Identify the incorrect comparison of Kwashiorkor and Marasmus:
|
|
Kwashiorkor |
Marasmus |
1. |
Cause |
Protein deficiency with adequate energy intake |
Inadequate energy intake in all forms, including protein |
2. |
Age incidence |
Increases after 18 months |
Prior to age 1 |
3. |
Main clinical sign |
Muscular wasting and loss of subcutaneous fat |
Edema and ascites [abnormal buildup of fluid in the abdomen] |
4. |
Fatty infiltration in liver |
Common |
Not common |
The total number of vertebrosternal and vertebrochondral ribs in human body respectively are:
1. | 7 and 3 | 2. | 14 and 6 |
3. | 3 and 7 | 4. | 6 and 14 |
The proximal convoluted tubule of the nephron is lined by:
1. simple ciliated cuboidal epithelium
2. simple ciliated columnar epithelium
3. compound cuboidal brush bordered epithelium
4. simple cuboidal brush bordered epithelium
Which of the following has the highest affinity for oxygen?
1. HbS
2. HbA
3. HbF
4. Methemoglobin
Exchange of nutrients and gases between the blood and the cells always occurs:
1. by active transport
2. with the help of transport carrier proteins
3. at the arterial end of the capillary network
4. through the interstitial fluid
Identify the correct match:
1. |
Fovea centralis |
Point of highest visual acquity |
2. |
Optic disc |
Visual cortex in cerebrum |
3. |
Ciliary body |
Light and dark adaptation |
4. |
Macula lutea |
Lacks any rods and cones |
Mental depression psychosis, affecting millions, may be basically caused by the diminished formation in the brain of:
1. Acetylcholine
2. Dopamine
3. Serotonin
4. Glutamate
The milk produced during the initial few days of lactation, called colostrum, is essential for the newborn as colostrums contains:
1. | a Large amount of glucose | 2. | Anti-infective antibodies |
3. | Fats | 4. | Various hormones |
Which of the following is not a factor that has led to a population explosion in India?
1. | Decline in death rate |
2. | Decline in maternal mortality rate |
3. | Decline in Infant mortality rate |
4. | Decline in the number of people in reproducible age |
The cavity of a tertiary follicle is called as:
1. | Antrum | 2. | Cumulus |
3. | Vitelline space | 4. | Sinusoid |
Identify the incorrectly matched pair:
1. Conn’s disease: Hyperaldosteronism
2. Addison’s disease: Hypoadrenalism
3. Osteitis, fibrosa, cystica: Hypoprathyroidism
4. Hashimoto’s disease: Hypothyroidism
An important site of the formation of glycoproteins and glycolipids in a eukaryotic cell is the:
1. Rough endoplasmic reticulum
2. Smooth endoplasmic reticulum
3. Golgi apparatus
4. Lysosomes
Consider the following key events:
I: | Chromosomes cluster at opposite spindle poles and their identity is lost as discrete elements. |
II: | Nucleolus, Golgi complex and ER reform. |
The stage of mitosis characterized by these key events is:
1. | Prophase | 2. | Metaphase |
3. | Anaphase | 4. | Telophase |
The ion required as the co-factor for the proteolytic enzyme, carboxypeptidase, is:
1. Zinc
2. Copper
3. Iron
4. Manganese
The major problem with the use of chemicals to control plant diseases and pests is:
1. High cost
2. Ineffectivity against most pathogens
3. Difficulty in production
4. Non-specific nature
The work of which of the following scientists led to the establishment of the discipline of modern biotechnology?
1. | Banting and Best | 2. | Bolivar and Rodriguez |
3. | Hershey and Chase | 4. | Cohen and Boyer |
U238, the radioactive isotope of uranium, is very useful in absolute dating of rocks. It’s half life is about:
1. 4500 years
2. 4.5 million years
3. 45 million years
4. 4.6 billion years
The control apparatus of the Urey and Miller experiment was devoid of :
1. a provision for evaporation
2. an arrangement for circulation
3. a source of energy
4. an arrangement for condensation
In some viruses, DNA is synthesised by using RNA as a template. Such a DNA is called:
1. | A-DNA | 2. | B-DNA |
3. | cDNA | 4. | rDNA |
Restriction endonucleases present in bacterial cells provide an advantage to the cell because these enzymes:
1. | can identify the mutated sequences on the chromosomal DNA and help in their repair |
2. | selectively bind to particular nucleotide sequences that may appear in viral DNA preventing its replication in the cell |
3. | can cut the plasmid DNA of the bacterial cell that allows them to recombine foreign DNA into their plasmid DNA |
4. | help the bacterium take up foreign DNA from their environment and combine it into their genome |
What decides the frequency of an allele in a population?
1. | Dominance |
2. | Its location on a particular chromosome |
3. | Its degree of expression |
4. | Natural selection |
Arrange the following steps of a plant breeding program in a correct chronological manner:
I. | Selection and testing of superior recombinants |
II. | Collection of variability |
III. | Cross hybridisation among the selected parents |
IV. | Evaluation and selection of parents |
V. | Testing, release, and commercialisation of new cultivars |
1. | II, IV, I, III, V | 2. | IV, I, II, III, V |
3. | II, IV, III, I, V | 4. | IV, III, II, I, V |
In over 60 % of angiosperms, pollen grains are shed at:
1. | 2-celled stage | 2. | 3-celled stage |
3. | 4-celled stage | 4. | 1-celled stage |
Consider the following statements regarding floral primordium:
I: | It is formed at the shoot apical meristem |
II: | The development of flowers is dependent on genetics, PGR, and environmental conditions. |
Of the two statements:
1. | Only I is correct |
2. | Only II is correct |
3. | Both I and II are correct |
4. | Both I and II are incorrect. |
Methanol is converted to formaldehyde in our bodies. It inhibits mitochondrial cytochrome c oxidase. It also causes blindness. The treatment of methanol toxicity is :
1. | Thiamine | 2. | L - Dopa |
3. | Ethanol | 4. | Atropine |
The lac operon is regarded as:
1. | Negative, Inducible | 2. | Negative, Repressible |
3. | Positive, Inducible | 4. | Positive, Repressible |
The expression of only one of the parental characters in a monohybrid cross in the F1, the expression of both in the F2 and the proportion of 3:1 obtained at the F2 can be explained by:
1. Law of Dominance
2. Law of segregation
3. Law of Independent Assortment
4. Two-factor interaction
The main difference between taxonomy and systematics is that:
1. | Taxonomy is involved in the naming and classification of organisms while systematics is involved in determining evolutionary relationships between organisms |
2. | Systematics is involved in the naming and classification of organisms while taxonomy is involved in determining evolutionary relationships between organisms |
3. | Taxonomy is not a true science and has largely been replaced with systematics |
4. | Systematics can be considered as a part of taxonomy |
In gymnosperms, the ovules are:
1. not enclosed by any ovary wall before and after fertilization
2. not enclosed by any ovary wall only before fertilization
3. not enclosed by any ovary wall only after fertilization
4. enclosed by an ovary wall before and after fertilization
Methanogens are commonly present in:
1. Alimentary canal of the lower invertebrates
2. Symbiotic relationships with xerophytic plants
3. Gut of ruminant animals
4. Close associations with corals
Halophiles are archaebacteria adapted to extreme:
1. | Hot habitats | 2. | Saline habitats |
3. | Marshy habitats | 4. | Cold habitats |
In male cockroaches, the genital pouch is bounded by:
1. 9th and 10th terga dorsally and 10th sternum ventrally
2. 9th tergum dorsally and 9th and 10th sterna ventrally
3. 9th and 10th terga dorsally and 9th sternum ventrally
4. 9th and 10th terga dorsally and 9th and 10th sterna ventrally
Identify the incorrectly matched pair:
Phylum |
Characteristic |
|
1. |
Porifera |
Water vascular system |
2. |
Ctenophora |
Bioluminescence |
3. |
Molluska |
Radula |
4. |
Annelida |
Closed circulatory system |
Phellogen and Phellem respectively denote
1. Cork and cork cambium
2. Cork cambium and cork
3. Secondary cortex and cork
4. Cork and secondary cortex
The mature seed of plants such as gram and peas, possess no endosperm, because
1. These plants are not angiosperms
2. There is no double fertilization in them
3. Endosperm is not formed in them
4. Endosperm gets used up by the developing embryo during seed development
If the fruit is formed without the fertilization of ovary, it is called as:
1. | Parthenogenetic | 2. | Parthenocarpic |
3. | Aggregate | 4. | False |
Ascaris is characterized by:
1. Presence of true coelom but absence of metamerism
2. Presence of true coelom and metamerism
3. Absence of true coelom but presence of metamerism
4. Presence of neither true coelom nor metamerism
What parameters are used for the tiger census in our country’s national parks and sanctuaries?
1. | Pug marks only | 2. | Pugmarks and fecal pellets |
3. | Faecal pellets only | 4. | Actual headcounts |
Catalytic converters are fitted into automobiles to reduce the emission of harmful gases. Catalytic converters change unburnt hydrocarbons into:
1. Carbon dioxide and water
2. Carbon monoxide
3. Methane
4. Carbon dioxide and methane
According to CPCB, what particulate size is most harmful to humans:
1. more than 10 micrometers
2. between 5 to 10 micrometers
3. between 2.5 and 5 micrometers
4. less than 2.5 micrometers
Which of the following statements is correct?
1. Parthenium is an endemic species of our country.
2. African catfish is not a threat to indigenous catfishes.
3. Steller’s sea cow is an extinct animal
4. Lantana is popularly known as carrot grass.
Climax community is in a state of :
1. Non-equilibrium
2. Equilibrium
3. Disorder
4. Constant change
Organisms at each trophic level depend on those at the lower level trophic level for their energy demands except:
1. | Primary consumers | 2. | Secondary consumers |
3. | Tertiary consumers | 4. | Decomposers |
In a pond, there were 20 lotus plants last year. If through reproduction 4 new lotus plants are added, the number of offspring per lotus per year would be:
1. | 0.2 | 2. | 0.4 |
3. | 2.0 | 4. | 4.0 |
What is the number of ATP molecules produced when pyruvate is converted to lactate by fermentation?
1. 0 | 2. 2 |
3. 4 | 4. 38 |
The 2-carbon compound formed in photorespiration is:
1. | Acetyl CoA | 2. | Phosphoglycolate |
3. | Acetic acid | 4. | Ethanol |
Refer section 11.1.1 of your NCERT. What peculiarity does NCERT mention regarding diffusion and solids ?
1. It does not occur in solids
2. It is more easily visualized in solids
3. It requires expenditure of external energy and occurs against concentration gradient
4. Diffusion in solids rather than of solids is more likely.
Out of ‘X’ pairs of ribs in humans, only ‘Y’ pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation.
1. X = 12, Y = 15 True ribs are attached dorsally to vertebral column and sternum on the two ends
2. X = 24, Y = 7 True ribs are dorsally attached to vertebral column but are free on ventral side
3. X = 24, Y = 12 True ribs are dorsally attached to vertebral column but are free on ventral side
4. X = 12, Y = 7 True ribs are attached dorsally to vertebral column and ventrally to the sternum
Which of the following structures or regions is incorrectly paired with its function?
1. Hypothalamus - Production of releasing hormones and regulation of temperature, hunger and thirst.
2. Limbic system - Consists of fibre tracts that interconnect different regions of brain; controls movement.
3. Medulla oblongata - Controls respiration and cardiovascular reflexes.
4. Corpus callosum - Band of fibres connecting left and right cerebral hemispheres.
What is the correct sequence of sperm formation?
1. Spermatid, Spermatocyte, Spermatogonia, Spermatozoa
2. Spermatogonia, Spermatocyte, Spermatozoa, Spermatid
3. Spermatogonia, Spermatozoa, Spermatocyte, Spermatid
4. Spermatogonia, Spermatocyte, Spermatid, Spermatozoa
Agarose extracted from sea weeds finds use in
1. Spectrophotometry
2. Tissue Culture
3. PCR
4. Gel electrophoresis
Which one of the following pairs of codons is correctly matched with their function or the signal for the
particular amino acid ?
1. AUG, ACG – start/methionine
2. UUA, UCA – Leucine
3. GUU – Alanine
4. UAG, UGA – stop
Which one of the following in & generates new genetic combinations leading to variation?
1. Nucellar polyembryony
2. Vegetative reproduction
3. Parthenogenesis
4. Sexual reproduction
Which one of the following statements is wrong?
1. | When pollen is shed at two-celled stage, double fertilization does not take place. |
2. | Vegetative cell is larger than generative cell. |
3. | Pollen grains in some plants remain viable for months. |
4. | Intine is made up of cellulose and pectin. |
A transgenic food crop which may help in solving the problem of night blindness in developing countries is
1. Bt Soybean
2. Golden Rice
3. Flavr Savr Tomatoes
4. Starlink Maize
Which one of the following is a pair of viral diseases?
1. Ringworm, AIDS
2. Common Cold, AIDS
3. Dysentery, common cold
4. Typhoid, Tuberculosis
Which of the following most appropriately describes haemophilia?
1. | Dominant gene disorder |
2. | Recessive gene disorder |
3. | X-linked recessive gene disorder |
4. | Chromosomal disorder |
Three crops that contribute maximum to global food grain production are
1. wheat , rice and maize
2. Rice, maize and sorghum
3. Wheat, maize and sorghum
4. Wheat, rice and barley
Modern detergents contain enzyme preparations of
1. Thermoacidophiles
2. Thermophiles
3. Acidophiles
4. Alkaliphiles
Meiosis occurs in
1. Megaspore
2. Meiocyte
3. Conidia
4. Gemmule
Conifers are adapted to tolerate extreme environmental conditions because of
1. presence of vessels | 2. broad hardy leaves |
3. superficial stomata | 4. thick cuticle |
Select the wrong statement.
1. Diatoms are microscopic and float passively in water.
2. The walls of diatoms are easily destructible.
3. ‘Diatomaceous earth’ is formed by the cell walls of diatoms.
4. Diatoms are chief producers in the oceans.
The floral formula represents
1. Solanumnigrum
2. Hibiscus rosa-sinensis
3. Citrus aurantum
4. Brassica campestris
Which one of the following animals is correctly matched with its particular named taxonomic category?
1. Tiger - tigris, the species
2. Cuttlefish - Mollusca, a class
3. Humans - Primata, the family
4. Housefly - Musca, an order
Drinking mineral water with low levels ( ~ 0.02 ppm) of pesticide for long period would
1. Cause cancer of intestine
2. Pesticide accumulation in the body
3. Cause leukaemia
4. Produce immunity against mosquito
Identify the correctly matched pair
1. Basel convention - Biodiversity conservation
2. Kyoto protocol - Climate change
3. Montreal protocol - Global warming
4. Ramsar convention - Ground water pollution
Which one is the odd combination of habitat and the particular animal
1. Sunderbans– Bengal Tiger
2. Periyar–Elephant
3. Rann of Kutch–Wild Ass
4. Dachingam National Park – Snow Leopard
Study the four statements (a-d) given below and select the two correct ones out of them:
(a) | A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers |
(b) | Predator starfish pisaster helps in maintaining species diversity of some invertebrates |
(c) | Predators ultimately lead to the extinction of prey species |
(d) | Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders |
The two correct statements are:
1. | (c) and (d) | 2. | (a) and (d) |
3. | (a) and (b) | 4. | (b) and (c) |
Which one is the correct sequence occurring in glycolysis?
1. G-6-P →PEP →3-PGAL →3-PGA
2. G-6-P →3-PGAL → 3-PGA →PEP
3. G-6-P →PEP →3-PGA →3-PGAL
4. G-6-P →3-PGA →3-PGAL →PEP
With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?
1. Increasing atmospheric concentration up to 0.05 % can enhance fixation rate
2. plants respond to higher temperatures with enhanced photosynthesis while plants have much lower temperature optimum
3. Tomato is a greenhouse crop which can be grown in – enriched atmosphere for higher yield
4. Light saturation for fixation occurs at 10% of full sunlight
Leguminuous plants are able to fix atmoshpheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statement is not correct during this process of nitrogen fixation ?
1. Nodules act as sites for nitrogen fixation
2. The enzyme nitrogenase catalyses the conversion of atmospheric N2 to NH3
3. Nitrogenase is insensitive to oxygen
4. Leghamoglobin scavenges oxygen and pinkish in color.
Water vapor comes out from the plant leaf through the stomatal opening. Through the same stomatal opening, carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of the following options
1. Both processes cannot happen simultaneously
2. Both processes can happen together because the diffusion coefficient of water and CO2 is different
3. The above processes happen only during night time
4. One process occurs during day time and the other at night
Which of the following layers in an antral follicle is acellular?
1. Granulosa
2. Theca interna
3. Stroma
4. Zona pellucida
Injury to adrenal cortex is not likely to affect the secretion of which one of the following ?
1. Aldosterone
2. Both androstenedione and dehydroepiandrosterone
3. Adrenalin
4. Cortisol
Match the hominids with their correct brain size:
(a) Homo habilis (i) 900 cc
(b) Homo neanderthalensis (ii) 1250 cc
(c) Homo erectus (iii) 650-800 cc
(d) Homo sapiens (iv) 1400 cc
Select the correct option.
(a) (b) (c) (d)
1. (iv) (iii) (i) (ii)
2. (iv) (i) (iv) (ii)
3. (iii) (ii) (i) (iv)
4. (iii) (iv) (i) (ii)
Which of the following pair of organelles does not contain DNA?
1. Nuclear envelope and Mitochondria
2. Mitochondria and Lysosomes
3. Chloroplast and Vacuoles
4. Lysosomes and vacuoles
Select the incorrect statement:
1. | Human males have one of their sex-chromosome much shorter than the other. |
2. | Male fruit fly is heterogametic. |
3. | In male grasshoppers, 50% of sperms have no sex chromosome. |
4. | In domesticated fowls, the sex of progeny depends on the type of sperm rather than the egg. |
The process of growth is maximum during:
1. Lag phase
2. Senescence
3. Dormancy
4. Log phase
Match the following:
(a) | Inhibitor of catalytic activity | (i) | Ricin |
(b) | Possess peptide bonds | (ii) | Malonate |
(c) | Cell wall material in fungi | (iii) | Chitin |
(d) | Secondary metabolite | (iv) | Collagen |
Choose the correct option from the following:
(a) | (b) | (c) | (d) | |
1. | (iii) | (i) | (iv) | (ii) |
2. | (iii) | (iv) | (i) | (ii) |
3. | (ii) | (iii) | (i) | (iv) |
4. | (ii) | (iv) | (iii) | (i) |
Some dividing cells exit the cell cycle and enter the vegetative inactive stage. This is called the quiescent stage G0. This process occurs at the end of:
1. | G1 phase | 2. | S phase |
3. | G2 phase | 4. | M phase |
Match the follwing columns and select the correct option.
(a) | Pituitary gland | (i) | Grave's disease |
(b) | Thyroid gland | (ii) | Diabetes mellitus |
(c) | Adrenal gland | (iii) | Diabetes insipidus |
(d) | Pancreas | (iv) | Addison's disease |
(a) | (b) | (c) | (d) | |
1. | (iii) | (ii) | (i) | (iv) |
2. | (iii) | (i) | (iv) | (ii) |
3. | (ii) | (i) | (iv) | (iii) |
4. | (iv) | (iii) | (i) | (ii) |
E.coli has only 4.6 × base pairs and completes the process of replication within 18 minutes; then the average rate of polymerization is approximate-
(1) 2000 base pairs/second
(2) 3000 base pairs/second
(3) 4000 base pairs/second
(4) 1000 base pairs/second
Which of the following statements about cork cambium is incorrect?
1. It forms a secondary cortex on its outside
2. It forms a part of periderm
3. It is responsible for the formation of lenticels
4. It is a couple of layers thick
Progestogens alone or in combination with estrogens can be used as a contraceptive in the form of -
(1) Implants only
(2) Injections only
(3) Pills, injections and implants
(4) Pills only
In cockroach, identify the parts of the foregut in correct sequence:-
1. Mouth Oesophagus Pharynx Crop Gizzard
2. Mouth Crop Pharynx Oesophagus Gizzard
3. Mouth Gizzard Crop Pharynx Oesophagus
4. Mouth Pharynx Oesophagus Crop Gizzard
Match the following concerning the activity/function and the phytohormone involved:-
(a) | Fruit ripener | (i) | Abscisic acid |
(b) | Herbicide | (ii) | GA 3 |
(c) | Bolting agent | (iii) | 2, 4-D |
(d) | Stress hormone | (iv) | Ethephon |
Select the correct option from following:-
(a) | (b) | (c) | (d) | |
1. | (ii) | (iii) | (iv) | (i) |
2. | (iii) | (iv) | (ii) | (i) |
3. | (iv) | (iii) | (ii) | (i) |
4. | (iv) | (ii) | (i) | (iii) |
Which of the following conditions cause erythroblastosis foetalis?
1. Mother Rh+ve and fetus Rh-ve
2. Mother Rh-ve and fetus Rh+ve
3. Both mother and fetus Rh-ve
4. Both mother and fetus Rh+ve
Match the following columns and select the correct option :
Column I | Column II | ||
(a) | Pneumotaxic centre | (i) | Alveoli |
(b) | O2 dissociation curve | (ii) | Pons region of the brain |
(c) | Carbonic anhydrase | (iii) | Haemoglobin |
(d) | Primary site of exchange of gases | (iv) | R.B.C. |
(a) | (b) | (c) | (d) | |
1. | (i) | (iii) | (ii) | (iv) |
2. | (ii) | (iii) | (iv) | (i) |
3. | (iii) | (ii) | (iv) | (i) |
4. | (iv) | (i) | (iii) | (ii) |
Select the correct statement :
1. Atrial Natriuretic Factor increases blood pressure.
2. Angiotensin II is a powerful vasodilator.
3. Counter current pattern of blood flow is not observed in the vasa recta.
4. Reduction in Glomerular Filtration Rate activates JG cells to release renin.
The proteolytic enzyme rennin is found in :
(1) Intestinal juice
(2) Bile juice
(3) Gastric juice
(4) Pancreatic juice