Anatomy of Plant Parts MCQ (Multiple Choice Questions and Answers)
Q1. When secondary growth occurs, girth of stem increase, Cambial ring increase in diameter due to
- Periclinal division and radial elongation of cambial cells
- Anticlinal division and radial elongation of cambial cells
- Both periclinal and anticlinal division and radial elongation of cambial cells
- Radial elongation of cambial cells alone
Answer: 2
Q2. Interfascicular cambium is situated
- Between xylem and phloem
- Between vascular bundles
- Outside the vascular bundles
- Inner side of the vascular bundles
Answer: 2
Q3. Inter-fascicular cambium is formed the cells of
- Cortex
- Pith
- Pericycle
- Medullary rays
Answer: 4
Q4. Bulliform or motor cells are present on
- Root
- Stem
- Isobilateral leaf
- Dorsiventral leaf
Answer: 3
Q5. Bulliform cells differ from other cells in bing
- Large, thin walled, vacuolated containing water
- Large, thick walled, contain abundant chloroplasts
- Small, thick walled, contain starch
- Small, thin-walled, contain calcium oxalate
Answer: 1
Q6. The formation of annual rings in dicot stems mainly depends upon difference in
- Formation of unequal quantities of xylem and phloem
- Activity of vascular cambium due to seasonal variations
- Activity of cork cambium due to seasonal variations
- Formation of unequal quantities of sapwood and heart wood
Answer: 2
Q7. Each annual ring or growth ring consists of two strips of
- Autumn wood and spring wood
- Heart wood and sap wood
- Xylem and phloem
- Cork and cortex
Answer: 1
Q8. In the veins of leaves, the phloem is situated towards
- Upper epidermis
- Lower epidermis
- All around the xylem
- Lateral to xylem
Answer: 2
Q9. In spring (rainy summer), the activity of vascular cambium is
- More
- Less
- Normal
- None of the above
Answer: 1
Q10. Alternate name of heart wood is
- Duramen
- Alburnum
- Primary xylem
- Spring wood
Answer: 1
Q11. Heart wood is
- Outer part of secondary xylem
- Inner part of secondary xylem
- Outer part of secondary phloem
- Inner part of secondary phloem
Answer: 2
Q12. The wood of commerce is
- Sap-wood (laburnum)
- Heart wood (duramen)
- Spring wood
- Autumn wood
Answer: 2
Q13. The endarch condition is characteristic of
- Root
- Stem
- Leaves
- Petiole
Answer: 2
Q14. Dicot root differs from monocot root in
- Fewer number of radial vascular bundles with small pith
- Large number of radial vascular bundles with large pith
- Fewer number of radial vascular bundles with large pith
- Large number of radial vascular bundles with small pith
Answer: 1
Q15. Multiseriate vascular rays are present opposite the protoxylem in old
- Dicot stems
- Dicot roots
- Monocot stems
- Monocot roots
Answer: 2
Q16. Passage cells are present in
- Cortex
- Pericycle
- Pith
- Endodermis
Answer: 4
Q17. Which one of the following has dead cells
- Collenchymas
- Chlorenchyma
- Periderm
- Endodermis
Answer: 3
Q18. The outer cellular complex present on the outside of those stems and roots which have undergone secondary growth is
- Periderm
- Epiblema
- Phelloderm
- Phellogen
Answer: 1
Q19. Pericycle that gives rise to lateral roots is made of
- Meristematic cells
- Parenchyma cells
- Collenchymas cells
- Lateral meristem
Answer: 2
Q20. Pith and cortex of the stem are parts of
- Dermal tissue system
- Vascular tissue system
- Ground tissue system
- Epidermal tissue system
Answer: 3
Q21. Age cannot be determined by containing rings in the trees of
- Temperate deciduous forests
- Temperate evergreen forests
- Tropical deciduous forests
- Tropical evergreen forests
Answer: 4
Q22. Central resin-clogged secondary xylem is
- Central wood
- Heart wood
- Alburnum
- Hardwood
Answer : 2
Q23. A vascular bundle having both xylem and phloem is
- Concentric
- Collateral
- Radial
- Conjoint
Answer : 4
Q24. Primary stem is
- Main stem
- Stem having distinct nodes
- Stem having only primary tissues
- Stem having branches
Answer : 3
Q25. Oldest part of phloem in a dicot stem is situated just
- Outside vascular cambium
- Inner to primary cortex
- Inner to vascular cambium
- Between periderm and primary cortex
Answer : 2
Q26. Inner-most layer of cortex is
- Pericycle
- Endodermis
- Cutinized
- Suberised
Answer : 2
Q27. Ground tissue having differentiated concentric layers is found in
- Dicot leaf
- Monocot leaf
- Dicot stem
- Monocot stem
Answer : 3
Q28. Cortex lies between
- Epidermis and endodermis
- Endodermis and pith
- Hypodermis and endodermis
- Epidermis and stele
Answer : 4
Q29. Starch sheath is
- Endodermis of stem
- Outer cortex
- Storage cortex
- Covering of vascular bundle
Answer : 1
Q30. Endodermis is not differentiated in
- Monocot root
- Dicot root
- Monocot stem
- Dicot stem
Answer : 3
Q31. Fibrovascular bundles or vascular bundles covered by sclerenchymatous sheath are found in
- Monocot leaf
- Monocot stem
- Monocot root
- Dicot stem
Answer : 2
Q32. A T.S. of dicot stem shows
- Vascular bundles arranged in a ring
- Scattered vascular bundles
- Closed vascular bundles
- Radial vascular bundles
Answer : 1
Q33. Open vascular bundles are called so because
- They possess protoxylem towards the pith
- There is no cambium
- A cambium is present between phloem and xylem
- Phloem is found on both outer and inner sides of xylem
Answer : 3
Q34. Number of cambial strips in a vascular bundle of Cucurbita stem is
- 1
- 2
- 3
- 4
Answer : 2
Q35. Secondary growth is the production of
- New tissue from intercalary meristem
- New conducting cells
- New tissue from lateral meristem
- New ground cells
Answer : 3
Q36. Xylem and phloem occurring on the same radius constitute a vascular bundle called
- Radial
- Conjoint
- Collateral
- Bicollateral
Answer : 3
Q37. In stem, cork cambium originates from some
- Outer cells of cortex
- Fascicular and interfascicular cambium
- Inner cells of cortex
- Endodermis
Answer : 1
Q38. Complementary cells of lenticels develop from
- Phellem
- Phelloderm
- Endodermis
- Phellogen
Answer : 4
Q39. Complementary cells of lenticels are
- Compact and suberised
- Loose and suberised
- Compact and lignified
- Loose and lignified
Answer : 2
Q40. Many grass leaves are capable of folding and unfolding due to
- Parallel veins
- Isobilateral
- Thin lamina
- Bulliform cells
Answer : 4
Q41. Cucurbita stem is an exceptional dicot stem because it has
- Bicollateral bundles
- Bicollateral bundles have and several layered thick pericycle
- Bicollateral bundles and hollow centre
- Bicolateral bundles arranged in two alternate rings
Answer : 4
Q42. Vascular bundles possess prominent sclerenchymatous sheaths in
- Monocot stem
- Dicot stem
- Monocot root
- Dicot root
Answer : 1
Q43. Major function of cortex is
- Conduction of water
- Storage of water
- Storage of food
- Strength
Answer : 3
Q44. A dorsiventral leaf has
- Palisade tissue on both sides
- Spongy tissue on both sides
- Palisade tissue on upper side and spongy tissue on lower side
- Spongy tissue on upper side and palisade tissue on lower side
Answer : 3
Q45. In autumn, cambium is
- Inactive
- Less active
- More active
- Killed
Answer : 2
Q46. Annual rings can be useful for indicating age of the tree
- Dicot of equatorial region
- Monocot of equatorial region
- Dicot of temperate region
- Monocot of temperate area
Answer : 3
Q47. In most cases lower leaf epidermis can be more easily peeled as compared to upper epidermis because
- Lower epidermis has fewer stomata
- Lower epidermis has more stomata
- Upper epidermis has fewer stomata
- Upper epidermis has more stomata
Answer : 2
Q48. Autumn wood is distinguishable from spring wood in having
- Narrow tracheary elements
- Broader tracheary elements
- Lighter colour
- Cambium
Answer : 1
Q49. Vascular strand having numerous scattered fibrovascular bundles is
- Eustele
- Atactostale
- Polycyclic stele
- Dictyostele
Answer : 2
Q50. A cavity present in vascular bundles of Maize is formed by
- Degeneration of xylem parenchyma
- Replacement of phloem parenchyma
- Disruption of protoxylem
- Dissolution of cells between metaxylem vessels
Answer : 3