Title 06. ANATOMY OF FLOWERING PLANTS.pdf ✅

06. ANATOMY OF FLOWERING PLANTS 1. Secondary wall is not formed in (a) Parenchyma (b) Collenchyma (c) Companion cells (d) All the above 2. Which one of the following is an effective tissue of growing organs with sufficient elasticity (a) Parenchyma (b) Collenchyma (c) Sclerenchyma (d) All the above 3. A mature sieve tube differs from vessel in (a) Being nearly dead (b) Lacking cytoplasm (c) Lacking a functional nucleus (d) Absence of lignified walls 4. Which tissue performs mechanical function in hydrophytic plants (a) Parenchyma (b) Collenchyma (c) Sclerenchyma (d) None of the above 5. In pteridophyta and gymnosperms which cells are present in place of companion cell (a) Sclereids (b) Albuminous cells (c) Idioblasts (d) None of the above 6. Wood is a common name of (a) Phloem (b) Secondary xylem (c) Cambium (d) Vascular bundles 7. Both vessels and companion cells are absent in (a) Angiosperms (b) Pteridophyta (c) Gymnosperms (d) In (b) and (c) 8. Mechanical tissue consisting of living cells is (a) Sclerenchyma (b) Collenchyma (c) Chlorenchyma (d) Parenchyma 9. Dermatogen is a tissue formed by apical meristem and gives rise to (a) Epidermis (b) Xylem (c) Phloem (d) Pith 10. Intraxyllary phloem may also be called (a) Internal phloem (b) Included phloem (c) Vestigeal phloem (d) None of the above 11. Aerenchyma is helpful in plants by (a) Giving flexibility to plants (b) Giving mechanical strength to plants (c) Promoting photosynthesis (d) Providing buoyancy in hydrophytes 12. Collenchyma tissue is characterised by (a) Elongated cells with thickening at the corners (b) Isodiametric cells with deposits of cellulose and pectin at the corners
(c) Elongated cells with deposits of cellulose and pectin all over the wall (d) Isodiametric cells with thickening all over the cell wall 13. The only plant cells without nuclei among the following are (a) Cambium cells (b) Cells of pericycle (c) Xylem parenchyma (d) Sieve tubes 14. Grass stem elongates by the activity of (a) Primary meristem (b) Secondary meristem (c) Intercalary meristem (d) Apical meristem 15. Collenchyma differs from sclerenchyma (a) Retaining protoplasm at maturity (b) Having thick walls (c) Having wide lumen (d) Being meristematic 16. Walls of sclerenchyma are (a) Rigid (b) Lignified (c) Pactinised (d) Suberised 17. Tunica corpus theory is related with (a) Root apex (b) Lateral meristems (c) Root cap (d) Shoot apex (apical meristem) 18. The baloon like outgrowth of parenchyma in the lumen of a vessel is known as (a) Histogen (b) Tyloses (c) Phellogen (d) Tunica 19. Vessels differ from tracheids (a) In being derived from single cell (b) In having vertical rows of cells with cross walls dissolved (c) In being living (d) They help in the conduction of water 20. Vascular cambium and cork cambium are examples of (a) Lateral meristem (b) Apical meristem (c) Elements of xylem and phloem (d) Intercalary meristem 21. Laticiferous vessels instead of laticiferous cells are found in (a) Ficus (b) Calotropis (c) Poppy (d) Nerium 22. Increase in length of plant axis is by (a) Apical meristem (b) Lateral meristem (c) Dermatogen (d) Periblem 23. Companion cells are usually seen associated with (a) Fibres (b) Vessels (c) Tracheids (d) Sieve tubes 24. Sieve tubes are better suited for translocation, because (a) Possess broader lumen and perforated cross walls (b) Are broader than long (c) Possess bordered pits (d) Possess no end walls
25. Collenchyma differs from parenchyma in having (a) Living protoplasm (b) Cellulose walls (c) Vacuoles (d) Pectin deposits at corners 26. Layer of cells between endodermis and vascular bundles is called (a) Epidermis (b) Pericycle (c) Hypodermis (d) Pith 27. A stele with a central core of xylem surrounded by phloem is called (a) Protostele (b) Siphonostele (c) Solenostele (d) Dictyostele 28. Secondary roots arise from (a) Pericycle (b) Sap wood (c) Endodermis (d) Hypodermis 29. Commercially important fibres of cotton are (a) Woody fibres of roots (b) Bark fibres of stem (c) Epidermal hairs of seeds (d) Phloem fibres of roots 30. A tissue with spiral thickening in the cell wall capable of absorbing water from air is known as (a) Velamen (b) Cork (c) Hypodermis (d) Epidermis 31. Vascular bundles in which phloem is found on both sides of xylem are called (In which of the following phloem occurs in two patches) (a) Collateral (b) Bicollateral (c) Radial (d) Amphicribral 32. Amphivasal or leptocentric vascular bundles are found in (a) Cycas and Dryopteris (b) Dracaena and Yucca (c) Helianthus and Cucurbita (d) Maize and wheat 33. A root hair is formed by (a) Epidermal cell (b) Endodermal cell (c) Cortical cell (d) Pericycle cell 34. The layer of cells outside the phloem meant for giving rise to the root branches is called (a) Cambium (b) Carpus (c) Endodermis (d) Pericycle 35. Epidermal outgrowths are known as (a) Stomata (b) Leaves (c) Trichomes (d) Flower buds 36. In root, pericycle gives rise to (a) Branch root and cork cambium (b) Cortex and pith (c) Epidermis and vascular bundles (d) Xylem and phloem 37. Vascular bundles in the stem of Cucurbita or Lagenaria are
(a) Collateral (b) Bicollateral (c) Radial (d) Inverted 38. Periblem gives rise to (a) Pericycle (b) Cortex (c) Medulla (d) Epidermis 39. Cuticle is secreted by (a) Epidermis (b) Endodermis (c) Both (a) and (b) (d) Hypodermis 40. Vascular bundles are derived from (originate from) (a) Dermatogen (b) Periderm (c) Endogenous tissue the procambial strand or plerome (d) Cortex 41. Adventitious roots in a dicot stem originate from (a) Radicle (b) Pericycle or interfascicular parenchyma (c) Cortex (d) None of the above 42. Bulliform or motor cells are present in (a) Dicot stem (b) Upper epidermis of dicot leaves (c) Lower epidermis of monocot leaves (d) Upper epidermis of monocot leaves 43. Water secreting glands or tissues are known as (a) Tyloses (b) Hydathodes (c) Cork (d) Phellogen 44. Vascular bundles having xylem and phloem sit at the same radius is termed as (a) Concentric (b) Radial (c) Collateral (d) Amphicribral 45. Water stomata are found in (a) Plants inhabiting humid region (b) Plants inhabiting dry regions (c) All plants (d) Plants lacking normal stomata 46. Raphides are found in (a) Cirus (b) Colocasia (c) Nerium (d) Mango 47. Raphides are (a) Starch (b) Silica (c) Calcium carbonate (d) Calcium oxalate 48. In plants like Nymphaea which is attached emerged hydrophyte, the stomata are present on (a) Adaxial (upper) surface of leaf (b) Abaxial (lower) surface of leaf (c) On both surface of leaf (d) None of the above 49. Which of the stoma wall is thick (a) Inner (b) Outer (c) Lateral (d) Upper