1. Choose the correct statement.
(a) Members of Phycomycetes are facultative parasites on plants.
(b) Fusion of protoplasm between two motile or nonmotile gametes is called plasmogamy.
(c) Kingdom Plantae includes all eukaryotic chlorophyll containing organisms and non-chlorophyll organisms called plants.
(d) Trichoderma belongs to Basidiomycetes.
(e) Euglenoids include diatoms.
2. Which of the following characters belongs to the Kingdom Monera?
(a) Eukaryotic (b) Heterotrophic
(d) Presence of cell walls made of cellulose
(e) Presence of nuclear membrane
3. Match the following and choose the correct combination from the options given.
4. Of the following statements which are not relevant to archaebacteria?
A. They live in some of the most harsh habitats.
B. They are present in the gut of several ruminant animals.
C. They are characterised by the presence of a rigid cellulosic cell wall.
D. They include mycoplasma.
E. They are also referred to as blue-green algae.
(a) A, B and C (b) A, C and E
(c) C, D and E (d) A, C and D
(e) B, C and E
5. Which of the following is wrongly matched?
6. Which one of the following is used extensively in biochemical and genetic work?
(a) Saccharomyces (b) Aspergillus
(c) Claviceps (d) Penicillium
7. Match Column I with Column II and choose the right option.
9. In one plant, underground stems are modified to store food and in another plant, the stem tendrils develop from axillary buds to help plants climb. They are (a) ginger, cucumber (b) carrot, jasmine
(c) sweet potato, Bougainvillea
(d) Opuntia, Eichhornia
(e) sweet potato, mint.
10. Consider the following statements.
A. In leguminous plants, leaf base becomes swollen, called pulvinus.
B. The fleshy leaves of onion and garlic store food.
C. The buds in Australian Acacia tree become green and synthesise food.
D. In Alstonia, leaves show alternate phyllotaxy.
Of the above statements
(a) B and D are correct (b) A and C are correct
(c) A and B are correct (d) A and D are correct
(e) B and C are correct.
11. Pick out the statement that does not apply to bryophytes.
(a) Include the ferns and horsetails.
(b) Thallus is a gametophyte.
(c) Sporophyte shows foot, seta and capsule.
(d) Gemmae help in reproduction.
(e) Water is required for fertilisation.
12. Which one of the following is considered important in the development of seed habit?
(c) Dependent sporophyte
(d) Free living gametophyte
(e) Haplontic life cycle
13. Which of the following is a characteristic feature of gymnosperms?
(a) The gymnosperms are homosporous.
(b) The male and female gametophytes do not have independent free living existence.
(c) The sporophyte is dependent on the gametophyte.
(d) The ovules are enclosed by the ovary.
(e) The pollen grain is released from the megasporangium.
14. Consider the following statements with respect to angiosperms.
A. The male sex organ in a flower is the stamen.
B. The anthers following mitosis produce pollen grains.
C. In an embryosac, the primary endosperm nucleus (PEN) is diploid.
D. After double fertilisation the ovules develop into seeds and ovaries develop into fruit. Of the above statements
(a) C and D are correct (b) A and B are correct (c) A and C are correct (d) A and D are correct
(e) B and C are correct.
15. Select the wrong statement.
(a) Indigofera is used as a dye.
(b) Ashwagandha is a medicinal plant.
(c) Seeds are non-endospermous in Fabaceae.
(d) Leaves are alternate, simple and exstipulate in Solanaceae.
(e) Ovary superior, bicarpellary with ovules on axile placentation in Liliaceae
16. Which of these is an example for a zygomorphic flower with diadelphous stamens and marginal placentation?
(a) Pea (b) Lemon
(c) Brinjal (d) Cucumber
(e) China rose
17. Select the wrongly matched pair
18. Match the modification in Column I with the part modified in Column II and choose the right option.
19. Select the characters which are not applicable to the anatomy of dicot roots?
A. Conjunctive tissue present
B. Presence of protein compounds in the casparian strips
C. Polyarch xylem bundles
D. Presence of pericycle
(a) A and B (b) B and D
(c) C and D (d) A and D
(e) B and C
20. Lenticels are involved in
(a) photosynthesis (b) food transport
(c) conduction of water (d) transpiration
(e) gaseous exchange
21. Match the following
22. Pick out the wrong statement.
(a) Gymnosperms lack vessels in their xylem.
(b) The cell wall of parenchyma is made up of pectin.
(c) The first formed primary xylem elements are called protoxylem.
(d) Gymnosperms have albuminous cells and have sieve cells in their phloem.
(e) Intercellular spaces are absent in collenchyma.
23. (i) They help in respiration.
(ii) They help in cell wall formation.
(iii) They help in DNA replication.
(iv) They increase surface area of plasma membrane.
Which of the following prokaryotic structures has all the above roles?
(a) Chromosome (b) Ribosome
(c) Mesosome (d) Lysosome
24. Match the Column I with that of Column II and choose the correct combination from the options given.
26. The given organic compound is a diagrammatic representation of
27. Which one of the following is the significance of mitosis?
(a) Restricted to haploid cells
(b) Cell repair
(c) Increases the genetic variability
(d) Recombination of chromosomes
(e) Leads to evolution of new genotypes
28. Which of the following statements about the structure of proteins is true?
(a) The sequence of amino acids in a protein represents the secondary structure.
(b) The helices of proteins are always left handed.
(c) Adult human haemoglobin consists of two subunits.
(d) The left end of a protein is called the C-terminal and the right end is called the N-terminal.
(e) Proteins are heteropolymers containing strings of amino acids.
29. In a typical eukaryotic cell cycle, Gap 1, Synthesis and Gap 2 are the three phases included in the
(a) prophase (b) metaphase
(c) anaphase (d) interphase
30. Find out the correct statement.
(a) During mitosis endoplasmic reticulum and nucleolus disappear completely at early prophase.
(b) Chromosomes are arranged along the equator during prophase of mitosis.
(c) Chromosome is made up of two sister chromatids at anaphase of mitosis.
(d) A cell plate is laid down during interphase.
(e) Small disc shaped structures at the surface of the centromeres that appear during metaphase are kinetochores.
31. Which of the following secondary metabolites belong to the group drugs?
I. Morphine II. Curcumin
III. Codeine IV. Vinblastin
(a) I and II only (b) I and V only
(c) II and III only (d) II and IV only
(e) III and IV only
32. Which of the following statements about the mass flow hypothesis is wrong?
(a) It is the accepted mechanism for translocation of sugars from source to sink.
(b) As glucose is prepared at source it is converted to sucrose.
(c) Sucrose is actively loaded into a sieve tube.
(d) The process of loading at source produes a hypotonic condition in the phloem.
(e) Water in the adjacent xylem moves into the phloem by osmosis.
33. Pick out the wrong statement.
A. Apoplast is the system of adjacent cell walls that is continuous throughout the plant.
B. Endodermis is impervious to water molecules.
C. Pinus seeds germinate and establish without the presence of mycorrhizae.
(a) A and B (b) B and C
(c) C only (d) B only
(e) A only
34. 3-phosphoglyceric acid (PGA) as the first CO2 fixation product in algal photosynthesis was discovered by
(a) Joseph Priestley (b) Jan Ingenhousz
(c) T.W. Engelmann (d) Julius von Sachs
(e) Melvin Calvin.
35. Match the following.
36. Match the following and choose the correct option.
A. Water potential (i) It is usually positive
B. Solute potential (ii) It is zero for pure water
C. Pressure potential (iii) It is always negative
(a) A – (ii), B – (iii), C – (i)
(b) A – (i), B – (iii), C – (ii)
(c) A – (iii), B – (ii), C – (i)
(d) A – (ii), B – (i), C – (iii)
(e) A – (iii), B – (i), C – (ii)
37. Which of the following statements about plasmolysis is/are true?
I. Plasmolysis occurs when water moves into the cell. II. Cells shrink in hypotonic solutions.
III. If the external solution balances the osmotic pressure of the cytoplasm, it is said to be isotonic.
(a) I only (b) II only
(c) III only (d) I and II only
(e) II and III only
38. FAD is electron acceptor in the citric acid cycle during the oxidation of
(a) malic acid to oxaloacetic acid
(b) succinic acid to malic acid
(c) citric acid to alpha-ketoglutaric acid
(d) alpha-ketoglutaric acid to succinic acid
(e) oxaloacetic acid to citric acid.
39. Maximum absorption of light by chlorophyll a occurs in which regions of the absorption spectrum?
A. Blue B. Red
C. Green D. Yellow
(a) A and B only (b) B and C only
(c) A and D only (d) B and D only
(e) C and D only
40. Match the Column I with that of Column II and choose the correct combination from the options given.
41. In which one of the following reactions of glycolysis, oxidation takes place?
(a) Glucose 6-phosphate to fructose 6-phosphate
(b) Fructose 6-phosphate to fructose 1,6-bisphosphate
(c) 1,3-bisphosphoglycerate to 3-phosphoglyceric acid
(d) 3-phosphoglyceraldehyde to 1,3-biphosphoglycerate
(e) 2-phosphoglycerate to phosphoenol pyruvate
42. Cyclic-photophoshorylation results in the formation of
(a) NADPH + H+ (b) ATP and NADPH + H+
(c) ADP (d) ATP
(e) ADP and NADP.
43. Select the correctly matched pair.
(a) C. Darwin and S.F. Darwin – Gibberellic acid
(b) F.W. Went – Auxin
(c) E. Kurosawa – Ethylene
(d) Skoog and Miller – Abscisic acid
(e) Cousins – Cytokinin
44. One hormone stimulates the closure of stomata and another one influences the swelling of the axis in dicot plants. They are
(a) gibberellins and ethylene (b) abscisic acid and cytokinins
(c) gibberellins and cytokinins
(d) auxin and cytokinins
(e) abscisic acid and ethylene.
45. Which of the following statements regarding photoperiodism is false?
(a) The response of plants to periods of light/day is termed photoperiodism. (b) The shoot apices cannot perceive photoperiods.
(c) In day neutral plants there is no correlation between exposure to light duration and induction of flowering response.
(d) Shoot apices modify themselves into flowering apices prior to flowering.
(e) The site of perception of the light/dark duration is the flower.
46. The residual persistent nucellus in the seed of black pepper and beet is called
(a) perisperm (b) endosperm
(c) pericarp (c) scutellum
47. Consider the following statements with respect to flowering plants.
A. The pollen grains represent the male gametes.
B. The functional megaspore develops into the embryo sac represent the female gamete.
C. Transfer of pollen grains from anther to the stigma of different plant is known as xenogamy.
D. Transfer of pollen grains from anther to the stigma of another flower of the same plant is known as geitonogamy. Of the above statements (a) A and B alone are correct
(b) A and C alone are correct
(c) A and D alone are correct
(d) B and C alone are correct
(e) C and D alone are correct.
48. Which of the following is false in angiosperms?
(a) Egg cell – Haploid
(b) Megaspore – Diploid
(c) Pollen grain – Haploid
(d) Synergid – Haploid
(e) Endosperm – Triploid
49. Consider the following statements and choose the correct option.
A. The ovule is attached to the placenta by means of a stalk called filament.
B. The ovule fuses with the stalk in the region called hilum.
C. The two protective envelopes of ovule are called integuments.
D. The small opening in the tip of ovule is called germ pore. Of the above statements
(a) A and D are correct
(b) A and C are correct
(c) B and D are correct
(d) B and C are correct
(e) C and D are correct.
50. Who proved that blends of polyblend (plastic waste) and bitumen, when used to lay roads, enhanced the bitumen’s water repellant properties and helped to increase road life?
(a) Amrita Devi (b) Ramdeo Misra
(c) W.H. Pearsall (d) Ramesh Chandra Dagan
(e) Ahmed Khan
51.Match the following
52. The first trophic level in an ecosystem consists of
(a) primary producers (b) primary consumers
(c) secondary producers (d) secondary consumers
(e) top carnivores.
53. The following figure given below is a diagrammatic representation of organismic response to abiotic factors. What do A, B and C represent respectively?
(a) A-Conformers, B-Regulators, C-Partial regulators
(b) A-Regulators, B-Partial regulators, C-Conformers
(c) A-Partial regulators, B-Regulators, C-Conformers
(d) A-Partial regulators, B-Conformers, C-Regulators
(e) A-Conformers, B-Partial regulators, C-Regulators
54. Select the correct statement.
(a) Phosphorus cycle is an example of gaseous nutrient cycle.
(b) The pyramid of biomass in sea is generally inverted.
(c) By the process of humification, soluble inorganic nutrients go down into the soil horizon.
(d) A given organism may not occupy more than one trophic level simultaneously.
(e) Pyramid of energy is always inverted, can never be upright.
55. The rate of biomass production and the rate of production of organic matter during photosynthesis are called respectively (a) total productivity, primary production
(b) gross primary productivity, gross secondary productivity
(c) net primary productivity, secondary productivity
(d) net productivity, gross secondary productivity
(e) productivity, gross primary productivity.
56. Allen’s rule applies to
(a) tribes living in high altitudes
(b) mammals from colder climates
(c) fish living in Antarctic waters
(d) desert lizards (e) marine invertebrates
57. Pick out the correct option from (a) to (e).
A. Primary succession begins in areas where natural communities have been destroyed.
B. Hydrarch succession takes place in water.
C. The climax community is the community that is in near equilibrium with the immediate environment.
D. In newly cooled lava secondary succession occurs.
(a) A and B are correct, C and D are incorrect
(b) B and C are correct, A and D are incorrect
(c) A and D are correct, B and C are incorrect
(d) B only is correct, A, C and D are incorrect
(e) A only is correct, B, C and D are incorrect
58. Select the wrong statement.
(a) The presence of chromogenic substrate gives blue colour colonies, if the plasmid in the bacteria does not have an insert.
(b) Retroviruses in animals have the ability to transform normal cells into cancerous cells.
(c) In microinjection, cells are bombarded with high velocity microparticles of gold or tungsten coated with DNA.
(d) Since DNA is a hydrophilic molecule it cannot pass through cell membranes.
(e) DNA is a negatively charged molecule.
59. Which of the following organisms breeds only once in lifetime?
(a) Bamboo (b) Oysters
(c) Pelagic fishes (d) Birds
60. Select the wrong statement.
(a) Human insulin is being commercially produced from a transgenic species of Escherichia coli.
(b) The genetically modified Bacillus thuringiensis is used as biopesticide on the commercial scale.
(c) Human protein, alpha-1-antitrypsin is used to treat emphysema.
(d) The first transgenic cow, Rosie, produced alpha lactalbumin, enriched milk.
(e) Bt toxin genes cryIAc control the corn borer.
61. The first human-like hominid was called
(a) Homo habilis (b) Homo erectus
(c) Homo sapiens (d) Dryopithecus
62. Oparin and Haldane proposed
(a) the theory of Natural Selection
(b) that migration affects genetic equilibrium
(c) that mutations caused speciation
(d) that the first form of life could have come from preexisting non-living organic molecules (e) that evolution of life forms had been driven by use and disuse of organs.
64. Flame cells of flatworms help in
(i) osmoregulation (ii) digestion
(iii) reproduction (iv) excretion
(a) (ii) only is correct (b) (i) and (iv) are correct
(c) (iii) only is correct (d) (i) and (v) are correct
(e) (iv) and (v) are correct
65. Read the statements regarding echinoderms and choose the correct option. (i) All are marine with organ system level of organisation.
(ii) Adults are bilaterally symmetrical.
(iii) They are dioecious.
(iv) Fertilisation is internal and indirect development is observed. (v) Triploblastic and acoelomate animals.
(a) (i) and (iii) are correct (b) (v) alone is correct
(c) (i), (iii) and (v) are correct (d) (i) and (v) are correct
(e) (i) and (ii) are correct
66. Which class of animals include all ectoparasites on some fishes?
(a) Amphibia (b) Osteichthyes
(c) Reptilia (d) Cyclostomata
67.From the above table find out the missing organ or function- A, B, C, D and E respectively
(a) A-swimming, B-comb plates, C-radula, D-excretion,
(b) A-defense, B-radula, C-comb plates, D-excretion,
(c) A-defense, B-radula, C-comb plates, D-swimming,
(d) A-protection, B-parapodia, C-visceral mass,
(e) A-swimming, B-parapodia, C-comb plates,