Anatomy of Flowering Plants PYQs Set 1 (PDF)

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Mere Teacher · Previous Year Questions NEET Biology · Anatomy of Flowering Plants · Set 1 (Q1-30)
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1. $Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R : Assertion (A): Late wood has fewer xylary elements with narrow vessels. Reason (R): Cambium is less active in winters.In the light of the above statements, choose the correct answer from the options given below:$ (1) $A is false but R is true.$ (2) $Both A and R are true and R is the correct explanation of A .$ (3) $Both A and R are true but R is NOT the correct explanation of A .$ (4) $A is true but R is false.$ 2. $Identify the correct statements: A. Lenticels are the lens-shaped openings permitting the exchange of gases. B. Bark formed early in the season is called hard bark. C. Bark is a technical term that refers to all tissues exterior to vascular cambium. D. Bark refers to periderm and secondary phloem. E. Phellogen is single-layered in thickness. Choose the correct answer from the options given below:$ (1) $B and C only$ (2) $B, C and E only$ (3) $A and D only$ (4) $A, B and D only$ 3. $Which of the statements given below is not true about formation of annual rings in trees?$ (1) $Annual ring is a combination of spring wood and autumn wood produced in a year$ (2) $Differential activity of cambium causes light and dark bands of tissue-early and late wood respectively.$ (3) $Activity of cambium depends upon variation in climate.$ (4) $Annual rings are not prominent in trees of temperate region.$ 4. $The anatomy of springwood shows some peculiar features. Identify the correct set of statements about springwood. A. It is also called as the earlywood B. In spring season cambium produces xylem elements with narrow vessels C. It is lighter in colour D. The springwood along with autumnwood shows alternate concentric rings forming annual rings E. It has lower density Choose the correct answer from the options given below:$ (1) $C, D and E Only$ (2) $A, B, D and E Only$ (3) $A, C, D and E Only$ (4) $A, B and D Only$ 5. $Which of the following statements about cork cambium is incorrect?$ (1) $It forms a part of periderm$ (2) $It is responsible for the formation of lenticels$ (3) $It is a couple of layers thick$ (4) $It forms secondary cortex on its outerside$ 6. $Large, empty colourless cells of the adaxial epidermis along the veins of grass leaves are$ (1) $Guard cells$ (2) $Bundle sheath cells$ (3) $Bulliform cells$ (4) $Lenticels$ 7. $The transverse section of a plant shows following anatomical features: A. Large number of scattered vascular bundles surrounded by bundle sheath. B. Large conspicuous parenchymatous ground tissue. C. Vascular bundles conjoint and closed. D. Phloem parenchyma absent. Identify the category of plant and its part:$ (1) $Monocotyledonous root$ (2) $Dicotyledonous stem$ (3) $Dicotyledonous root$ (4) $Monocotyledonous stem$ 8. $Given below are two statements: Statement-I: Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body. Statement-Il: Exarch condition is the most common feature of the root system. In the light of the above statements, choose the correct answer from the options given below:$ (1) $Statement-I is incorrect but Statement-II is true.$ (2) $Both Statement-I and Statement-II are true.$ (3) $Both Statement-I and Statement-II are false.$ (4) $Statement-I is correct but Statement-II is false.$ 9. $In old trees the greater part of secondary xylem is dark brown and resistant to insect attack due to : A. secretion of secondary metabolities and their deposition in the lumen of vessels. B. deposition of organic compounds like tannins and resins in the central layers of stem. C. deposition of suberin and aromatic substances in the outer layer of stem. D. deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem. E. presence of parenchyma cells, functionally active xylem elements and essential oils. Choose the correct answer from the options given below:$ (1) $B and D Only$ (2) $A and B Only$ (3) $C and D Only$ (4) $D and E Only$ 10. $Select the correct pair$ (1) $In dicot leaves, vascular bundles are surrounded by large thick-walled cells Conjunctive tissue$ (2) $Cells of medullary rays that form part of cambial rings Interfascicular cambium$ (3) $Loose parenchyma cells rupturing the epidermis and forming a lens-shaped opening in bark Spongy parenchyma$ (4) $Large colorless empty cells in the epidermis of grass leaves Subsidiary cells$ 11. $Identify the incorrect statement.$ (1) $Sapwood is involved in conduction of water and minerals from root to leaf.$ (2) $Sapwood is the innermost secondary xylem and is lighter in colour.$ (3) $Due to deposition of tannins, resins, oils etc., heart wood is dark in colour.$ (4) $Heart wood does not conduct water but gives mechanical support.$ 12. $Transport of water and mineral in higher plants takes place through$ (1) $Sieve elements$ (2) $Companion cells$ (3) $Tracheids$ (4) $Transfusion tissue$ 13. $Some vascular bundles are described as open because these$ (1) $Are surrounded by pericycle but no endodermis.$ (2) $Are capable of producing secondary xylem and phloem.$ (3) $Possess conjunctive tissue between xylem and phloem.$ (4) $Are not surrounded by pericycle.$ 14. $A major characteristic of the monocot root is the presence of:$ (1) $Open vascular bundles$ (2) $Scattered vascular bundles$ (3) $Vasculature without cambium$ (4) $Xylem along the radius$ 15. $The length of different internodes in a culm of sugarcane is variable because of :$ (1) $Position of axillary buds$ (2) $Size of leaf lamina at the node below each internode$ (3) $Intercalary meristem$ (4) $Shoot apical meristem$ 16. $For a critical study of secondary growth in plants, which one of the following pairs is suitable?$ (1) $Wheat and maiden hair fern$ (2) $Sugarcane and sunflower$ (3) $Teak and pine$ (4) $Deodar and fern$ 17. $A common structural feature of vessel elements and sieve tube elements is :-$ (1) $Presence of p-protein$ (2) $Enucleate condition$ (3) $Thick secondary walls$ (4) $Pores on lateral walls$ 18. $Gymnosperms are also called soft wood spermatophytes because they lack$ (1) $Cambium$ (2) $Phloem fibres$ (3) $Xylem fibres$ (4) $Thick walled tracheids$ 19. $Initiation of lateral roots and vascular cambium during secondary growth takes place in cells of:$ (1) $Epiblema$ (2) $Cortex$ (3) $Endodermis$ (4) $Pericycle$ 20. $You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?$ (1) $Secondary xylem$ (2) $Secondary phloem$ (3) $Protoxylem$ (4) $Cortical cells$ 21. $Axillary buds are derived from the activity of:$ (1) $Secondary meristem$ (2) $Apical meristem$ (3) $Intercalary meristem$ (4) $Lateral meristem$ 22. $Water containing cavities in vascular bundles are found in$ (1) $Sunflower$ (2) $Maize$ (3) $Cycas$ (4) $Pinus$ 23. $Regeneration of damaged growing grass following grazing is largely due to :-$ (1) $Lateral meristem$ (2) $Apical meristem$ (3) $Intercalary meristem$ (4) $Secondary meristem$ 24. $During secondary growth in dicot stem, cork cambium or phellogen usually develops in$ (1) $Epidermal region$ (2) $Cortex region$ (3) $Pericycle region$ (4) $Pith region$ 25. $The cork cambium, cork and secondary cortex are collectively called$ (1) $Phellogen$ (2) $Periderm$ (3) $Phellem$ (4) $Phelloderm$ 26. $Palisade parenchyma is absent in leaves of:-$ (1) $Gram$ (2) $Sorghum$ (3) $Mustard$ (4) $Soybean$ 27. $Plants having little or no secondary growth are$ (1) $Grasses$ (2) $Deciduous angiosperms$ (3) $Conifers$ (4) $Cycads$ 28. $A major characteristic of the monocot root is the presence of :$ (1) $Scattered vascular bundles$ (2) $Vasculature without cambium$ (3) $Cambium sandwiched between phloem and xylem along the radius$ (4) $Open vascular bundles$ 29. $The common bottle cork is a product of :-$ (1) $Xylem$ (2) $Vascular Cambium$ (3) $Dermatogen$ (4) $Phellogen$ 30. $Transport of food material in higher plants takes place through :$ (1) $Transfusion tissue$ (2) $Tracheids$ (3) $Sieve elements$ (4) $Companion cells$