Anatomy of Flowering Plants Questions and Answers

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Anatomy of Flowering Plants Question Paper

1. Which of the following is made up of dead cells?
A. Xylem parenchyma
B. Collenchyma
C. Phellem
D. Pholem

2. The vascular cambium normally gives rise to-
A. phelloderm
B. primary phloem
C. secondary Xylem
D. periderm

3. Identify the wrong statement in context of heartwood:
A. Organic compounds are deposited in it
B. It is highly durable
C. It conducts water and minerals efficiently
D. It comprises dead elements with highly lignified walls.

4. Cortex is the region found between-
A. epidermis and stele
B. pericycle and endodermis
C. endodermis and pith
D. endodermis and vascular bundle.

5. The ballon-shaped structure called tyloses-
A. originate in the lumen of vessels
B. characterise the sapwood
C. are extensions of xylem parenchyma cells into vessels
D. are linked to the ascent of sap through xylem vessels.

6. As secondary growth proceeds, in a dicot stem, the thickness of –
A. sapwood increases
B. heartwood increases
C. both sapwood and heartwood increases
D. both sapwood and heartwood remains the same.

7. Which of the following meristems are lateral meristems?
A. Apical meristem, interfascicular cambium and cork cambium
B. Fascicular vascular cambium, interfascicular cambium and cork cambium
C. Apical meristem, intercalary meristem and cork cambium
D. Intercalary meristem, interfascicular cambium and cork cambium.

8. Which among these statements about collenchyma is true?
A. Collenchyma cells are usually dead without protoplasts.
B. The cells are long and narrow with thick lignified walls.
C. Collenchyma occurs in layers below the epidermis in dicotyledonous plants.
D. These cells are found in the pulp of fruits like guava, pear and sapota.

9. Pick out the correct statement
A. Spring wood is otherwise called late wood.
B. Autumn wood is otherwise called early wood
C. In old trees, the heart wood is involved in the conduction of water.
D. The cambial cells present between primary xylem and primary phloem constitute the intrafascicular cambium.

10. In plants, lateral roots arise from –
A. Endodermis
B. Epidermis
C. Hypodermis
D. Pericycle

11. Assertion: No secondary growth takes place in monocots.
Reasons: Secondary growth is not related with cambium
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

12. Read the different components from (i) to (iv) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem.
(i) Secondary cortex
(ii) Wood
(iii) Secondary phloem
(iv) Phellem
The correct order is
A. (iv), (i), (iii), (ii)
B. (iv), (iii), (i), (ii)
C. (iii), (iv), (ii), (i)
D. (i), (ii), (iv), (iii)

13. Medullary rays are tissues made up of
A. phloem parenchyma
B. xylem parenchymna
C. sieve tube
D. sclerenchyma

14. Oval, spherical or polygonal cells, thickening at the corners due to deposition of cellulose, hemicellulose and pectin, often containing chloroplasts and having or not having inter cellular spaces are called
A. Parenchyma
B. Sclerenchyma
C. Chlorenchyma
D. collenchyma

15. The increase in length of petiole results from the division of
A. apical meristem
B. lateral meristem
C. intercalary meristem
D. phellogen

16. Lenticels are involved in
(i) Photosynthesis
(ii) conduction of water
(iii) transpiration
(iv) gaseous exchange
A. (i) and (ii)
B. (ii) and (iv)
C. (ii) and (iii)
D. (iii) and (iv)

17. Select the characters which are not applicable to the anatomy of dicot roots?
A. Conjunctive tissue present
B. Presence of protein compounds in the casparian strips
C. Polyarch xylem bundles
D. Presence of pericycle
A. A and B
B. A and D
C. B and D
D. B and C

18. Pick out the wrong statement.
A. Gymnosperms lack vessles in their xylem.
B. The cell wall of parenchyma is made up of pectin.
C. The first formed primary xylem elements are called protoxylem.
D. Gymnosperms have albuminous cells and have sieve cells in their phloem.
E. Intercellular spaces are absent in collenchyma.

19. ______ is the innermost layer of the cortex.
A. Endodermis
B. Stele
C. Pericycle
D. Pith

20. Which of the following incorrect regarding dicot root?
A. Inconspicuous pith
B. Polyarch condition
C. 2 to 4 xylem and phloem patches
D. presence of conjunctive parenchyma
21. Closed vascular bundles lack
A. Cambium
B. ground tissue
C. pith
D. conjunctive tissue

Environmental Issues Excretory Products and their Elimination
Biodiversity and Conservation Body Fluids and Circulation
Ecosystem Breathing and Respiration
Organisms and Populations Digestion and Absorption
Biotechnology and its Application Plant Growth
Biotechnology Principles and Processes Respiration in Plants
Microbes in Human Welfare Photosynthesis
Strategies for Enhancement in Food Production Mineral Nutrition
Human Health and Disease Transport in Plants
Evolution Cell Cycle
Molecular Basic of Inheritance Biomolecules
Principle of Inheritance Cell the Unit of Life
Reproductive Health Structural Organisation
Human Reproduction Anatomy of Flowering Plants
Sexual Reproduction in Flowering Plants Morphology of Flowering Plants
Reproduction in Organisms Animal Kingdom
Chemical Coordination Plant Kingdom
Neural Control and Coordination Biological Classification
Locomotion and Movement The Living World

22. Lenticels are involved in the process of
A. Transpiration
B. Guttation
C. Respiration
D. Both (a) and (b)

23. Age of plant can be determined by observing its
A. cork cambium
B. wood
C. pith
D. bark

24. Fascicular cambium separates the xylem and phloem in
A. dicots only
B. monocots only
C. both dictos and monocots
D. none of the above

25. The girth or diameter of the stem increases due to the activity of the following
A. apical meristems
B. intercalary meristems
C. lateral meristems
D. parenchyma cells

26. Transport proteins of endodermal cells are control points where a plant adjusts the quantity and types of solutes that reach the xylem. Root endodermis is able to actively transport ions in one direction only because of the layer of-
A. Suberin
B. Actin
C. Lignin
D. Cellulose

27. You are given a old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two
A. secondary phloem
B. protoxylem
C. cortical cells
D. secondary xylem

28. Tracheids differ from other tracheary elements in
A. having casparian strips
B. 6being imperforate
C. lacking nucleus
D. being lignified.

29. Which of the following tissues provide maximum mechanical support to plant organs?
A. Sclerenchyma
B. Parenchyma
C. Collenchyma
D. Aerenchyma

30. In a monocot leaf stomata are present
A. only on abaxial surface
B. only on adaxial surface
C. on both the surfaces
D. more on abaxial surtace

31. Ring like secondary cell wall thickening is referred to as
A. Spiral
B. Scalariform
C. helical
D. annular

32. A distinguishing feature of latex cells is that they are
A. single-celled elements with anastomosing fusing) branches
B. single-celled elements with non-anastomosing branches
C. multi-celled elements with anastomosing branches
D. multi-celled elements with non-anastomosing branches.

33. Which of the following parts of dicot root is made up of cells with suberin deposition in tangential as well as radial walls?
A. Epidermis
B. Endodermis
C. Cortex
D. Pericycle

34. When one wood is lighter in colour with a lower density the other wood is darker with a higher density. They are
A. spring wood and autumn wood
B. heart wood and late wood
C. spring wood and early wood
D. sap wood and spring wood

35. Which of these characters does/do not apply to the vascular bundle of monocot stem?
I. Conjoint
II. Endarch protoxylem
III. Open
IV. Phloem parenchyma is absent
A. I and II only
B. III and IV only
C. II and III only
D. I only

36. Pick out the wrong statement.
A. Gymnosperms lack vessels in their xylem.
B. The cell wall of collenchyma is made up of cellulose, hemicellulose and pectin.
C. The first formed primary xylem elements are called protoxylem.
D. The cell wall of parenchyma is made up of pectin.

37. The epidermal hairs present on the stem of the plant are called-
A. guard cells
B. atrichomes
C. stomata
D. root hairs

38. Identify the tissue not formed during secondary growth in plants.
A. Phellogen
B. Phellem
C. Wood
D. Pericycle

39. ldentify the correct pair of statements
(i) Functions of sieve tubes are controlled by nucleus of companion cells
(ii) Albuminous cells are present in angiosperms
(iii) In dicot root, the vascular cambium is completely secondary in origin.
(iv) cylindrical meristems contribute to the formation of primary plant body.
A. (i) and (iii)
B. (ii) and (iv)
C. (i) and (ii)
D. (ii) and (iii)

40. Which of the following is not found in the transverse section of monocot stem?
A. Sclerenchymatous bundle sheath
B. Lysigenous cavity
C. Sclerenchymatous hypodermis
D. Starch sheath

41. Age of a tree can be estimated by-
A. number of annual rings
B. diameter of its heartwood
C. its height and growth
D. biomass

42. Interfascicular cambium develops from the cells of
A. Endodermis
B. medullary rays
C. pericycle
D. xylem parenchyma

43. Cork cambium and vascular cambium are the examples of
A. apical meristem
B. secondary meristem
C. wound tissue
D. primary meristem

44. The common bottle cork is a product of –
A. Dermatogens
B. Xylem
C. Phellogen
D. vascular cambium

45. Secondary cortex is also known as
A. Phellem
B. Phellogen
C. Phelloderm
D. bark

46. Cork cambium of dicot stem originates from-
(i) dediferentiated parenchyma cells of cortex
(ii) dedifferentiated collenchyma cells of cortex
(iii) parenchyma cells of medullary ray
(iv) parenchyma cells of pericycle

A. (i) and (ii)
B. (II) and (iii)
C. (iii) and (iv)
D. (ii) and (iv)

47. Plasmodesmata are usually observed between-
A. sieve tubes and bast fibres
B. trachea and phloem fibres
C. xylem parenchyma and xylem fibres
D. sieve tubes and companion cells.

48. Which of the following tissues is not a component of any complex tissue?
A. Parenchyma
B. sclerenchyma
C. tracheids
D. collenchyma

49. The commonly found tissue in pulp of fruits like guava and in leaves of tea is-
A. Collenchymas
B. Chlorenchyma
C. Sclereid
D. aerenchyma

50. During secondary growth the amount of secondary xylem produced is more than the secondary phloem because
A. the cambium is more active on the inner side
B. the cambium is more active on the outer side
C. the cambium is equally active on both sides
D. but the xylem is needed more the cambium has no role to play in this