Anatomy of flowering plant MCQ Solved Paper for RRB JE
Thursday 9th of March 2023
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1. In land plants, the guard cells differ from other epidermal cells in having
A. cytoskeleton.
B. mitochondria.
C. endoplasmic reticulum.
D. chloroplasts.
Answer : D
A. cytoskeleton.
B. mitochondria.
C. endoplasmic reticulum.
D. chloroplasts.
Answer : D
2. Match the names of the structures given in column-I with the functions given in column-II, choose the answer which gives the correct combination of the two columns :
A. A V, B III, C I, D IV
B. A I, B IV, C V, D III
C. A II, B IV, C I, D III
D. A IV, B I, C III, D V
Answer : D
| Column-I | Column-II |
|---|---|
| (Structure) | (Function) |
| A. Stomata | I. Protection of stem |
| B. Bark | II. Plant movement |
| C. Cambium | III. Secondary growth |
| D. Cuticle | IV. Transpiration |
| V. Prevent the loss of water | ... |
A. A V, B III, C I, D IV
B. A I, B IV, C V, D III
C. A II, B IV, C I, D III
D. A IV, B I, C III, D V
Answer : D
3. Read the following statements and answer the question.
Which plant anatomy is being described by the above statements?
A. Dicotyledonous root
B. Monocotyledonous root
C. Dicotyledonous stem
D. Monocotyledonous stem
Answer : D
- It has a sclerenchymatous hypodermis, a large number of scattered vascular bundles and a large parenchymatous ground tissue.
- Vascular bundles are conjoint and closed.
- Peripheral vascular bundles are generally smaller than the centrally located ones.
- Phloem parenchyma is absent, and water- containing cavities are present within the vascular bundles.
Which plant anatomy is being described by the above statements?
A. Dicotyledonous root
B. Monocotyledonous root
C. Dicotyledonous stem
D. Monocotyledonous stem
Answer : D
4. Trees at sea do not have annual rings because
A. soil is sandy.
B. there is climatic variation.
C. there is no marked climatic variation.
D. there is enough moisture in the atmosphere.
Answer : C
A. soil is sandy.
B. there is climatic variation.
C. there is no marked climatic variation.
D. there is enough moisture in the atmosphere.
Answer : C
5. Gymnosperms are also called soft wood spermatophytes because they lack
A. cambium
B. phloem fibres
C. thick-walled tracheids
D. xylem fibres
Answer : D
A. cambium
B. phloem fibres
C. thick-walled tracheids
D. xylem fibres
Answer : D
6. Which of following helps bamboo and grasses to elongate ?
A. Apical meristems
B. Lateral meristems
C. Secondary meristems
D. Intercalary meristems
Answer : D
A. Apical meristems
B. Lateral meristems
C. Secondary meristems
D. Intercalary meristems
Answer : D
7. Which meristem helps in increasing girth?
A. Lateral meristem
B. Intercalary meristem
C. Primary meristem
D. Apical meristem
Answer : A
A. Lateral meristem
B. Intercalary meristem
C. Primary meristem
D. Apical meristem
Answer : A
8. Which of the following statement(s) is/are not correct?
A. (iii) and (iv)
B. (i) and (ii)
C. (ii) and (iii)
D. (ii) and (iv)
Answer : A
- Cork cambium is also called phellogen.
- Cork is also called phellem.
- Secondary cortex is also called periderm.
- Cork cambium, cork and secondary cortex are collectively called phelloderm.
A. (iii) and (iv)
B. (i) and (ii)
C. (ii) and (iii)
D. (ii) and (iv)
Answer : A
9. The vessel elements of angiosperms differ from other elements of xylem in having
A. simple pits on their radial walls.
B. bordered pits on their lateral walls.
C. simple and bordered pits on their end walls.
D. simple perforation on their end walls.
Answer : D
A. simple pits on their radial walls.
B. bordered pits on their lateral walls.
C. simple and bordered pits on their end walls.
D. simple perforation on their end walls.
Answer : D
10. The apical meristem of the root is present
A. in all the roots.
B. only in radicals.
C. only in tap roots.
D. only in adventitious roots.
Answer : A
A. in all the roots.
B. only in radicals.
C. only in tap roots.
D. only in adventitious roots.
Answer : A
11. Which of the following are present in monocot root ?
A. conjoint, collateral, open polyarch vascular bundle.
B. exodermis, endarch, tetrarch closed vascular bundles.
C. suberized exodermis, casparian strip, passage cells, cambium.
D. suberized exodermis, polyarch xylem, pith.
Answer : D
A. conjoint, collateral, open polyarch vascular bundle.
B. exodermis, endarch, tetrarch closed vascular bundles.
C. suberized exodermis, casparian strip, passage cells, cambium.
D. suberized exodermis, polyarch xylem, pith.
Answer : D
12. Read the following statements and answer the question.
Which type of wood is described by the above statements?
A. Sap wood
B. Heart wood
C. Spring wood
D. Autumn wood
Answer : C
- Cambium is very active and produces a large number of xylary elements having vessels with wider cavities.
- It is also called early wood.
- It is lighter in colour and has lower density.
Which type of wood is described by the above statements?
A. Sap wood
B. Heart wood
C. Spring wood
D. Autumn wood
Answer : C
13. Which of the following statements are correct ?
A. (i) and (iii)
B. (i) and (ii)
C. (iii) and (iv)
D. (i) and (iv)
Answer : B
- Xylem transports water and minerals.
- Gymnosperms lack sieve tubes and companion cells in phloem.
- The first formed primary xylem is called metaxylem.
- Phloem fibres (bast fibres) are made up of collenchymatous cells.
A. (i) and (iii)
B. (i) and (ii)
C. (iii) and (iv)
D. (i) and (iv)
Answer : B
14. Bast fibres are made up of _____________cells.
A. sclerenchymatous
B. chlorenchymatous
C. parenchymatous
D. aerenchymatous
Answer : A
A. sclerenchymatous
B. chlorenchymatous
C. parenchymatous
D. aerenchymatous
Answer : A
15. Tissue(s) present in an annual ring is/are
A. secondary xylem and phloem.
B. primary xylem and phloem.
C. secondary xylem only.
D. primary phloem and secondary xylem.
Answer : C
A. secondary xylem and phloem.
B. primary xylem and phloem.
C. secondary xylem only.
D. primary phloem and secondary xylem.
Answer : C
16. Match the followings and choose the correct option
A. A III, B IV, C I, D II
B. A I, B II, C III, D IV
C. A III, B II, C IV, D I
D. A III, B II, C I, D IV
Answer : A
| Column-I | Column-II |
|---|---|
| A. Cuticle | I. Guard cells |
| B. Bulliform cells | II. Outer layer |
| C. Stomata | III. Waxy layer |
| D. Epidermis | IV. Empty colourless cell |
A. A III, B IV, C I, D II
B. A I, B II, C III, D IV
C. A III, B II, C IV, D I
D. A III, B II, C I, D IV
Answer : A
17. A plant tissue when stained showed the presence of emicellulose and pectin in cells wall of its cells. The tissue is called
A. collenchyma
B. sclerenchyma
C. xylem
D. meristem
Answer : A
A. collenchyma
B. sclerenchyma
C. xylem
D. meristem
Answer : A
18. Main function of lenticel is
A. transpiration
B. guttation
C. gaseous exchange
D. both (a) & (c)
Answer : A
A. transpiration
B. guttation
C. gaseous exchange
D. both (a) & (c)
Answer : A
19. Which of the following is responsible for the formation of an embryonic shoot called axillary bud?
A. Lateral meristem
B. Apical meristem
C. Intercalary meristem
D. Both
Answer : C
A. Lateral meristem
B. Apical meristem
C. Intercalary meristem
D. Both
Answer : C
20. Cells of permanent tissues are specialized
A. functionally.
B. only structurally.
C. both structurally and functionally.
D. for mitosis.
Answer : C
A. functionally.
B. only structurally.
C. both structurally and functionally.
D. for mitosis.
Answer : C
21. When we peel the skin of a potato tuber, we remove
A. periderm
B. epidermis
C. cuticle
D. leaves
Answer : A
A. periderm
B. epidermis
C. cuticle
D. leaves
Answer : A
22. A vascular bundle in which the protoxylem is pointing to the periphery is called __________.
A. endarch
B. exarch
C. radial
D. closed
Answer : B
A. endarch
B. exarch
C. radial
D. closed
Answer : B
23. Match column-I with column-II and choose the correct option.
Which of the following combination is correct ?
A. A II, IV, VII, VIII; B I, III, V, VI
B. A I, II, VII, VIII; B III, IV, V, VI
C. A I, III, V, VI; B II, IV, VII, VIII
D. A I, III, VII, VIII; B II, IV, V, VI
Answer : C
| A. Spring wood or | I. Lighter in colour early wood |
|---|---|
| B. Autumn wood or | II. High density late wood |
| .. | III. Low density |
| .. | IV. Darker in colour |
| .. | V. Larger number of xylem elements |
| .. | VI. Vessels with wider cavity |
| .. | VII. Lesser number of xylem elements |
| .. | VIII. Vessels with small cavity |
Which of the following combination is correct ?
A. A II, IV, VII, VIII; B I, III, V, VI
B. A I, II, VII, VIII; B III, IV, V, VI
C. A I, III, V, VI; B II, IV, VII, VIII
D. A I, III, VII, VIII; B II, IV, V, VI
Answer : C
24. In stems, the protoxylem lies towards the _____________ and the metaxylem lies towards the ____________ of the organ.
A. centre; periphery
B. periphery; centre
C. periphery; periphery
D. centre; centre
Answer : A
A. centre; periphery
B. periphery; centre
C. periphery; periphery
D. centre; centre
Answer : A
25. Tissues are classified into two main groups, namely meristematic and permanent tissues on the basis of
A. whether the cells being able to divide or not.
B. position of the cells.
C. whether they are living or dead.
D. none of the above
Answer : A
A. whether the cells being able to divide or not.
B. position of the cells.
C. whether they are living or dead.
D. none of the above
Answer : A
26. Which of the following process helps the trichomes in preventing water loss?
A. Where companion cells helps in maintaining the pressure gradient in the sieve tubes.
B. Where plants absorb water through the roots and then give off water vapor through pores in their leaves.
C. Where activity of cork cambium builds pressure on the remaining layers peripheral to phellogen and ultimately these layers dies and slough off.
D. None of the above
Answer : B
A. Where companion cells helps in maintaining the pressure gradient in the sieve tubes.
B. Where plants absorb water through the roots and then give off water vapor through pores in their leaves.
C. Where activity of cork cambium builds pressure on the remaining layers peripheral to phellogen and ultimately these layers dies and slough off.
D. None of the above
Answer : B
27. Cork is formed from
A. phellogen
B. vascular cambium
C. phloem
D. xylem
Answer : A
A. phellogen
B. vascular cambium
C. phloem
D. xylem
Answer : A
28. Sclerenchyma usually___________and_____________ protoplasts.
A. live, without
B. dead, with
C. live, with
D. dead, without
Answer : D
A. live, without
B. dead, with
C. live, with
D. dead, without
Answer : D
29. Various functions like photosynthesis, storage, excretion performed by _____________.
A. sclerenchyma
B. parenchyma
C. collenchyma
D. aerenchyma
Answer : B
A. sclerenchyma
B. parenchyma
C. collenchyma
D. aerenchyma
Answer : B
30. T.S. of dicot leaf passing through the midrib is given below. Certain parts have been marked by alphabets (A to H). Choose the option showing their correct labelling.
A. A Epidermis, B Spongy mesophyll, C Palisade mesophyll, D Stomata, E Guard cells, F Phloem, G Metaxylem, H Protoxylem
B. A Epidermis, B Palisade mesophyll, C Spongy mesophyll, D Sub-stomatal cavity, E Stoma, F Phloem, G Xylem, H Bundle sheath
C. A Epidermis, B Palisade mesophyll, C Spongy mesophyll, D Stomata, E Guard cells, F Epidermis, G Xylem, H Phloem
D. A Epidermis, C Palisade mesophyll, C Spongy mesophyll, D Stomata, E Guard cells, F Phloem, G Metaxylem, H Protoxylem
Answer : B
A. A Epidermis, B Spongy mesophyll, C Palisade mesophyll, D Stomata, E Guard cells, F Phloem, G Metaxylem, H Protoxylem
B. A Epidermis, B Palisade mesophyll, C Spongy mesophyll, D Sub-stomatal cavity, E Stoma, F Phloem, G Xylem, H Bundle sheath
C. A Epidermis, B Palisade mesophyll, C Spongy mesophyll, D Stomata, E Guard cells, F Epidermis, G Xylem, H Phloem
D. A Epidermis, C Palisade mesophyll, C Spongy mesophyll, D Stomata, E Guard cells, F Phloem, G Metaxylem, H Protoxylem
Answer : B
31. A common structural feature of vessel elements and sieve tube elements are
A. pores on lateral walls.
B. presence of p-protein.
C. enucleate condition.
D. thick secondary walls.
Answer : C
A. pores on lateral walls.
B. presence of p-protein.
C. enucleate condition.
D. thick secondary walls.
Answer : C
32. Cork cambium and vascular cambium are
A. the parts of secondary xylem and phloem.
B. the parts of pericycle.
C. lateral meristems.
D. apical meristems.
Answer : C
A. the parts of secondary xylem and phloem.
B. the parts of pericycle.
C. lateral meristems.
D. apical meristems.
Answer : C
33. The given figure shows T.S. of monocot stem. Identify the correct labelling of A to F marked in the given figure.
A. A Epidermis, B Hypodermis, C Vascular bundles, D Phloem, E Xylem, F Ground tissue
B. A Cuticle, B Epidermis, C Sclerenchymatous sheath, D Sclerenchymatous hypodermis, E Parenchymatous sheath, F Phloem
C. A Cuticle, B Epidermis, C Sclerenchymatous hypodermis, D Sclerenchymatous sheath, E Parenchymatous sheath, F Phloem
D. A Cuticle, B Epidermis, C Sclerenchymatous hypodermis, D Sclerenchymatous sheath, E Parenchymatous sheath, F Protoxylem
Answer : A
A. A Epidermis, B Hypodermis, C Vascular bundles, D Phloem, E Xylem, F Ground tissue
B. A Cuticle, B Epidermis, C Sclerenchymatous sheath, D Sclerenchymatous hypodermis, E Parenchymatous sheath, F Phloem
C. A Cuticle, B Epidermis, C Sclerenchymatous hypodermis, D Sclerenchymatous sheath, E Parenchymatous sheath, F Phloem
D. A Cuticle, B Epidermis, C Sclerenchymatous hypodermis, D Sclerenchymatous sheath, E Parenchymatous sheath, F Protoxylem
Answer : A
34. Choose the correct labelling of (A J) in the given figure of T.S. of monocot root.
A. A Root hair, B Epiblema, C Cortex, D Endodermis, E Passage cell, F Pericycle, G Pith, H Phloem, I Metaxylem.
B. A Root hair, B Epiblema, C Cortex, D Endodermis, E Passage cell, F Pith, G Pericycle, H Metaxylem, I Phloem.
C. A Root hair, B Epiblema, C Cortex, D Endodermis, E Pericycle, F Phloem, G Protoxylem, I Metaxylem
D. A Root hair, B Cortex, C Epiblema, D Pericycle, E Endodermis, F Pith, G Phloem, H Protoxylem, I Metaxylem
Answer : C
A. A Root hair, B Epiblema, C Cortex, D Endodermis, E Passage cell, F Pericycle, G Pith, H Phloem, I Metaxylem.
B. A Root hair, B Epiblema, C Cortex, D Endodermis, E Passage cell, F Pith, G Pericycle, H Metaxylem, I Phloem.
C. A Root hair, B Epiblema, C Cortex, D Endodermis, E Pericycle, F Phloem, G Protoxylem, I Metaxylem
D. A Root hair, B Cortex, C Epiblema, D Pericycle, E Endodermis, F Pith, G Phloem, H Protoxylem, I Metaxylem
Answer : C
35. The given figure shows the T.S of dicot root. Some parts are marked as A, B, C, D, E, & F. Choose the option which shows the correct labelling of marked part.
A. A Epiblema, B Root hair, C Cortex, D Endodermis, E Pith, F Pericycle
B. A Cortex, B Pith, C Epiblema, D Endodermis, E Root hair, F Pericycle
C. A Epiblema, B Endodermis, C Cortex, D Root hair, E Pith, F Pericycle
D. A Cortex, B Epiblema, C Pith, D Endodermis, E Root hair, F Pericycle
Answer : D
A. A Epiblema, B Root hair, C Cortex, D Endodermis, E Pith, F Pericycle
B. A Cortex, B Pith, C Epiblema, D Endodermis, E Root hair, F Pericycle
C. A Epiblema, B Endodermis, C Cortex, D Root hair, E Pith, F Pericycle
D. A Cortex, B Epiblema, C Pith, D Endodermis, E Root hair, F Pericycle
Answer : D
36. Match column-I with column-II and choose the correct option.
A. A III, B V, C IV, D I, E II
B. A II, B V, C I, D III, E IV
C. A II, B IV, C I, D III, E V
D. A III, B I, C V, D II, E IV
Answer : D
| Column -I | Column -II |
|---|---|
| A. Bulliform cells | I. Initiation of lateral roots |
| B. Pericycle | II. Root |
| C. Endarch xylem | III. Grasses |
| D. Exarch xylem | IV. Dicot leaf |
| E. Bundle sheath cells | V. Stem |
A. A III, B V, C IV, D I, E II
B. A II, B V, C I, D III, E IV
C. A II, B IV, C I, D III, E V
D. A III, B I, C V, D II, E IV
Answer : D
37. Which one of the following option shows the correct labelling of the parts marked as A, B, C and D in the given figure of a typical dicot root?
A. A Primary phloem, B Vascular cambium, C Secondary phloem, D Primary xylem
B. A Secondary phloem, B Vascular cambium, C Primary phloem, D Primary xylem
C. A Primary phloem, B Primary xylem, C Secondary phloem, D Vascular cambium
D. A Secondary phloem, B Primary xylem, C Primary phloem, D Vascular cambium
Answer : A
A. A Primary phloem, B Vascular cambium, C Secondary phloem, D Primary xylem
B. A Secondary phloem, B Vascular cambium, C Primary phloem, D Primary xylem
C. A Primary phloem, B Primary xylem, C Secondary phloem, D Vascular cambium
D. A Secondary phloem, B Primary xylem, C Primary phloem, D Vascular cambium
Answer : A
38. Which of the following figure is a type of permanent tissue having many different types of cell?
A.
B.
C.
D.
Answer : C
A.
B.
C.
D.
Answer : C
39. The trees growing in desert will
A. show alternate rings of xylem and sclerenchyma.
B. have only conjunctive tissue and phloem is formed by the activity of cambium.
C. show distinct annual rings.
D. not show distinct annual rings.
Answer : D
A. show alternate rings of xylem and sclerenchyma.
B. have only conjunctive tissue and phloem is formed by the activity of cambium.
C. show distinct annual rings.
D. not show distinct annual rings.
Answer : D
40. Why grafting is successful in dicots ?
A. In dicots vascular bundles are arranged in a ring.
B. Dicots have cambium for secondary growth.
C. In dicots vessels with elements are arranged end to end.
D. Cork cambium is present in dicots
Answer : B
A. In dicots vascular bundles are arranged in a ring.
B. Dicots have cambium for secondary growth.
C. In dicots vessels with elements are arranged end to end.
D. Cork cambium is present in dicots
Answer : B
41. The given diagrams show stomatal apparatus in dicots and monocots. Which one is correct option for A, B and C?
A. A Epidermal cells; B Subsidiary cells; C chloroplast
B. A Guard cells; B Subsidiary cells; C Stomatal pore
C. A Guard cells; B Epidermal cells; C Guard cells
D. A Epidermal cells; B Subsidiary cells; C Guard cells
Answer : D
A. A Epidermal cells; B Subsidiary cells; C chloroplast
B. A Guard cells; B Subsidiary cells; C Stomatal pore
C. A Guard cells; B Epidermal cells; C Guard cells
D. A Epidermal cells; B Subsidiary cells; C Guard cells
Answer : D
42. Match the terms given in column I with their features given in column II and choose the correct option.
A. A - (i), B - (ii), C - (iii), D - (iv), E - (v)
B. A - (iii), B - (v), C - (ii), D - (iv), E - (i)
C. A - (iii), B - (i), C - (v), D - (ii), E - (iv)
D. A - (v), B - (iv), C - (iii), D - (i), E - (ii)
Answer : B
| Column-I | Column-II |
|---|---|
| (Terms) | (Features) |
| A. Fibres | (i) Cells are living and thin walled with cellulosic cell wall, store food materials in the form of starch or fat |
| B. Sclereids | (ii) Main water conductive cells of the pteridophytes and the gymnosperms |
| C. Tracheids | (iii) Thick walled, elongated and pointed cells, generally occurring in groups |
| D. Vessels | (iv) Long cylindrical tube like structure and cells are devoid of protoplasm. Characteristic feature of angiosperms |
| E. Xylem parenchyma | (v) Reduced form of sclerenchyma cells with highly thickened lignified cellular walls that form small bundles of durable layers of tissue in most plants. |
A. A - (i), B - (ii), C - (iii), D - (iv), E - (v)
B. A - (iii), B - (v), C - (ii), D - (iv), E - (i)
C. A - (iii), B - (i), C - (v), D - (ii), E - (iv)
D. A - (v), B - (iv), C - (iii), D - (i), E - (ii)
Answer : B
43. Lignin is the important constituent in the cell wall of
A. phloem
B. parenchyma
C. xylem
D. cambium
Answer : C
A. phloem
B. parenchyma
C. xylem
D. cambium
Answer : C
44. The given figure shows the secondary growth in a dicot stem. Their parts are marked as A, B, C, D, E & F. Choose the correct labelling of the parts marked as A to F.
A. A Phellem, B Phellogen, C Medullary rays, D Secondary xylem, E Secondary phloem, F Cambium ring
B. A Phellem, B Phellogen, C Medullary rays, D Secondary phloem, E Secondary xylem, F Cambium ring
C. A Phellogen, B Phellem, C Medullary rays, D Secondary xylem, E Secondary phloem, F Cambium ring
D. A Phellem, B Phellogen, C Cambium ring, D Secondary xylem, E Secondary phloem, F Medullary rays
Answer : A
A. A Phellem, B Phellogen, C Medullary rays, D Secondary xylem, E Secondary phloem, F Cambium ring
B. A Phellem, B Phellogen, C Medullary rays, D Secondary phloem, E Secondary xylem, F Cambium ring
C. A Phellogen, B Phellem, C Medullary rays, D Secondary xylem, E Secondary phloem, F Cambium ring
D. A Phellem, B Phellogen, C Cambium ring, D Secondary xylem, E Secondary phloem, F Medullary rays
Answer : A
45. Identify the types of simple tissue indicated by A, B, C and D and their function.
A. A Parenchyma, Photosnthesis, Storage and Secretion.
B. B Sclerenchyma Scleriods; Transport food material
C. C Collenchyma; Provides mechanical support to organs.
D. D Sclerenchyma Fibres; Provide Mechanical support to the growing parts of the plant such as young stem and petiole of a leaf.
Answer : A
A. A Parenchyma, Photosnthesis, Storage and Secretion.
B. B Sclerenchyma Scleriods; Transport food material
C. C Collenchyma; Provides mechanical support to organs.
D. D Sclerenchyma Fibres; Provide Mechanical support to the growing parts of the plant such as young stem and petiole of a leaf.
Answer : A
46. Identify types of vascular bundles in given figures A, B and C.
A. Radial; Conjoint closed; Conjoint open
B. Conjoint closed; Conjoint open; Radial
C. Conjoint open; Conjoint closed; Radial
D. Bicollateral; Concentric; Radial
Answer : A
A. Radial; Conjoint closed; Conjoint open
B. Conjoint closed; Conjoint open; Radial
C. Conjoint open; Conjoint closed; Radial
D. Bicollateral; Concentric; Radial
Answer : A
47. Cambium is considered as a lateral meristem because
A. it gives rise to lateral branches.
B. it causes increase in girth.
C. it increases height and diameter of a plant.
D. it adds bulk to a plant.
Answer : B
A. it gives rise to lateral branches.
B. it causes increase in girth.
C. it increases height and diameter of a plant.
D. it adds bulk to a plant.
Answer : B
48. A tissue is a group of cells which are
A. similar in origin, but dissimilar in form and function.
B. dissimilar in origin, form and function.
C. dissimilar in origin, but similar in form and function.
D. similar in origin, form and function.
Answer : D
A. similar in origin, but dissimilar in form and function.
B. dissimilar in origin, form and function.
C. dissimilar in origin, but similar in form and function.
D. similar in origin, form and function.
Answer : D
49. A narrow layer of thin walled cells found between phloem/ bark and wood of a dicot is
A. cork cambium
B. vascular cambium
C. endodermis
D. both (a) & (c)
Answer : B
A. cork cambium
B. vascular cambium
C. endodermis
D. both (a) & (c)
Answer : B
50. Which of the following statement(s) is/are correct ?
A. (i) and (iv) only
B. (ii) and (v) only
C. (iii) and (iv) only
D. (ii), (iii) and (v) only
Answer : D
- Uneven thickening of cell wall is characteristic of sclerenchyma.
- Periblem forms cortex of the stem and the root.
- Tracheids are the chief water transporting elements in gymnosperms.
- Companion cell is devoid of nucleus at maturity.
- The commercial cork is obtained from Quercus suber.
A. (i) and (iv) only
B. (ii) and (v) only
C. (iii) and (iv) only
D. (ii), (iii) and (v) only
Answer : D
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