
The layers in the walls of the microsporangium that helps in the dehiscence of anther to release the pollen include:
I. | Epidermis |
II. | Endothecium |
III. | Middle layers |
IV. | Tapetum |
1. | I and II only | 2. | I, II, and III only |
3. | II and III only | 4. | I, II, III, and IV |
How many nuclei in embryosac of an angiosperm are surrounded by cell walls?
1. | 3 | 2. | 6 |
3. | 7 | 4. | 8 |
In the hormonal regulation of the male reproductive system:
1. | Spermatogenesis starts due to a significant decrease in the secretion of GnRH |
2. | LH acts on Sertoli cells and stimulates the secretion of some factors required for effective spermiogenesis |
3. | FSH acts on Leydig cells and stimulates the synthesis and secretion of androgens |
4. | Androgens stimulate the process of spermatogenesis |
During a menstrual cycle, which of the following hormones reaches its maximum peak secretion level during the luteal phase of the cycle?
1. | FSH | 2. | LH |
3. | Estrogen | 4. | Progesterone |
Both Intra-Uterine Contraceptive Devices and the Combination Pill can:
1. Prevent ovulation
2. Provide protection against STI
3. Prevent implantation
4. Act as spermicidal agents
Match each item in Column I with one in Column II and select the correct answer from the codes given:
A |
Codominance |
P |
Progeny resembles both parents |
B |
Incomplete dominance |
Q |
Progeny does not resemble either of the parents |
C |
Sex determination in Drosophila |
R |
Haplo-diploidy |
D |
Sex determination in Honey bee |
S |
Genic balance |
Codes :
A | B | C | D | |
1. | P | Q | R | S |
2. | P | Q | S | R |
3. | Q | P | R | S |
4. | Q | P | S | R |
Regarding Mendelian disorders :
1. | Color blindness is more common in the females of the species. |
2. | Sickle cell anemia occurs due to the substitution of valine by glutamic acid in the globin chain of haemoglobin. |
3. | Individuals affected by phenylketonuria lack an enzyme that converts tyrosine to phenylalanine. |
4. | Thalassemia is inherited as an autosomal recessive trait. |
Given below in Column I are the criteria for a molecule that can act as a genetic material and the corresponding inferences drawn are given in Column II. Identify the criteria that is not correctly matched to the inference drawn:
|
Criteria |
Inference drawn |
1. |
It should be able to replicate |
Protein cannot be the genetic material |
2. |
It should be stable structurally and chemically |
DNA is a better genetic material than RNA |
3. |
It should provide the scope for slow changes |
RNA evolves faster than DNA |
4. |
It should be able to express in the form of Mendelian characters |
The protein synthesizing machinery has evolved around DNA |
Normally the process of DNA fingerprinting does not involve:
1. | Southern blot | 2. | Elution |
3. | Radiolabelled VNTR probes | 4. | Autoradiography |
All the following are examples of analogous organs except:
1. | Thorn and tendrils of Bougainvillea and Cucurbita |
2. | Sweet potato and Potato |
3. | Flippers of Penguins and Dolphins |
4. | Eye of the Octopus and of Mammals |
Identify the correct statement amongst the following:
1. | Monocots evolved later than dicots. |
2. | Mammals evolved from extinct reptiles called thecodonts. |
3. | Dryopithecus was more man-like while Ramapithecus was more ape-like. |
4. | Homo erectus had a cranial capacity of about 800 cc and probably ate meat. |
All the following diseases of mankind are vector-borne except:
1. | Dengue | 2. | Chikungunya |
3. | Ascariasis | 4. | Filariasis |
Match the drugs in Column I with their correct attributes given in Column II and select the correct answer from the codes given:
|
Drug |
|
Attribute |
A |
Opioids |
P |
Hallucinogenic at high doses |
B |
Cannabinoids |
Q |
Highly effective painkiller |
C |
Cocaine |
R |
Can cause cardiovascular side effects |
D |
Nicotine |
S |
Stimulates adrenal medulla |
Codes:
A | B | C | D | |
1. | Q | R | S | P |
2. | R | Q | P | S |
3. | Q | R | P | S |
4. | R | Q | S | P |
How many of the given statements are correct?
I. | Inbreeding depression can be overcome by a single cross-breed |
II. | Out-crossing is the best method for animals that are below average in productivity in milk production |
III. | Controlled breeding experiments are carried out using artificial insemination |
IV. | Mule has been produced by cross-breeding between a female horse and a male donkey |
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |
Identify the incorrectly matched row:
|
Crop |
Variety |
Resistant to |
1. |
Karan rai |
Brassica |
White rust |
2. |
Pusa sawani |
Okra |
Shoot and fruit borer |
3. |
Himgiri |
Wheat |
Leaf and stripe rust |
4. |
Pusa sadabahar |
Cowpea |
Bacterial blight |
Consider the given two statements:
I. | The use of biocontrol measures eliminates the use of chemical pesticides by an organic farmer. |
II. | In organic farming, the pests are completely eliminated by biocontrol. |
Of the two statements:
1. Both I and II are correct
2. Only I is correct
3. Only II is correct
4. Both I and II are incorrect
In a typical sewage treatment plant:
1. | The primary treatment of waste treatment uses microbes |
2. | The BOD of waste water is enhanced during purification |
3. | Activated sludge is pumped into anaerobic digesters |
4. | Biogas, consisting of methane and ammonia, may be produced as an additional benefit |
What is true for the plasmids used as cloning vectors in recombinant procedures?
1. | Ori is responsible for controlling the copy number of linked DNA |
2. | The bacteria lacking R plasmids are resistant to antibiotics |
3. | The vector must have many sites for the same restriction enzyme |
4. | They can carry largest inserts amongst the available cloning vectors |
Corn borer in cotton can be controlled by the proteins encoded by the gene:
1. cryIAc
2. cryIIAb
3. cryIAb
4. cryIIAc
At present transgenic animals cannot be used for:
1. | Harvesting biological products |
2. | Testing vaccine safety |
3. | Study of human diseases |
4. | Xenotransplantation |
Identify the biome that is not correctly matched with its mean annual temperature and mean annual precipitation:
|
Biome |
Mean annual temperature [0C] |
Mean annual precipitation [cm] |
1. |
Desert |
0 – 25 |
25 – 100 |
2. |
Temperate Forest |
10 – 22 |
50 – 220 |
3. |
Tropical forest |
20 – 25 |
150 – 425 |
4. |
Coniferous forest |
0 – 15 |
50 – 250 |
The relationship between cattle egret and grazing cattle can be best described as:
1. | Mutualism | 2. | Commensalism |
3. | Parasitism | 4. | Competition |
Which of the following will lead to decreased rate of decomposition of detritus?
1. | Anaerobiosis | 2. | High temperature |
3. | Moist environment | 4. | High nitrogen content in detritus |
The correct sequence in primary hydrarch succession in early seral stages would be:
1. | Submerged plant – Submerged free-floating plant – Reed swamp – Marsh meadow |
2. | Submerged free-floating plant – Submerged plant – Reed swamp – Marsh meadow |
3. | Submerged plant – Submerged free-floating plant – Marsh meadow – Reed swamp |
4. | Submerged free-floating plant – Reed swamp – Submerged plant – Marsh meadow |
The now extinct thylacine was a native of:
1. | Mauritius | 2. | Africa |
3. | Australia | 4. | Russia |
Which of the following is not an ex-situ method for biodiversity conservation?
1. Botanical gardens
2. Seed banks
3. Cryopreservation
4. Biosphere reserves
Match the legislation in Column I with the corresponding year in Column II and select the correct answer from the codes given:
|
Legislation |
|
Year |
A |
Air [Prevention and Control of Pollution] Act |
P |
1974 |
B |
Environment [Protection] Act |
Q |
1981 |
C |
Water [Prevention and Control of Pollution] Act |
R |
1986 |
D |
National Forest Policy |
S |
1988 |
Codes
Options: | (a) | (b) | (c) | (d) |
1. | R | Q | S | P |
2. | Q | R | P | S |
3. | Q | R | S | P |
4. | R | Q | P | - S |
Ozone hole develops over Antarctica each year between:
1. Early January and late April
2. Early March and late July
3. Late August and early October
4. Late September and early December
Based on your knowledge regarding viruses, viroids, bacteria and archaea, can you say which of the following will definitely NOT be true?
1. The viroid RNA contains no protein encoding genes
2. There are no known pathogens in domain Archaea
3. Most plant pathogenic bacteria are gram negative
4. Like animal viruses, plant viruses also enter the cell through receptor mediated endocytosis
Which of the following cell type of vascular tissue system of plants is not correctly matched with its function?
Cell type | Function | |
1. | Tracheid | Chief water conduction element in gymnosperms |
2. | Vessel element | Chief water conduction element in angiosperms |
3. | Sieve cell | Food conduction element in angiosperms |
4. | Albuminous cell | Delivery of substances to sieve cells |
Which of the following statements regarding photosynthesis in plants is NOT true?
1. plants need 5 ATP molecules to fix one molecule of
2. Rubisco uses while PEP carboxylase uses as its substrate
3. Amongst , and CAM plants, for every gram of gained, the least water is lost by a plant
4. CAM plants grow slowly and compete poorly with and species under conditions other than extreme aridity
The steps of the cardiac cycle in sequence are:
1. isovolumic contraction, ejection, isovolumic relaxation, passive ventricular filling, active ventricular filling.
2. isovolumic relaxation, isovolumic contraction, ejection, passive ventricular filling, active ventricular filling.
3. isovolumic contraction, isovolumic relaxation, ejection, passive ventricular filling, active ventricular filling.
4. isovolumic contraction, ejection, isovolumic relaxation, active ventricular filling, passive ventricular filling.
The amount of urine produced is generally increased when there is:
1. increased ADH secretion
2. increased atrial natriuretic hormone secretion
3. increased aldosterone secretion
4. sympathetic stimulation of the renal arteries
Given these events:
I. active sites on actin myofilament are exposed
II. actin myofilament slides over myosin myofilament
III. ion binds to troponin
IV. myosin heads move
V. cross bridges form
Choose the arrangement that lists the correct order in which they occur during a single simulation of a skeletal muscle.
1. IV, III, II, I, V
2. III, I, V, IV, II
3. III, II, V, IV, I
4. II, IV, III, V, I
Control of several homeostatic functions including breathing, heart and blood vessel activity is largely the function of:
1. The cerebrum
2. The cerebellum
3. The diencephalon
4. The brain stem
Identify the incorrect statement regarding the development of the embryo in a typical angiosperm:
1. At the two-cell stage, the polarity is established with the basal cells producing most of the mature embryo and the apical cell forming the suspensor.
2. The development stages of early embryo sequentially are – globular form – heart-shaped – torpedo stage.
3. During its short life, the suspensor supports early development of the embryo proper.
4. Plumule is the embryonic shoot and radical is the embryonic root.
The first hormone ever produced by you in your life would be:
1. | Androgen-like testosterone |
2. | Progesterone which is a precursor of both estrogen and testosterone |
3. | Testes determining factor |
4. | Human chorionic gonadotropin |
The inheritance of colour in wheat Kernel shown below is explained by:
1. | Polygenic inheritance | 2. | Pleiotropy |
3. | Epistatic interaction | 4. | Multiple allelism |
The type of resistance that is acquired as a result of developing and recovering from a disease is:
1. naturally acquired active immunity
2. artificially acquired active immunity
3. artificially acquired passive immunity
4. naturally acquired passive immunity
You are inserting your gene of interest into the Lac Z gene in a plasmid also containing a tetracycline-resistant gene. You plate your transformed bacteria on media containing tetracycline and X-gal. Which of the following results would indicate a clone with recombinant plasmids?
1. | A clone which did not grow on the tetracycline plates |
2. | A white colony on the tetracycline plates |
3. | A blue colony on the tetracycline plates |
4. | A red colony on the tetracycline plates |
Match plants in Column I with their Ecological adaptations in Column II and select the correct answer from the codes given:
|
Plants |
|
Ecological adaptation |
A. |
Mangroves |
P. |
High-temperature optima for photosynthesis |
B. |
Heliophytes |
Q. |
Deep root systems |
C. |
Water hyacinth |
R. |
Viviparity |
D. |
Prosopis |
S. |
Inflated petiole |
Codes:
A | B | C | D | |
1. | R | P | S | Q |
2. | S | P | R | Q |
3. | R | P | Q | S |
4. | P | Q | R | S |
Which of the following ecosystem characteristics that changes during succession is not correctly matched?
|
Characteristics |
Seral stages |
Climax |
1. |
Size of individuals |
Small |
Large |
2. |
Ecological niches |
Few, generalized |
Many, specialized |
3. |
Food chains and webs |
Simple |
Complex |
4. |
Efficiency of energy use |
High |
Low |
Photochemical smog does not contain:
1. | O3 | 2. | PAN |
3. | NOx | 4. | CO2 |
What can be said about the shape of the membrane that surrounds an oil droplets as seen in cells of plant seeds?
1. It would be a phospholipid bilayer as in other cell membranes but would lack sterols
2. It would be a phospholipid bilayer with hydrophobic ends on the outside and hydrophilic ends on the inside
3. It would most likely be a single layered membrane
4. No membrane can surround an oil droplet
When a cell in the M phase is fused with a cell in the phase:
1. The nucleus immediately enters the S phase and replicates DNA
2. The cell in the M phase undergoes aopotosis or programmed cell death
3. The nucleus immediately begins mitosis
4. The two nuclei fuse to produce a polyploidy nucleus and undergo meiosis
Discarding the theoretical yields of aerobic cellular respiration, we now know that 1 NADH results in __ being transported across the inner mitochondrial membrane and the number of that must re-enter the nitochondrial matrix via ATP synthase to generate 1 ATP is __.
1. 12, 4
2. 10, 4
3. 9, 3
4. 6, 2
What adaptation would be seen in the kidneys of a mammal living in desert when compared to the kidneys in aquatic mammals?
1. | A higher percentage of cortical nephrons with short loop of Henle extending slightly into the medulla |
2. | A higher percentage of cortical nephrons with long loop of Henle extending deep into the medulla |
3. | A higher percentage of juxtamedullary nephrons with long loop of Henle extending deep into the medulla |
4. | Presence of only juxtamedullary nephrons with long loop of Henle extending deep into the medulla |
Identify the incorrectly matched effects of sympathetic and parasympathetic stimulation on different organs in the human body:
|
ORGAN |
SYMPATHETIC STIMULATION |
PARASYMPATHETIC STIMULATION |
1. |
Heart |
Positive chronotropic, negative ionotropic |
Negative chronotropic, positive ionotropic |
2. |
GIT |
Decreased peristalsis and secretions |
increased peristalsis and secretion |
3. |
EYE |
Pupil dilation and decreased refractory power of lens |
Pupil constriction and increased refractory power of lens |
4. |
Urinary system |
Retention of urine |
Voiding of urine |
The hormone that is antagonist to insulin in all of its metabolic function would be:
1. Glucagon
2. Cortisol
3. Adrenaline
4. Growth hormone
The cleavage divisions in the human embryo may be best described as:
1. | Holoblastic, Equal, Indeterminate, Radial |
2. | Holoblastic, Unequal, Indeterminate, Radial |
3. | Holoblastic, Equal, Indeterminate, Spiral |
4. | Meroblastic, Equal, Indeterminate, Spiral |
What causes shortening of telomeres during cell division?
1. DNA synthesis
2. Exonuclease removal of primers
3. Ligation of DNA fragments
4. Telomerase activity
The smallest units of natural selection and evolution respectively are:
1. | Population, Species | 2. | Individual, Species |
3. | Family, Population | 4. | Individual, Population |
The HIV protein that is involved in attachment of the virus to host cells is:
1. reverse transcriptase.
2. gp120.
3. CD4.
4. CCR-5.
Which of a women's grandparents could not be the source of any of the genes on either of her X-chromosomes?
1. | Mother's Father. | 2. | Father's Mother. |
3. | Mother's Mother. | 4. | Father's Father. |
Which of the following is a human recombinant product that has not replaced products harvested from animal or human sources?
1. | Humulin | 2. | Erythropoietin |
3. | FSH | 4. | r HGH [growth hormone] |
COP 25 will be organized by:
1. Chile
2. Brazil
3. Poland
4. Germany