Biology 1 - Section A
1. Consider the two statements:
I. Platyhelminthes are restricted to environments where dehydration is unlikely.
II. They are dorso-ventrally flattened.
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. Only I is correct
4. Both I and II are incorrect
2. Match each item in Column I with one in Column II and select the correct match from the codes given:
Column I
[Phyllotaxy] |
Column II
[Example] |
A. Alternate |
P. Alstonia |
B. Opposite |
Q. Calotropis and Guava |
C. Whorled |
R. China rose, Mustard and Sunflower |
Codes:
|
A |
B |
C |
1. |
P |
Q |
R |
2. |
P |
R |
Q |
3. |
R |
Q |
P |
4. |
Q |
P |
R |
3. In numerical taxonomy:
I. computers are used and all the observable characters are taken into consideration.
II. hundreds of characters can be considered together and each character is given equal importance.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. both I and II are incorrect
4. Monkey, gorilla, gibbon, tiger, cat and dog do not belong to the same:
1. |
Phylum |
2. |
Order |
3. |
Class |
4. |
Kingdom |
5. The chief producers in the oceans are:
1. |
Floating hydrophytes |
2. |
Blue green algae |
3. |
Desmids |
4. |
Diatoms |
6. Consider the following two statements:
I. The spread of living pteridophytes is restricted to narrow geographical regions
II. They are the first terrestrial plants to possess vascular tissues
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 true but II is false
4. I is false but II is true
7. Both Archaebacteria and Eubacteria:
I. have a similar structure of cell wall
II. are members of Kingdom Monera
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
8. Contagium vivum fluidum was proposed by
1. D. J. Ivanowsky |
2. M. W. Beijerinek |
3. Stanley |
4. Robert Hooke |
9. Pneumatophores are found in plants growing in:
1. Xeric conditions |
2. Swampy areas |
3. Hypersaline environments |
4. Permafrost conditions |
10. The diagram shows an organism with the following features:
I. Presence of comb plates on the surface.
II. Bioluminescence
This animal can be:
1. A sponge |
2. A Cnidarian |
3. A Ctenophore |
4. A flatworm |
11. Identify the incorrectly matched pair:
|
Biological name |
Common name |
1. |
Aptenodytes |
Penguin |
2. |
Pavo |
Peacock |
3. |
Struthio |
Pigeon |
4. |
Psittacula |
Parrot |
12. Which of the following statements would be true for brown algae?
1. |
Major pigments are chlorophyll a, c and fucoxanthin. |
2. |
Food is stored as floridean starch. |
3. |
Vegetative cells have wall made of cellulose, pectin and polysulphate esters. |
4. |
Flagellar number and insertions are 2, equal and apical. |
13. Which of the following is not an Echinoderm?
1. |
Sea Urchin |
2. |
Sea lily |
3. |
Brittle star |
4. |
Brain coral |
14. Alternaria, Colletotrichum and Trichoderma belong to the class:
1. Phycomycetes |
2. Ascomycetes |
3. Basidiomycetes |
4. Deuteromycetes |
15. Female sex organs of gymnosperms are called:
1. |
Archegonia |
2. |
Female strobili |
3. |
Megasporangium |
4. |
Megasporophyll |
16. The saprophytic protists are:
1. Slime moulds |
2. Protozoans |
3. Desmids |
4. Dinoflagellates |
17. The branch of biology that deals with the relationships of different groups of organisms and examines their natural variation and relationships is known as:
1. |
Cladistics |
2. |
Systematics |
3. |
Taxonomy |
4. |
Identification |
Biology 1 - Section B
18. In a dicot stem, the pericycle is present on the inner side of the endodermis and:
1. above the phloem, in form of semi-lunar patches of sclerenchyma
2. above the xylem, in form of semi-lunar patches of sclerenchyma
3. above the phloem, in form of semi-lunar patches of collenchyma
4. above the xylem, in form of semi-lunar patches of collenchyma
19. The placentation shown below will be seen in:
1. |
Argemone |
2. |
Dianthus |
3. |
Tomato |
4. |
Sunflower |
20. In most woody trees, the exchange of gases between the outer atmosphere and the internal tissue of the stem is facilitated by:
1. Bulliform cells
2. Hydathodes
3. Lenticels
4. Albuminous cells
21. Consider the following two statements:
Statement I: ‘Tissue’ is a level of biological organization between cells and a complete organ.
Statement II: A tissue is a group of cells having a common origin and usually performing a common function.
1. Statement I is correct and Statement II is incorrect
2. Statement I is Statement II are correct
3. Statement I is Statement II are incorrect
4. Statement I is incorrect and Statement II is correct
22. Which of the following plants of Family Fabaceae is an important source of fodder?
1. Indigofera
2. Sesbania
3. Muliathi
4. Sunhemp
23. In the given diagram of structure of a monocotyledonous seed,
1. A represents the fused testa and tegmen
2. B secretes enzymes for hydrolysis of stored nutrients
3. C is the single cotyledon seen in the seed
4. D is the covering of the embryonic root
24. The ‘stele’ in a dicot root will include all the following except:
1. Endodermis
2. Pericyle
3. Vascular bundles
4. Pith
25. Gymnosperms lack:
I. vessels in their xylem
II. sieve tubes and companion cells
III. secondary growth
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II, and III
Biology 2 - Section A
26. If we consider the average composition of cells the correct descending order of the components will be:
1. Proteins → Nucleic acids → Carbohydrates → Lipids
2. Proteins → Carbohydrates → Nucleic acids → Lipids
3. Lipids → Carbohydrates → Nucleic acids → Proteins
4. Carbohydrates → Proteins → Lipids → Nucleic acids
27. Cell is the fundamental structural and functional unit of all living organisms. This statement can be best justified by the fact that:
1. The cells contain nucleic acids that contain genetic information
2. A large number of organelles present in the cell perform various functions
3. Anything less than a complete structure of a cell does not ensure independent living
4. All multi-cellular organisms begin their life as a single celled zygote
28. The cell junctions in animal tissues that perform the function of cementing to keep neighbouring cells together are known as:
1. Tight junctions
2. Adhering junctions
3. Gap junctions
4. Desmosomes
29. Which of the following is not an aromatic amino acid?
1. Phenylalanine |
2. Threonine |
3. Tyrosine |
4. Tryptophan |
30. 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
31. Identify the incorrectly matched pair:
|
Type of epithelium |
Location |
1. |
Simple squamous |
Blood vessels and alveoli |
2. |
Simple cuboidal non brush bordered epithelium |
Proximal convoluted tubule |
3. |
Columnar epithelium |
Stomach and small intestine |
4. |
Ciliated epithelium |
Bronchioles and fallopian tubes |
32. Which of the following is absent in almost all plant cells?
1. |
Plastid |
2. |
Cell wall |
3. |
A large central vacuole |
4. |
Centriole |
33. The endo-membrane system of a eukaryotic cell includes:
1. |
Lysosomes |
2. |
Peroxisomes |
3. |
Mitochondria |
4. |
Chloroplasts |
34. Identify the correct statements regarding the structures shown in the given diagram.
I: A is the transverse section of the axoneme of a flagellum showing 9 + 2 arrangement of the microtubules.
II: B is the basal body that has an ultrastructure identical to centriole.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
35. Given below is the structure of a lipid. The excess of this compound in human blood can lead to:
1. Alzheimer’s disease |
2. Phenylketonuria |
3. Atherosclerosis |
4. Rheumatoid arthritis |
36. Which of the following organelles in a eukaryotic cell can only be seen after staining with vital dye?
1. Mitochondria |
2. Chloroplasts |
3. Nucleus |
4. Endoplasmic reticulum |
37. Identify the correct statement regarding the cell envelope of a prokaryotic cell:
I. The outermost layer of the cell envelope is called as the glycocalyx which may be present as a loose sheath called the slime layer or a thick and tough capsule.
II. The cell wall determines the shape of the cell and provides a strong structural support to prevent the bacterium from bursting or collapsing.
III. Plasma membrane is selectively permeable in nature and interacts with the outside world.
IV. Bacterial cells can be classified as Gram positive and Gram negative based on the staining properties of their plasma membrane.
1. |
All except IV |
2. |
Only I and II |
3. |
I, II, III and IV |
4. |
Only II, III and IV |
38. Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): |
Frogs are at their most vulnerable to predators when they are undergoing metamorphosis. |
Reason (R): |
At this time, the tail is being lost and locomotion by means of limbs is only just becoming established. |
In the light of the above statements choose the correct answer from the options given below:
1. |
Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. |
Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. |
(A) is True but (R) is False. |
4. |
(A) is False but (R) is True. |
39. In the given diagrammatic representation of internal organs of a frog showing the complete digestive system, identify I, II, III, IV:
|
I |
II |
III |
IV |
1. |
Oesophagus |
Liver |
Gall bladder |
Fat bodies |
2. |
Pharynx |
Liver |
Gall bladder |
Urecose glands |
3. |
Buccal cavity |
Gall bladder |
Liver |
Antennal glands |
4. |
Oesophagus |
Gall bladder |
Liver |
Fat bodies |
40. The given figure represents structure of glycogen/amylopectin. Identify A, B, C and D:
|
A |
B |
C |
D |
1. |
Reducing end |
Non reducing end |
α [1→4] linkage |
α [1→6] linkage |
2. |
Non reducing end |
Reducing end |
α [1→4] linkage |
α [1→6] linkage |
3. |
Reducing end |
Non reducing end |
α [1→6] linkage |
α [1→4] linkage |
4. |
Non reducing end |
Reducing end |
α [1→6] linkage |
α [1→4] linkage |
41. Which of the following is not an example of a secondary metabolite produced in living organisms?
1. |
Lecithin |
2. |
Alkaloids |
3. |
Flavonoids |
4. |
Antibiotics |
42. Identify the incorrect statement:
I. Nuclear envelope consists of two parallel membranes with a perinuclear space between them.
II. Nuclear pore is formed by the fusion of two nuclear membranes at points where they interrupt the nuclear envelope.
III. Large and more numerous nucleoli are present in the cells actively carrying out protein synthesis.
1. Only I |
2. Only II |
3. Only III |
4. None |
Biology 2 - Section B
43. Consider the following two statements regarding enzyme action:
I. Co-factors play a crucial role in the catalytic activity of the enzyme.
II. Catalytic activity is reduced when the co-factor is removed from the enzyme.
Of the above 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
44. The nitrogenous base shown in the given figure is:
1. Adenine
2. Guanine
3. Cytosine
4. Thymine
45. The cell expected to go through the events of cell cycle in the least amount of time would be:
1. Epithelial cell in humans |
2. Neuron in humans |
3. Yeast cell |
4. Escherichia coli |
46. Identify the correct statements:
I. The level of protein structure organization that provides the positional information of amino acids in a protein is called as the primary structure.
II. Only right handed helices are observed in proteins seen in living organisms.
III. Tertiary structure is absolutely necessary for the many biological activities of proteins.
1. Only I and II |
2. Only I and III |
3. Only II and III |
4. I, II and III |
47. The diagram shows the various phases of cell cycle in a typical eukaryotic cell. Identify the correct match:
I |
A-Interphase; B-G1 phase; C-S phase; D-G2 phase |
II |
P-Prophase; Q- Anaphase; R-Metaphase; S- Diakinesis |
III |
X-Karyokinesis; Y- Cytokinesis |
1. Only III |
2. Only I and III |
3. Only II |
4. I, II and III |
48. During meiosis, the bivalent chromosomes clearly appear as tetrads first at:
1. |
Zygotene of Prophase I |
2. |
Pachytene of Prophase I |
3. |
Metaphase I |
4. |
Anaphase I |
49. The centrosome duplicates during:
1. Early Prophase |
2. Late Prophase |
3. S phase |
4. G2 phase |
50. Identify the stage of mitosis shown in the given diagram:
1. Prophase |
2. Metaphase |
3. Anaphase |
4. Telophase |
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