MCQ Questions for Class 11 Biology: Ch 6 Anatomy of Flowering Plants

MCQ Questions for Class 11 Biology: Ch 6 Anatomy of Flowering Plants

1. Spring wood (early wood) differs with autumn wood (late wood) in -
(a) Size of vessels and tracheids
(b) Thickness of cell wall
(c) Amount of wood
(d) All the above
► (d) All the above

2. Stem of date palm increases in girth due to activity of
(a) Intercalary meristem
(b) Apical meristem
(c) Lateral meristem
(d) None of the above
► (b) Apical meristem

3. In a hollow stem, what is most affected
(a) Conduction of food
(b) Conduction of water
(c) Storage of food
(d) None of the above
► (c) Storage of food

4. The secondary growth of woody angiosperm stem occurs by
(a) Cork cambium and apical meristem
(b) Cork cambium and lateral meristem
(c) Vascular cambium and apical meristem
(d) Vascular cambium and cork cambium
► (d) Vascular cambium and cork cambium

5. Vessels and companion cells are respectively present in the xylem and phloem of
(a) Gymnosperm
(b) Pteridophytes
(c) Angiosperm
(d) Bryophyta
► (c) Angiosperm

6. The lateral roots originate from
(a) Endodermis cells
(b) Cortical cells below root hair
(c) Pericycle cells
(d) Epiblema
► (c) Pericycle cells

7. Which of the following provide maximum mechanical strength to a tree trunk.
(a) Heart wood
(b) Sap wood
(c) Cork
(d) Late wood
► (a) Heart wood

8. Angular collenchyma occurs in
(a) Salvia
(b) Helianthus
(c) Althea
(d) Cucurbita
► (d) Cucurbita

9. Which among the following are elongated or tube like cells withthick and lignified walls and tapering ends?
(a) Xylem fibres
(b) Xylem parenchyma
(c) Vessels
(d) Tracheids
► (d) Tracheids

10. Rod shaped elongated sclereids found in the seed coats of pulses are known as         
(a) Astrosclereids
(b) Macrosclereids
(c) Trichosclereids
(d) Brachysclereids
► (b) Macrosclereids

11. Formation of vascular rays occurs in which order
(a) Centripetal
(b) Centrifugal
(c) Acropetal order
(d) (a) and (b) both
► (d) (a) and (b) both

12. Diffuse porous woods are characteristic of plants growing in
(a) alpine region
(b) cold winter regions
(c) temperature climate
(d) tropics
► (d) tropics

13. Living tissue in lenticel is called
(a) Conjunctive tissue
(b) Connective tissue
(c) Complementary tissue
(d) Phelloderm
► (c) Complementary tissue

14. Which tissue remains more active during autumn
(a) Cork cambium
(b) Vascular cambium
(c) Parenchyma
(d) Sclerenchyma
► (b) Vascular cambium

15. Jute fibres are obtained from the
(a) Pith
(b) Endodermis
(c) Xylem
(d) Secondary phloem
► (d) Secondary phloem

16. In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissues?
(a) all parts
(b) stem and root
(c) flowers, fruits and leaves
(d) shoot tips and root tips
► (c) flowers, fruits and leaves

17. Bark includes all the tissues
(a) Lying outside the vascular cambium
(b) Formed by vascular cambium
(c) Formed by phellogen
(d) Phellem & phelloderm
► (a) Lying outside the vascular cambium

18. Fibre (longest plant cell), belongs to which tissue -
(a) Parenchyma
(b) Collenchyma
(c) Aerenchyma
(d) Sclerenchyma
► (d) Sclerenchyma

19. Formation of secondary xylem and phloem respectively
(a) Centrifugal and centripetal
(b) Centripetal and centrifugal
(c) Both centripetal
(d) Both centrifugal
► (b) Centripetal and centrifugal

20. The characteristic feature of which cells have lignified thickening at the corner?
(a) Collechyma
(b) Parenchyma
(c) Sclerenchyma
(d) Chlorenchyma
► (c) Sclerenchyma

21. A wood with scattered parenchyma is called
(a) Paratracheal
(b) Apotracheal
(c) Syntracheal
(d) None of the Above
► (b) Apotracheal

22. The tissue responsible for translocation of food material is -
(a) Parenchyma
(b) Phloem
(c) Vessels
(d) Fibres
► (b) Phloem

23. Most conspicuous annual rings form in:
(a) Temperate evergreen plants
(b) Tropical deciduous
(c) Temperate deciduous plants
(d) Tropical evergreen
► (c) Temperate deciduous plants

24. Cells of this tissue are living and show angular wall thickening. They also provide mechanical support. The tissue is
(a) Collenchyma
(b) Xylem
(c) Epidermis
(d) Sclerenchyma
► (a) Collenchyma

25. Quiescentcentre is found in the plant at
(a) Root tips
(b) Cambium
(c) Shoot tips
(d) Leaf tip
► (a) Root tips

26. The region consisting of dead elements with highly lignified walls is called
(a) Autumn wood
(b) Spring wood
(c) Sap wood
(d) Heart wood
► (d) Heart wood

27. Which type of fibres mainly occur in phloem
(a) Fibre tracheids
(b) Libriform
(c) Sclereids
(d) Wood fibres
► (b) Libriform

28. In leaves, the ground tissue consists of thin-walled chloroplast containing cells are called
(a) Parenchyma
(b) Sclerenchyma
(c) Chlorenchyma
(d) Mesophyll
► (d) Mesophyll

29. "Patua" is obtained from Hibiscus sabdariffa is
(a) Secondary phloem
(b) Collenchymatous hypodermis
(c) Pericycle
(d) Epidermis
► (a) Secondary phloem

30. What is "Rhytidome":
(a) Bark
(b) Dead tissue separated by periderm on outerside
(c) Dead tissue separated by periderm on inner side
(d) Secondary cortex
► (b) Dead tissue separated by periderm on outerside

31. Mechanical tissue consisting of living cells is -
(a) Sclerenchyma
(b) Collenchyma
(c) Chlorenchyma
(d) Parenchyma
► (b) Collenchyma

32. Casparian thickenings are found in the cells of
(a) Endodermis of the root
(b) Pericycle of the root
(c) Endodermis of the stem
(d) Pericycle of the stem
► (a) Endodermis of the root

33. A meristematic region present between the xylem and the phloem of open vascular bundles is called
(a) Pericycle
(b) Pith
(c) Intrafascicular cambium
(d) Medullary ray
► (c) Intrafascicular cambium

34. Study of wood is called
(a) Anatomy
(b) Morphology
(c) Histology
(d) Xylotomy
► (d) Xylotomy
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