The ion, critical in absorption of nutrients like amino acids and glucose in the human alimentary canal, is:
1. Na+
2. H+
3. K+
4. Ca++
An example of a fibrous joint ‘gomphosis’ in the human body is:
1. | humerus-ulna | 2. | femur-innominate |
3. | tooth-alveolus | 4. | mandible-temporal |
The increasing gradient of osmolarity in medullary interstitium, during concentration of urine, is mainly caused by reabsortion of:
1. | NaCl from ascending limb of loop of Henle and of urea by collecting duct |
2. | NaCl from descending limb of loop of Henle and of urea by collecting duct |
3. | NaCl from ascending limb of loop of Henle and of urea by PCT |
4. | NaCl from descending limb of loop of Henle and of urea by PCT |
It is necessary that lungs must be present in anatomically air-tight chamber because:
1. we cannot directly alter the pulmonary volume
2. our lungs are not made of any elastic tissue
3. the pleural cavity always has a positive pressure with respect to pulmonary pressure
4. the partial pressure of oxygen in atmosphere is less than that in the alveoli
The SA node is called as the normal pacemaker of the human heart because:
1. it is the only muscle in the nodal tissue and human heart is myogenic
2. it is the remnant of the sinus venosus
3. it is located in the right atrium, and atria must contract before ventricles
4. it generates impulse at maximum rate in the nodal tissue
Photopigments in the human eye are composed of:
1. a lipid and an ester of vitamin A
2. a protein and an ester of vitamin A
3. a lipid and an aldehyde of vitamin A
4. a protein and an aldehyde of vitamin A
The scala vestibuli and scala tympani contain perilymph and are connected at the:
1. cochlear duct | 2. helicotrema |
3. semicircular duct | 4. vestibule |
The fetal body is covered with fine hair, eyelashes separate, and eyelashes are formed by the end of:
1. | 20 weeks | 2. | 24 weeks |
3. | 28 weeks | 4. | 30 weeks |
The statutory marriageable age in India for males and females respectively are:
1. | 21, 18 | 2. | 18, 21 |
3. | 18, 18 | 4. | 21, 21 |
What happens when a sperm enters the cytoplasm of the secondary oocyte?
1. Release of first polar body
2. Completion of meiosis II
3. Degeneration of polar bodies
4. Dissolution of zona pellucida
Which anterior pituitary hormone is predominantly under inhibitory control?
1. LH
2. Growth hormone
3. Prolactin
4. Thyrotropin
The living state of an organism is a :
1. non-equlibrium steady state
2. non-equilibrium variable state
3. steady state in perfect equlibrium
4. variable state in perfect quilibrium
Consider the following two statements:
I: | Plant cells undergo cytokinesis in a different manner than the animal cells. |
II: | Plant cells are enclosed by a relatively inextensible cell wall. |
Of the two statements:
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. I is incorrect but II is correct
Consider the following enzymes:
I. Catalase
II. Peroxidase
III. Carboxypeptidase
Which of these enzymes require haem as a co-factor for their activity?
1. | I only | 2. | I and II only |
3. | II and III only | 4. | I, II and III |
Baculoviruses are:
1. Species specific; Broad spectrum insecticides
2. Generalized; Broad spectrum insecticides
3. Species specific; Narrow spectrum insecticides
4. Generalized; Narrow spectrum insecticides
What controls the copy number of linked DNA if plasmid is used as a vector in bacterial transformation?
1. | Ori | 2. | rop |
3. | Selectable markers | 4. | Promoter in the insert |
The term “Homologous “ to mean the organs of different species that are related to each other through common descent, although now functionally different, was coined by :
1. Richard Owen
2. Erasmus Darwin
3. Ernst Haeckel
4. John Ray
The fossils of Homo erectus were discovered in _____ and it existed about ____ mya.
1. Tanzania; 2
2. Java; 1.5
3. Ethiopia; 1.5
4. Australia; 2
The RNA polymerase holoenzyme transcribes:
1. the promoter, structural gene and the terminator region
2. the promoter and the terminator region
3. the structural gene and the terminator region
4. the structural gene only.
A direct target for gene therapy would include all the following cells except:
1. | erythrocytes | 2. | muscle fibers |
3. | hepatocytes | 4. | vascular endothelium |
Identifying all the genes in the genome that are transcribed into RNA is called:
1. | Expressed Sequence Tag | 2. | Sequence Annotation |
3. | Inverse PCR | 4. | Retrotransposition |
A certain gene has 5 alleles. What will be the number of possible genotypic combinations?
1. 5
2. 15
3. 32
4. 2
PusaSem 2, a variety of flat bean, is resistant to all the following pests except:
1. | Aphids | 2. | Jassids |
3. | Fruit borer | 4. | Bollworm |
Transfer of pollens from the anther to the stigma of the same flower is called:
1. | Autogamy | 2. | Geitonogamy |
3. | Xenogamy | 4. | Cleistogamy |
In angiosperms, the mature female gametophyte is represented by:
1. | Nucellus | 2. | Megaspore |
3. | MMC | 4. | Embryosac |
HIV selectively infects and destroys:
1. | CD4 T Lymphocytes | 2. | CD8 T Lymphocytes |
3. | T-Suppressor cells | 4. | B-Lymphocytes |
On self-pollinated a tall F2 plant, the progeny can be:
1. | Tall only | 2. | Dwarf only |
3. | Intermediate in height | 4. | Tall and Dwarf |
Panthera tigris belongs to the Felidae family. What taxonomic category does Panthera represent?
1. | Species | 2. | Family |
3. | Genus | 4. | Order |
Which of the following is not a green alga?
1. Ulothrix | 2. Chara |
3. Volvox | 4. Ectocarpus |
Which of the following is not a feature of members of Kingdom Fungi?
1. Eukaryotic cell type
2. Chitinous cell wall
3. Organ system body organization
4. Heterotrophic mode of nutrition
Mosaic vision in Periplaneta is characterized by:
1. High sensitivity but low resolution
2. Low sensitivity but high resolution
3. High sensitivity and high resolution
4. Low sensitivity and low resolution
The animals belonging to all the following groups are exclusively marine except:
1. | Ctenophora | 2. | Porifera |
3. | Protochordata | 4. | Echinodermata |
A piece of wood having no vessels (trachea) must be belong to
1. Teak
2. Mango
3. Pine
4. Palm
Endosperm, a product of double fertilization in angiosperms is absent in the seeds of
1. | Gram | 2. | Orchids |
3. | Maize | 4. | Castor |
Underground stems of potato, ginger, turmeric, Zaminkand and Colocasia:
I. Store food in them
II. Act as organs of perennation
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Which of the following is not a feature of Porifera?
1. Exclusively marine animals
2. Presence of a water transport or a canal system
3. Sexes are not separate
4. Internal fertilization and indirect development
In 2005, for each of the 14 million people present in a country, 0.028 were born and 0.008 died during the year. Using the exponential equation, the number of people present in 2015 is predicted as:
1. | 25 million | 2. | 17 million |
3. | 20 million | 4. | 18 million |
Which one of the following diseases is not caused due to contamination of water?
1. | Hepatitis-B | 2. | Jaundice |
3. | Cholera | 4. | Typhoid |
The pH of normal rainwater is:
1. | 6.0 to 7.0 | 2. | 6.5 to 7.5 |
3. | 5.6 to 6.5 | 4. | less than 5.5 |
The active chemical drug reserpine is obtained from:
1. | Datura | 2. | Rauwolfia |
3. | Atropa | 4. | Papaver |
If the carbon atoms fixed by producers already have passed through three species, the trophic level of the last species would be
1. | Scavenger | 2. | Tertiary producer |
3. | Tertiary consumer | 4. | Secondary consumer |
Identify the correct statements:
I: | Only a few individuals can be taken into account at any trophic level and the deductions may be generalised. |
II: | Trophic level is a functional level and does not represent a species. |
III: | A given species may occupy more than one trophic level in the same ecosystem at the same time. |
1. | Only I and II | 2. | Only I and III |
3. | Only II and III | 4. | I, II, III and IV |
If a new habitat is just being colonized, which of the following is most likely to contribute to an increase in the population density?
1. | Birth rate | 2. | Death rate |
3. | Immigration | 4. | Emigration |
The correct descending order of the RQ value, when carbohydrates, proteins and fats are used as respiratory substrate would be:
1. Protein ˃ Fats ˃ Carbohydrates
2. Protein ˃ Carbohydrates ˃ Fats
3. Carbohydrates ˃ Protein ˃ Fats
4. Fats ˃ Carbohydrates ˃ Protein
Except for plants in shade or in dense forests, light is rarely a limiting factor in nature. This is because:
1. Dark reactions do not depend on light
2. The rate of photosynthesis can be increased by higher carbon dioxide and lower temperatures even in low light conditions
3. Light saturation occurs at 10 % of full sunlight
4. Carbon fixation is independent of enzymes
When a plant undergoes senescence, the nutrients may be
1. Exported
2. Withdrawn
3. Translocated
4. None of the above
Changes in GnRH pulse frequency in females is controlled by circulating levels of
1. Estrogen and progesterone
2. Estrogen and inhibin
3. Progesterone only
4. Progesterone and inhibin
Jurassic period of the Mesozoic era is characterized by
1. Gymnosperms are dominant plants and first birds appears.
2. Radiation of reptiles and origin of mammal like reptiles.
3. Dinosaurs become extinct and angiosperms appears.
4. Flowering plants and first dinosaurs appear.
Which one is a true statement regarding DNA polymerase used in PCR?
1. It is used to ligate introduced DNA in the recipient cell
2. It serves as a selectable marker
3. It is isolated from a virus
4. It remains active at high temperature
Removal of introns and joining of exons in a defined order during transcription is called:
1. Looping
2. Inducing
3. Slicing
4. Splicing
Pollination in water hyacinth and water lily is brought about by the agency of
1. bats
2. water
3. insects or wind
4. birds
Perisperm differs from endosperm in:
1. | having no reserved food. |
2. | being a diploid tissue. |
3. | its formation by fusion of a secondary nucleus with several sperms. |
4. | being a haploid tissue. |
Transgenic plants are the ones:
1. | Grown in an artificial medium after hybridization in the field. |
2. | Produced by a somatic embryo in an artificial medium. |
3. | Generated by introducing foreign DNA into a cell and generating a plant from that cell. |
4. | Produced after protoplast fusion in an artificial medium. |
Use of anti-histamines and steroids gives quick relief from:
1. Allergy
2. Nausea
3. Cough
4. Headache
Which one from those given below are the periods for Mendel's hybridization experiments?
1. 1856 - 1863
2. 1840 - 1850
3. 1857 - 1869
4. 1870 – 1877
Crop plants grown in monoculture are
1. Low in yield.
2. Free from intraspecific competition.
3. Characterized by poor root system.
4. Highly prone to pests.
Which one of the following pairs is wrongly matched?
1. Textile - amylase
2. Detergents - lipase
3. Alcohol - nitrogenase
4. Fruit juice - pectinase
Which one of the following generates new genetic combinations leading to variation?
1. Nucellar polyembryony
2. Vegetative reproduction
3. Parthenogenesis
4. Sexual reproduction
Select the mismatch:
1. | Pinus - Dioecious | 2. | Cycas - Dioecuous |
3. | Salvinia - Heterosporous | 4. | Equisetum - Homosporous |
Which of the following are found in extreme saline conditions?
1. Archaebacteria
2. Eubacteria
3. Cyanobacteria
4. Mycobacteria
Which among the following are the smallest living cells known without a definite cell wall that are pathogenic to plants as well as animals and can survive without oxygen?
1. | Bacillus | 2. | Pseudomonas |
3. | Mycoplasma | 4. | Nostoc |
Vexillary aestivation is characteristic of the family
1. Fabaceae
2. Asteraceae
3. Solanaceae
4. Brassicaceae
Which one of the following categories of animals, is correctly described with no single exception in it ?
1. All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal).
2. All bony fishes have four pairs of gills and an operculum on each side.
3. All sponges are marine and have collared cells.
4. All mammals are viviparous and possess diaphragm for breathing.
Formation of non functional methaemoglobin causes blue baby syndrome. This is due to
1. Excess of arsenic in drinking water
2. Excess of nitrate in drinking water
3. Deficiency of iron in food
4. Increased methane content in atmosphere
Montreal protocol which calls for appropriate action to protect the ozone layer from human activitieswas passed in year
1. 1985
2. 1986
3. 1987
4. 1988
Which one of the following is not observed in biodiversity hotspots?
1. Lesser interspecific competition
2. Species richness
3. Endemism
4. Accelerated species loss
Large Woody Vines are more commonly found in :
1. Temperate forest
2. Mangroves
3. Tropical rainforests
4. Alpine forests
The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that
1. both plant populations in this habitat decreased.
2. population B competed more successfully for food than population A.
3. population A produced more offspring than population B.
4. population A consumed the members of population B.
The shared terminal duct of the reproductive and urinary system in the human male is:
1. | Urethra | 2. | Ureter |
3. | Vas deferens | 4. | Vasa efferentia |
Toxic agents present in food which interfere with thyroxine synthesis lead to the development of
1. toxic goitre
2. cretinism
3. simple goitre
4. thyrotoxicosis
What is the genetic disorder in which an individual has an overall masculine development gynaecomastia, and is sterile?
1. Down's syndrome
2. Turner's syndrome
3. Klinefelter's syndrome
4. Edward syndrome
Which of the following statements regarding mitochondria is incorrect ?
1. Mitochondrial matrix contains single circular DNA molecule and ribosomes
2. Outer membranes is permeable to monomers of carbohydrates, fats and proteins
3. Enzymes of electron transport are embedded in outer membrane
4. Inner membrane is convoluted with infoldings
Match the following hormones with the respective disease:
(a) Insulin | (i) Addison's disease |
(b) Thyroxin | (ii) Diabetes insipidus |
(c) Corticoids | (iii) Acromegaly |
(d) Growth Hormone | (iv) Goitre |
(v) Diabetes mellitus |
Select the correct option.
(a) (b) (c) (d)
1. (ii) (iv) (i) (iii)
2. (v) (i) (ii) (iii)
3. (ii) (iv) (iii) (i)
4. (v) (iv) (i) (iii)
Select the hormone-releasing Intra-Uterine Devices:
1. Lippes Loop, Multitoad 375
2. Vaults, LNG-20
3. Multiload 375, Progestasert
4. Progestasert, LNG-20
Phloem in gymnosperms lacks:
1. Both sieve tubes and companion cells
2. Albuminous cells and sieve cells
3. Sieve tubes only
4. Companion cells only
Concanavalin A is:
1. a pigment
2. an alkaloid
3. an essential oil
4. a lectin
What is the direction of movement of sugars in phloem?
1. Bi-directional
2. Non-multidirectional
3. Upward
4. Downward
Match the following columns and select the correct option.
Column I | Column II | ||
(a) | Eosinophils | (i) | Immune response |
(b) | Basophils | (ii) | Phagocytosis |
(c) | Neutrophils | (iii) | Release histaminase, destructive enzymes |
(d) | Lymphocytes | (iv) | Release granules containing histamine |
(a) | (b) | (c) | (d) | |
1. | (iv) | (i) | (ii) | (iii) |
2. | (i) | (ii) | (iv) | (iii) |
3. | (ii) | (i) | (iii) | (iv) |
4. | (iii) | (iv) | (ii) | (i) |
Dissolution of the synaptonemal complex occurs during :
1. | Zygote | 2. | Diplotene |
3. | Leptotene | 4. | Pachytene |
If the head of cockroach is removed, it may live for few days because:
1. The cockroach does not have a nervous system.
2. The head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body.
3. The head holds a third of the nervous system while the rest is situated along the dorsal part of its body.
4. The supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.
Presence of which of the following conditions in urine are indicative of Diabetes Mellitus:
1. Uremia and Renal Calculi
2. Ketonuria and Glycosuria
3. Renal Calculi and Hyperglycaemia
4. Uremia and Ketonuria
Which of the following is not an inhibitory substance governing seed dormancy?
1. Abscisic acid
2. Phenolic acid
3. Para-ascorbic acid
4. Gibberellic acid
The enzyme enterokinase helps in the conversion of
1. trypsinogen into trypsin | 2. caseinogen into casein |
3. pepsinogen into pepsin | 4. protein into polypeptides |
Identify the wrong statement with reference to the transport of oxygen.
1. | Partial pressure of CO2 can interfere with O2 binding with haemoglobin. |
2. | Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin. |
3. | Low pCO2 in alveoli favours the formation of oxyhaemoglobin. |
4. | Binding of oxygen with haemoglobin is mainly related to partial pressure of O2. |
Match the following columns and select the correct option.
Column-I | Column-II | ||
(a) | Floating Ribs | (i) | Located between second and seventh ribs |
(b) | Acromion | (ii) | Head of the humerus |
(c) | Scapula | (iii) | Clavicle |
(d) | Glenoid cavity | (iv) | Do not connect with the sternum |
(a) | (b) | (c) | (d) | |
1. | (i) | (iii) | (ii) | (iv) |
2. | (iii) | (ii) | (iv) | (i) |
3. | (iv) | (iii) | (i) | (ii) |
4. | (ii) | (iv) | (i) | (iii) |
Which of the following statements is correct?
1. Adenine pairs with thymine through one H-bond
2. Adenine pairs with thymine through three H-bonds
3. Adenine does not pair with thymine
4. Adenine pairs with thymine through two H-bonds
Match the following columns and select the correct option
Column I | Column II | ||
(a) | The organ of Corti | (i) | Connects the middle ear and pharynx |
(b) | Cochlea | (ii) | Coiled part of the labyrinth |
(c) | Eustachian tube | (iii) | Attached to the oval window |
(d) | Stapes | (iv) | Located on the basilar membrane |
(a) | (b) | (c) | (d) | |
1. | (iii) | (i) | (iv) | (ii) |
2. | (iv) | (ii) | (i) | (iii) |
3. | (i) | (ii) | (iv) | (iii) |
4. | (ii) | (iii) | (i) | (iv) |
Which of the following statements is incorrect?
1. RuBisCO is a bifunctional enzyme
2. In C4 plants, the site of RuBisCO activity is mesophyll cell
3. The substrate molecule for RuBisCO activity is a 5-carbon compound
4. RuBisCO action requires ATP and NADPH
In Glycine max, the product of biological nitrogen fixation is transported from the root nodules to other parts as:
1. Ammonia
2. Glutamate
3. Nitrates
4. Ureides
Pyruvate dehydrogenase activity during aerobic respiration requires:
1. | Calcium | 2. | Iron |
3. | Cobalt | 4. | Magnesium |