NTA - NEET 2019 Exam Paper (Odisha)Contact Number: 9667591930 / 8527521718NTA - NEET 2019 Exam Paper (Odisha)Contact Number: 9667591930 / 8527521718The contrasting characteristics generally in a pair used for identification of animals in Taxonomic Key are referred to as :
| 1. | Lead | 2. | Couplet |
| 3. | Doublet | 4. | Alternate |
Which of the following is against the rules of ICBN?
1. Hand written scientific names should be underlined.
2. Every species should have a generic name and a specific epithet.
3. Scientific names are in Latin and should be italized.
4. Generic and specific names should be written starting with small letters.
Which of the following statements is correct?
1. Lichens do not grow in polluted areas.
2. Algal component of lichens is called mycobiont.
3. Fungal component of lichens is called phycobiont.
4. Lichens are not good pollution indicators.
Match the organisms in column I with habitats in column II.
| Column I | Column II | ||
| (a) | Halophiles | (i) | Hot springs |
| (b) | Thermoacidophiles | (ii) | Aquatic environment |
| (c) | Methanogens | (iii) | Guts of ruminants |
| (d) | Cyanobacteria | (iv) | Salty areas |
Select the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (iii) | (ii) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (iii) | (iv) | (i) | (ii) |
| 4. | (ii) | (iv) | (iii) | (i) |
Which is the most common type of embryo sac in angiosperms?
1. Tetrasporic with one mitotic stage of divisions
2. Monosporic with three sequential mitotic divisions
3. Monosporic with two sequential mitotic divisions
4. Bisporic with two sequential mitotic divisions
Match the following genera with their respective phylum :
(a) Ophiura (i) Mollusca
(b) Physalia (ii) Platyhelminthes
(c) Pinctada (iii) Echinodermata
(d) Planaria (iv) Coelenterata
Select the correct option :
1. (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
2. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
3. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
4. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
Which of the following animals are true coelomates with bilateral symmetry ?
1. Adult Echinoderms
2. Aschelminthes
3. Platyhelminthes
4. Annelids
Regeneration of damaged growing grass following grazing is largely due to :
1. Lateral meristem
2. Apical meristem
3. Intercalary meristem
4. Secondary meristem
Bicarpellary ovary with obliquely placed septum is seen in :
1. Brassica
2. Aloe
3. Solanum
4. Sesbania
Match the placental types (column-I) with their examples (column-II)
Column I Column II
(a) Basal (i) Mustard
(b) Axile (ii) China rose
(c) Parietal (iii) Dianthus
(d) Free central (iv) Sunflower
Choose the correct answer from the following options:
1. (a)-(ii), (b)-(iii),(c)-(iv), (d)-(i)
2. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
3. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
4. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
In the dicot root, the vascular cambium originates from :
1. Tissue located below the phloem bundles, a portion of pericycle tissue, above the protoxylem
2. Cortical region
3. Parenchyma between endodermis and pericycle
4. Intrafascicular and interfascicular tissue in a ring
Which of the following shows whorled phyllotaxy ?
1. Mustard
2. China rose
3. Alstonia
4. Calotropis
Match the following cell structure with its characteristic feature :
| (a) | Tight junctions | (i) | Cement neighbouring cells together to form sheet |
| (b) | Adhering junctions | (ii) | Transmit information through chemical to another cells |
| (c) | Gap junctions | (iii) | Establish a barrier to prevent leakage of fluid across epithelial cells |
| (d) | Synaptic junctions | (iv) | Cytoplasmic channels to facilitate communication between adjacent cells |
Select correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iv) | (i) | (iii) |
| 2. | (iv) | (ii) | (i) | (iii) |
| 3. | (iii) | (i) | (iv) | (ii) |
| 4. | (iv) | (iii) | (i) | (ii) |
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 |
Which of the following cell organelles is present in the highest number in secretory cells?
| 1. | Mitochondria | 2. | Golgi complex |
| 3. | Endoplasmic reticulum | 4. | Lysosomes |
Non-membranous nucleoplasmic structures in nucleus are the site for active synthesis of
1. protein synthesis
2. mRNA
3. rRNA
4. tRNA
Which of the following nucleic acids is present in an organism having 70 S ribosomes only?
1. Single stranded DNA with protein coat
2. Double stranded circular naked DNA
3. Double stranded DNA enclosed in nuclear membrane
4. Double stranded circular DNA with histone proteins
Match the Column I with Column II.
| Column I | Column II | ||
| (a) | Golgi apparatus | (i) | Synthesis of protein |
| (b) | Lysosomes | (ii) | Trap waste and excretory products |
| (c) | Vacuoles | (iii) | Formation of glycoproteins and glycolipids |
| (d) | Ribosomes | (iv) | Digesting biomolecules |
Choose the right match from options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (iv) | (ii) | (i) |
| 2. | (iv) | (iii) | (i) | (ii) |
| 3. | (iii) | (ii) | (iv) | (i) |
| 4. | (i) | (ii) | (iv) | (iii) |
Which of the following organic compounds is the main constituent of Lecithin?
| 1. | Arachidonic acid | 2. | Phospholipid |
| 3. | Cholesterol | 4. | Phosphoprotein |
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.
"Ramachandran plot" is used to confirm the structure of
| 1. | RNA | 2. | Proteins |
| 3. | Triacylglycerides | 4. | DNA |
After meiosis I, the resultant daughter cells have
1. same amount of DNA as in the parent cell in S
2. twice the amount of DNA in comparison to haploid gamete
3. same amount of DNA in comparison to haploid gamete
4. four times the amount of DNA in comparison to haploid gamete
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. |
The main difference between active and passive transport across cell membrane is:
| 1. | passive transport is non-selective whereas active transport is selective. |
| 2. | passive transport requires a concentration gradient across a biological membrane whereas active transport requires energy to move solutes. |
| 3. | passive transport is confined to anionic carrier proteins whereas active transport is confined to cationic channel. |
| 4. | active transport occurs more rapidly than passive. |
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
What will be the direction of flow of water when a plant cell is placed in a hypotonic solution?
1. Water will flow in both directions.
2. Water will flow out of the cell.
3. Water will flow into the cell.
4. No flow of water will happen in any direction.
Which of the following bacteria reduces nitrate in soil into nitrogen?
1. Nitrobacter
2. Thiobacillus
3. Nitrococcus
4. Nitrosomonas
In Hatch and Slack pathway, the primary CO2 acceptor is -
| 1. | Oxaloacetic acid | 2. | Phosphoglyceric acid |
| 3. | Phosphoenol pyruvate | 4. | RuBisCO |
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 |
Where is the respiratory electron transport system (ETS) located in plants?
1. Mitochondrial matrix
2. Outer mitochondrial membrane
3. Inner mitochondrial membrane
4. Intermembrane space
Removal of shoot tips is a very useful technique to boost the production of tea leaves. This is because
| 1. | Gibberellins prevent bolting and are inactivated. |
| 2. | Auxins prevent leaf drop at early stages. |
| 3. | Effect of auxins is removed and growth of lateral buds is enhanced. |
| 4. | Gibberellins delay senescence of leaves. |
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 |
Match the items given in Column - I with those in Column - II and choose the correct option.
| Column-I | Column-II | ||
| (a) | Rennin | (i) | Vitamin B12 |
| (b) | Enterokinase | (ii) | Facilitated transport |
| (c) | Oxyntic cells | (iii) | Milk proteins |
| (d) | Fructose | (iv) | Trypsinogen |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (iv) | (ii) | (i) |
| 2. | (iv) | (iii) | (i) | (ii) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iii) | (iv) | (i) | (ii) |
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
Select the correct statement.
1. Expiration occurs due to external intercostal muscles.
2. Intrapulmonary pressure is lower than the atmospheric pressure during inspiration.
3. Inspiration occurs when atmospheric pressure is less than intrapulmonary pressure.
4. Expiration is initiated due to contraction of diaphragm.
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
All the components of the nodal tissue are autoexcitable. Why does the SA node act as the normal pacemaker ?
1. SA node has the lowest rate of depolarisation
2. SA node is the only component to generate the threshold potential.
3. Only SA node can convey the action potential to the other
4. SA node has the highest rate of depolarisation.
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 following parts of a nephron with their function:
| (a) | Descending limb of Henle's loop | (i) | Reabsorption of salts |
| (b) | Proximal convoluted tubule | (ii) | Reabsorption of water |
| (c) | Ascending limb of Henle's loop | (iii) | Conditional reabsorption of sodium ions and water |
| (d) | Distal convoluted tubule | (iv) | Reabsorption of ions, water and organic nutrients |
Select the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (i) | (iii) | (ii) | (iv) |
| 2. | (ii) | (iv) | (i) | (iii) |
| 3. | (i) | (iv) | (ii) | (iii) |
| 4. | (iv) | (i) | (iii) | (ii) |
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) |
| Column-I | Column-II | ||
| (a) | Gliding joint | (i) | Between carpal and metacarpal of thumb |
| (b) | Hinge joint | (ii) | Between Atlas and Axis |
| (c) | Pivot joint | (iii) | Between the Carpals |
| (d) | Saddle joint | iv | Between Humerus and Ulna |
Select the correct option from the following:
1. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
3. (a)-(iv), (b(-(ii), (c)-(iii), (d)-(i)
4. (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
Which of the following statements is not correct?
1. An action potential in an axon does not move backward because the segment behind is in a refractory phase.
2. Depolarization of hair cells of cochlea results in the opening of the mechanically gated Potassium- ion channels.
3. Rods are very sensitive and contribute to daylight vision.
4. In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction.
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
Which of the following hormones is responsible for both the milk ejection reflex and the foetal ejection reflex?
| 1. Oestrogen | 2. Prolactin |
| 3. Oxytocin | 4. Relaxin |
Identify A, B and C in the diagrammatic representation of the mechanism of hormone action.
Select the correct option from the following:
1. A = Steroid Hormone; B = Hormone receptor Complex; C = Protein
2. A = Protein Hormone; B = Receptor; C = Cyclic AMP
3. A = Steroid Hormone; B = Receptor; C = Second Messenger
4. A = Protein Hormone; B = Cyclic AMP; C = Hormone-receptor Complex
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 conditions will stimulate parathyroid gland to release parathyroid hormone ?
1. Fall in active Vitamin D levels
2. Fall in blood Ca+2 levels
3. Fall in bone Ca+2 levels
4. Rise in blood Ca+2 levels
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 |
What type of pollination takes place in Vallisneria ?
1. Pollination occurs in submerged condition by water.
2. Flowers emerge above surface of Water and pollination occurs by insects.
3. Flowers emerge above water surface and pollen is carried by wind.
4. Male flowers are carried by water currents to female flowers at surface of water.
In which one of the following, both autogamy and geitonogamy are prevented?
1. Wheat
2. Papaya
3. Castor
4. Maize
No new follicles develop in the luteal phase of the menstrual cycle because :
1. Follicles do not remain in the ovary after
2. FSH levels are high in the luteal phase
3. LH levels are high in the luteal phase
4. Both FSH and LH levels are low in the luteal phase
Which of the following is a correct statement?
| 1. | IUDs once inserted need not be replaced. |
| 2. | IUDs are generally inserted by the user herself. |
| 3. | IUDs increase the phagocytosis of sperms in the uterus. |
| 4. | IUDs suppress gametogenesis. |
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
Match the items of Column - I with Column - II:
| Column-I | Column-II | ||
| (a) | XX-XO method of sex determination | (i) | Turner's syndrome |
| (b) | XX-XY method of sex Determination | (ii) | Female heterogametic |
| (c) | Karyotype-45 | (iii) | Grasshopper |
| (d) | ZW-ZZ method of Sex Determination | (iv) | Female homogametic |
Select the correct option from the following:
1. (a) - (ii), (b)- (iv), (c)- (i), (d)-(iii)
2. (a) - (i), (b)- (iv), (c)- (ii), (d)-(iii)
3. (a) - (iii), (b)- (iv), (c)- (i), (d)-(ii)
4. (a) - (iv), (b)- (ii), (c)- (i), (d)-(iii)
In a marriage between a male with blood group A and a female with blood group B, the progeny had either blood group AB or B. What could be the possible genotype of parents?
| 1. | IA i (Male) ; IB IB (Female) |
| 2. | IA IA (Male) ; IB IB (Female) |
| 3. | IA IA (Male) ; IB i (Female) |
| 4. | IA i (Male) ; IB i(Female) |
In which genetic condition, each cell in the affected person, has three sex chromosomes XXY?
1. Thalassemia
2. Kleinfelter's Syndrome
3. Phenylketonuria
4. Turner's Syndrome
The production of gametes by the parents the formation of zygotes, the F1 and F2 plants can be understood using
1. Pie diagram
2. A pyramid diagram
3. Punnet square
4. Wenn diagram
What will be the sequence of mRNA produced by the following stretch of DNA?
3' ATGCATGCATGCATG 5' TEMPLATE STRAND
5' TACGTACGTACGTAC 3' CODING STRAND
1. 3' AUGCAUGCAUGCAUG 5'
2. 5' UACGUACGUACGUAC 3'
3. 3' UACGUACGUACGUAC 5'
4. 5' AUGCAUGCAUGCAUG 3'
Match the following RNA polymerases with their transcribed products:
|
Column-I |
Column-II |
||
|
(a) |
RNA polymerase I |
(i) |
tRNA |
|
(b) |
RNA polymerase II |
(ii) |
rRNA |
|
(c) |
RNA polymerase III |
(iii) |
hnRNA |
Select the correct option from the following:
1. (a)-(i), (b)-(iii), (c)-(ii)
2. (a)-(i), (b)-(ii), (c)-(iii)
3. (a)-(ii), (b)-(iii), (c)-(i)
4. (a)-(iii), (b)-(ii), (c)-(i)
From the following, identify the correct combination of salient features of Genetic Code
1. Universal, Non-ambiguous,Overlapping
2. Degenerate, Overlapping, Commaless
3. Universal, Ambiguous, Degenerate
4. Degenerate, Non-overlapping, Non ambiguous
In the process of transcription in Eukaryotes, the RNA polymerase I transcribes-
| 1. | mRNA with additional processing, capping and tailing |
| 2. | tRNA, 5 S rRNA and snRNAs |
| 3. | rRNAs - 28 S, 18 S and 5.8 S |
| 4. | Precursor of mRNA, hnRNA |
What initiation and termination factors are involved in transcription in prokaryotes?
| 1. | σ and ρ , respectively |
| 2. | α and β , respectively |
| 3. | β and γ , respectively |
| 4. | α and σ , respectively |
In Australia, marsupials and placental mammals have evolved to share many similar characteristics. This type of evolution may be referred to as -
1. Adaptive Radiation
2. Divergent Evolution
3. Cyclical Evolution
4. Convergent Evolution
A population of a species invades a new area. Which of the following condition will lead to Adaptive Radiation?
1. Area with large number of habitats having very low food supply.
2. Area with a single type of vacant
3. Area with many types of vacant habitats.
4. Area with many habitats occupied by a large number of species.
Which of the following statements is correct about the origin and evolution of men ?
1. Agriculture came around 50,000 years back.
2. The Dryopithecus and Ramapithecus primates existing 15 million years ago, walked like men.
3. Homo habilis probably ate meat.
4. Neanderthal men lived in Asia between 100000 and 40000 years back
A biocontrol agent to be a part of an integrated pest management should be
1. species-specific and symbiotic
2. free living and broad spectrum
3. narrow spectrum and symbiotic
4. species-specific and inactive on non-target organisms
Which of the following statements about methanogens is not correct?
1. The can be used to produce biogas,
2. They are found in the rumen of cattle and their excreta.
3. They grow aerobically and breakdown cellulose-rich food.
4. They produce methane gas.
Among the following pairs of microbes, which pair has both the microbes that can be used as biofertilizers ?
1. Aspergillus and Rhizopus
2. Rhizobium and Rhizopus
3. Cyanobacteria and Rhizobium
4. Aspergillus and Cyanobacteria
Select the incorrect statement regarding inbreeding:
1. Inbreeding helps in elimination of deleterious alleles from the population
2. Inbreeding is necessary to evolve a pure-line in any animal
3. Continued inbreeding reduces fertility and leads to inbreeding depression.
4. Inbreeding depression cannot be overcome by Out-crossing.
Mad cow disease in cattle is caused by an organism which has :
1. Inert crystalline
2. Abnormally folded protein
3. Free RNA without protein coat
4. Free DNA without protein coat
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
Humans have acquired immune system that produces antibodies to neutralize pathogens. Still innate immune system is present at the time of birth because it
1. is very specific and uses different macrophages,
2. produces memory cells for mounting fast secondary response.
3. has natural killer cells which can phagocytose and destroy microbes
4. provides passive immunity.
Which of the following diseases is an auto-immune disorder?
1. Myasthenia gravis
2. Arthritis
3. Osteoporosis
4. Gout
Coca alkaloid or cocaine is obtained from
1. Papaver somniferum
2. Atropha belladona
3. Erythroxylum coca
4. Datura
Match the following enzymes with their functions:
|
Column-I |
Column-II |
||
|
(a) |
Restriction endonuclease |
(i) |
joins the DNA fragments |
|
(b) |
Exonuclease |
(ii) |
extends primers on genomic DNA template |
|
(c) |
DNA ligase |
(iii) |
cuts DNA at specific position |
|
(d) |
Tag polymerase |
(iv) |
removes nucleotides from the ends of DNA |
Select the correct option from the following:
1. (a) - (iii), (b)- (i), (c)- (iv), (d)-(ii)
2. (a) - (iii), (b)- (iv), (c)- (i), (d)-(ii)
3. (a) - (iv), (b)- (iii), (c)- (i), (d)-(ii)
4. (a) - (ii), (b)- (iv), (c)- (i), (d)-(iii)
The two antibiotic resistance genes on vector pBR 322 are for:
| 1. | Ampicillin and Tetracycline |
| 2. | Ampicillin and Chloramphenicol |
| 3. | Chloramphenicol and Tetracycline |
| 4. | Tetracycline and Kanamycin |
Which scientist experimentally proved that DNA is the sole genetic material in bacteriophage ?
1. Beadle and Tatum
2. Messelson and Stahl
3. Hershey and Chase
4. Jacob and Monod
A selectable marker is used to :
1. help in eliminating the non-transformants so that the transformants can be regenerated
2. identify the gene for the desired trait in an alien organism
3. select a suitable vector for transformation in a specific crop
4. mark a gene on a chromosome for isolation using restriction enzyme
Given below are four statements pertaining to separation of DNA fragments using Gel electrophoresis. Identify the incorrect statements.
(a) DNA is negatively charged molecule and so it is loaded on gel towards the Anode terminal.
(b) DNA fragments travel along the surface of the gel whose concentration does not affect movement of DNA.
(c) Smaller the size of DNA fragment, larger is the distance it travels through it.
(d) Pure DNA can be visualized directly by exposing to UV radiation.
1. (a), (c) and (d)
2. (a), (b) and (c)
3. (b), (c) and (d)
4. (a), (b) and (d)
An enzyme catalysing the removal of nucleotides from ends of DNA is:
| 1. | DNA ligase | 2. | Endonuclease |
| 3. | Exonuclease | 4. | Protease |
In RNAi, the genes are silenced using :
1. dsRNA
2. ssDNA
3. ssRNA
4. dsDNA
Carnivorous animals - lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as -
1. Character displacement
2. Altruism
3. Resource partitioning
4. Competitive exclusion
Between which among the following, the relationship is not an example of commensalism?
| 1. | Orchid and the tree on which it grows |
| 2. | Cattle Egret and grazing cattle |
| 3. | Sea Anemone and Clown fish |
| 4. | Female wasp and fig species |
The exploitation of bioresources of a nation by multinational companies without authorization from the concerned country is referred to as:
1. Bioweapon
2. Biopiracy
3. Bioethics
4. Biowar
The decline in the population of Indian native fishes due to the introduction of Clarias gariepinus in the river Yamuna can be categorised as:
| 1. | Co-extinction |
| 2. | Habitat fragmentation |
| 3. | Over-exploitation |
| 4. | Alien species invasion |
Western Ghats have a large number of plant and animal species that are not found anywhere else. Which of the following terms will you use to notify such species?
| 1. | Endemic | 2. | Vulnerable |
| 3. | Threatened | 4. | Keystone |
Exploration of molecular, genetic, and species level diversity for novel products of economic importance is known as:
1. Biopiracy
2. Bioenergetics
3. Bioremediation
4. Bioprospecting
Which of the following statements about ozone is correct ?
1. Tropospheric ozone protects us from UV radiations.
2. Stratospheric ozone is 'bad'.
3. Tropospheric ozone is 'good'
4. Stratospheric ozone protects us from UV radiations.
Which of the following is an innovative remedy for plastic waste?
| 1. | Burning in the absence of oxygen |
| 2. | Burying 500 m deep below the soil surface |
| 3. | Polyblend |
| 4. | Electrostatic precipitator |
If an agricultural field is liberally irrigated for a prolonged period of time, it is likely to face a problem of :
1. Metal toxicity
2. Alkalinity
3. Acidity
4. Salinity
