Title 06. ANATOMY OF FLOWERING PLANTS.pdf ✅

(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