Education Telugu 21-01-2018

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 21,  2019 - 

Lenticels are mainly involved in.. BIOLOGY 1. A major characteristic of monocot root is the presence of 1) vasculature without cambium 2) cambium sandwiched between phloem and xylem along the radius 3) open vascular bundles 4) scattered vascular bundles 2. Vascular bundles in monocotyledons are considered closed because 1) there no vessels with perforations 2) xylem is surrounded all around by phloem 3) a bundle sheath surrounds each bundle 4) cambium is absent 3. Read the different components from (i) to (iv) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem. i) Secondary cortex ii) Wood iii) Secondary phloem iv) Phellem The correct order is 1) iv, i, iii, ii 2) iv, iii, i, ii 3) iii, iv, ii, i 4) i, ii, iv, iii 4. Tracheids differ from other tracheary elements in 1) having casparian strips 2) being imperforate 3) lacking nucleus 4) being liquified 5. Lenticels are mainly involved in 1) food transport 2) photosynthesis 3) transpiration 4) gaseous exchange 6. Interfascicular cambium develops from the cells of 1) endodermis 2) pericycle 3) transpiration 4) xylem parenchyma 7. Companion cells are closely associated with 1) sieve elements 2) vessel elements 3) trichomes 4) guard cells 8. Water containing cavities in vascular bundles are found in 1) sunflower 2) maize 3) cycas 4) pinus 9. As compared to a dicot root, a monocot root has 1) more abundant secondary xylem 2) many xylem bundles 3) inconspicuous annual rings 4) relatively thicker periderm 10. Ground tissue includes 1) all tissues external to endodermis 2) all tissues except epidermis and vascular bundles 3) epidermis and cortex 4) all tissues internal to endodermis 11. The cork cambium, cork and secondary cortex are collectively called 1) phelloderm 2) phellogen 3) periderm 4) phellem 12. The function of companion cells is to 1) provide energy to sieve elements for active transport 2) provide water to phloem 3) load sucrose into sieve elements by passive transport 4) load sucrose into sieve elements by active transport 13. Some vascular bundles are described as open because these 1) are surrounded by pericycle but no endodermis 2) are capable of producing secondary xylem and phloem 3) possess conjunctive tissue between xylem and phloem 4) are not surrounded by pericycle

14. Palisade parenchyma is absent in leaves of 1) mustard 2) soya bean 3) gram 4) sorghum 15. In barley stem, vascular bundles are 1) closed and scattered 2) open and in a ring 3) closed and radial 4) open and scattered 16. Passage cells are thin – walled cells found in 1) phloem elements that serve as entry points for substance for transport to other 2) testa of seeds to enable emergence of growing embryonic axis during seed germination 3) central region of style through which the pollen tube grows towards the ovary 4) endodermis of roots NEET facilitating rapid Special transport of water from cortex to pericycle 17. (A): No secondary growth takes place in monocots (R): Secondary growth is not related with cambium 1) both(A) and (R) are true, and (R) is the correct explanation of (A). 2) both (A) and (R) are true, and (R) is not the correct explanation of (A). 3) (A) is true (R) is false 4) both (A) and (R) are false 18. Sclerenchyma usually _ _ _ _ and _ _ _ _ protoplasts. 1) live, without 2) dead, with 3) live, with 4) dead, without 19. Which of the following statements is/are true? a) Uneven thickening of cell wall is characteristic of sclerenchyma. b) Periblem forms cortex of the stem and the root c) Tracheids are the chief water transporting elements in gymnosperms. d) Companion cell is devoid of nucleus at maturity e) The commercial cork is obtained from Quercus suber. 1) a and d only 2) b and e only 3) c and d only 4) b, c and e only 20. (A) : Vessels are more efficient for water conduction as compared to tracheids (R): Vessels are dead lignified. 1) both(A) and (R) are true, and (R) is the correct explanation of (A). 2) both (A) and (R) are true, and (R) is not the correct explanation of (A). 3) (A) is true (R) is false 4) both (A) and (R) are false 21. Study the following lists ............... LIST – I LIST – II 1) Primary meristem I. Interfascicular cambium 2) Secondary meristem II. Intercalary meristem 3) Apical meristem III. Shoot apex 4) Lateral meristem IV. Intra fascicular cambium V. Phellogen The correct match is A B C D 1) V II IV I 2) IV III V II 3) IV V III I 4) I IV III V 22. Study the following lists

LIST – I LIST – II 1) Bean shaped guard cell I. Adaxial tissue 2) Trichomes II. Dicot leaf 3) Bulliform cells III. Abaxial tissue 4) Palisade parenchyma IV. Monocot leaf V. Stem epidermis The correct match is A B C D 1) II IV I V 2) II I IV V 3) II III IV I 4) II V IV I 23. Study the following lists LIST – I LIST – II 1) Bast I. Periderm + bast 2) Phelloderm II. Dead impervious tissue 3) Bark III. Secondary phloem 4) Cork IV. Lignified tissue V. Secondary cortex The correct match is A B C D 1) III I V II 2) III V I II 3) II I IV III 4) IV II III I 24. Study the following lists LIST – I LIST – II 1) Heart wood I. Tannins 2) Spring wood II. Conduction 3) Sap wood III. Large xylem vessels 4) Autumn wood IV. Cork cambium V. Narrow xylem vessels The correct match is A B C D 1) I II III V 2) II III I IV 3) I III II V 4) I V IV II 25. Study the following lists LIST – I LIST – II 1) Epidermis I. Lateral roots 2) Endodermis II. Secondary cambium 3) Pericycle III. Stomata 4) Conjugative tissue IV. Cuticle V. Suberized walls The correct match is A B C D 1) I II III IV 2) II III IV I 3) IV V I II 4) IV I V II 26. Study the following lists LIST – I LIST – II 1) Dicot stem I. Exarch xylem 2) Monocot leaf II. Ground tissue 3) Monocot stem III. Secondary growth 4) Dicot root IV. Collenchymatous hypodermis V. Bundle sheath The correct match is A B C D 1) IV I V III 2) IV II I V 3) IV I III V 4) IV V II III 27. Study the following lists LIST – I LIST – II 1) Autumn wood I. Hard and highly durable 2) Spring wood II. Main role in conduction 3) Heart wood III.Constitutes one annual ring 4) Spawood IV. Lighter in appearance V. Narrow xylem vessels

Nakrekanti Seenaiah Senior Faculty NEET expert Hyderabad 8008969621

The correct match is A B C D 1) V IV I II 2) II III IV I 3) V II I IV 4) III IV V I 28. Study the following lists LIST – I LIST – II 1) Complimentary cells I. Thin walled parenchyma 2) Secondary cortex II. Meristematic layer 3) Cork cambium III. Bast 4) Primary cortex IV. Lenticel V. Thick walled parenchyma The correct match is A B C D 1) IV III II I 2) I II IV V 3) IV V II I 4) II III V IV 29. Study the following lists LIST – I LIST – II 1) Discontinuous cambium rong I. Produces secondary vascular tissues 2) Complete cambium ring II. Dicot root 3) Lenticel III. Monocot root 4) Wavy cambium ring IV. Primary dicot stem V. Lens shaped The correct match is A B C D 1) IV I V II 2) IV V I II 3) III IV II V 4) V II IV III 30. Study the following lists LIST – I LIST – II 1) Tracheids I. Irregular shaped cells 2) Spongy parenchyma II. Rectangular cells 3) Sieve tubes III. Cylindrical tube like cells 4) Phloem parenchyma IV. Elongated cells with tapering ends V. Oval cells The correct match is A B C D 1) I IV III V 2) IV I III II 3) III I II V 4) III II I V

ANSWERS 1-1, 7-1, 13-2, 19-4, 25-3,

2-4, 8-2, 14-4, 20-2, 26-4,

3-1, 9-2, 15-1, 21-3, 27-1,

4-4, 10-2, 16-4, 22-4, 28-3,

5-4, 11-3, 17-3, 23-2, 29-1,

6-3, 12-4, 18-2, 24-3, 30-2.


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