INTERNAL ORGANISATION OF PLANTS-ASSIGNMENT

1	In Dicot stem evaporation of water is checked by Only cuticle Hypodermis General cortex Trichomes and Cuticle Ans:Trichomes and Cuticle
2	The tissue, that is absent in cortex of Dicot stem is Parenchyma Secretary tissue Collenchyma Sclerenchyma Ans:Sclerenchyma
3	[A] : Dicot stem has Eustele. [R] : It has top shaped vascular bundles. A and R are correct and R is correct explanation for A A and R are correct and R is not the correct explanation for A A is correct and R is wrong A is wrong and R is correct Ans:A and R are correct and R is not the correct explanation for A
4	Arrange first time appearance of the following tissues when observed in centripetal manner in the internal structure of Dicot stem I. Sclerenchyma II. Phloem III. Parenchyma IV. Meristem III, IV, I, II III, I, II, IV I, III, IV, II IV, II, I, III Ans:III, I, II, IV
5	Arrange the following plants with gradual increase in the number of vascular bundles in their roots. I. Ricinus II. Pisum III. Trapa IV. Gossypium III, II, IV, I III, II, I, IV II, III, IV, I III, IV, II, I Ans:III, II, IV, I
6	Vascular bundles of root are described as Conjoint, Radial, Exarch Separate, Collateral, Exarch Radial, Separae, Open, Exarch Radial, Separate, Closed, Exarch Ans:Radial, Separate, Closed, Exarch
7	[A] : Endodermis acts as barrier between Cortex and Stele [R] : It is neither a part of Cortex nor Stele. Both A and R are correct and R explains A Both A and R are correct and R does not explain A A is correct and R is wrong A is incorrect and R is correct Ans:A is correct and R is wrong
8	Root pericycle becomes sclerenchymatous in Trapa Nicotiana Zea Ricinus Ans:Zea
9	Suberin is present in the cell walls of I. Exodermis II. Epidermis III. Endodermis IV. General cortex I and II II and III I and III III and IV Ans:I and III
10	The tissue present between xylem and phloem of a root is called as Medullary ray Conjunctive tissue Medulla Pericycle Ans:Conjunctive tissue
11	Lateral roots are formed from the following part of root. Endodermis Pericycle Medulla Conjunctive tissue Ans:Pericycle
12	In terms of number of vascular bundles present in the stele, this dicot shows resemblance with monocot root. Ricinus Castanea Gossypium Allium Ans:Castanea
13	Medullary rays of Dicot stem have contact with I. Fascicular cambium II. Xylem III. Pericycle IV. Phloem II, III, IV I, II, III I, III, IV I, II, III, IV Ans:I, II, III, IV
14	Arrange the following plants in an order of gradual decrease in the distance between Metaxylem elements of adjacent vascular bundles of their roots. I. Ricinus II. Pisum III. Zea IV)Gossypium III, IV, I, II III, I, IV, II I, III, IV, II I, III, II, IV Ans:III, I, IV, II
15	The stele of Monocot stem is described as Siphonostele Eustele Solenostele Atactostele Ans:Atactostele
16	Monocot stem differs with the Dicot stem in the following internal features I. Epidermis without stomata II. Absence of Trichomes III. Sclerenchymatous hypodermis I, II II, III I, III I, II, III Ans:II, III
17	The most abundantly present tissue in Monocot stem is Parenchyma Sclerenchyma Xylem Phloem Ans:Parenchyma
18	Lysigenous cavity of Monocot stem bundles is formed by Bundle sheath Xylem fibres vessels with annular thickenings Vessels with pitted thickenings Ans:vessels with annular thickenings
19	Choose the wrong statement All the vascular bundles of Monocot stem do not maintain any contact with Hypodermis All cells of Hypodermis of Maize stem have Lignified walls All hypodermal cells are more or less similar in size Maize stem carries out Photosynthesis Ans:All the vascular bundles of Monocot stem do not maintain any contact with Hypodermis
20	Protoxylem of a given vascular bundle of Maize has two vessels. If there are 1500 vessels in a given Trasverse section of Maize, the number of Proto xylem lacunae in the stem is 750 None 375 1500 Ans:375
21	Vessels of Monocot stem bundles are arranged in the form of V or U V or L Y or U V or Y Ans:V or Y
22	Match the following with respect to Monocot stem A - III, B - IV, C - II, D - I A - III, B - I, C- IV, D - II A - III, B - IV, C - I, D - II A - IV, B - III, C - I, D - II Ans:A - III, B - IV, C - I, D - II
23	Study the following table and choose the correct combination I and II III and IV II and III I and IV Ans:II and III
24	[A]: Vascular bundles of Maize stem are described as Closed vascular bundles [R]: Each vascular bundle of Monocot stem is enclosed by a fibrous sheath Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true but R is not the correct explanation of A
25	Arrange the following organs of Angiosperms with gradual increase in the number of vascular bundles in them. I. Monocot Root II. Monocot stem III. Dicot root IV. Dicot stem III, I, IV, II II, IV, I, III I, III, IV, II III, I, II, IV Ans:III, I, IV, II
26	Choose the correct statement with respect to Maize stem Peripheral cells of Ground tissue are larger and Photosynthetic Inner cells of Ground tissue are smaller and Storage in function Inner vascular bundles are compactly and irregularly arranged Peripheral vascular bundles are many and may be arranged in One or two rings Ans:Peripheral vascular bundles are many and may be arranged in One or two rings
27	Vascular bundles of Monocot stem are best described as I. Conjoint II. Collateral III. Open IV. Endarch V. Oval VI. Closed VII. Radial VIII. Separate I, V, IV, VI II, IV, I, V, VI IV, V, II, VIII, VII III, II, I, V, IV Ans:II, IV, I, V, VI
28	Intercellular spaces are present in the following tissue/s of leaf I. Mesophyll of Monocot leaf II. Spongy tissue of Dicot leaf III. Palisade of Dicot leaf IV. Bundle sheath of Monocot leaf I, II, IV II, III, IV II and I I, II, III Ans:I, II, III
29	Choose the correct statement All Dicots have stomata on both surfaces of their leaves None of the vascular bundles of leaf are completely surrounded by Mesophyll Bundle sheath is a layer made of specialized Mesophyll cells Equal distance is maintained between the bundles of Monocot leaf Ans:Bundle sheath is a layer made of specialized Mesophyll cells
30	Stomata are absent in the leaves of Potamogeton Epiphytes Aphyllous plants Holoparasites like Balanophora Ans:Holoparasites like Balanophora
31	[A]: Bundle sheath of Monocot leaf shows endodermal nature [R]: Tangential walls of bundle sheath cels show Ligno-Suberin strips Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
32	Turgor variations are shown by cells not associated with stomata in Adaxial epidermis of dicot leaf Abaxial epidermis of Monocot leaf Abaxial epidermis of dicot leaf Adaxial epidermis of Zea leaf Ans:Adaxial epidermis of Zea leaf
33	Match the following A - II, B - III, C- IV, D - I A - II, B - III, C- IV, D - V A - III, B - II, C- I, D - IV A - IV, B- III, C - II, D - V Ans:A - II, B - III, C- IV, D - I
34	in the Transverse section of lamina of the following leaf taken at midpoint, both longitudinal and transverse sections of vascular bundles can be observed Zea Oryza Smilax Allium Ans:Smilax
35	Only parenchyma is produced by Fascicular cambium Interfascicular cambium Ray initials Fusiform initials Ans:Ray initials
36	The increase in thickness of the stems and roots of Dicots is due to activity of I. Only primary meristems II. Intercalary meristems III. lateral meristems IV. Apical meristems II, III only III I, II, III, IV I, II, III Ans:only III
37	The structure of Dicot stem involved in secondary growth is Pericycle Medulla Axial parenchyma Medullary rays Ans:Medullary rays
38	Arrange the following ot Dicot stem in secondary growth in correct centripetal sequence. I. Phloem formed from procambium II. Xylem formed from procambium III. Phloem formed from lateral meristem IV. Xylem formed from vascular cambium I, II, IV, III I, III, IV, II II, IV, III, I I, IV, III, II Ans:I, III, IV, II
39	Trunk of dicot stem becomes hard and strong due to more activity of fusiform intitials towards inside Ray initials towards outside Ray initials towards inside Fusiform initials towards outside Ans:fusiform intitials towards inside
40	[A]: Annual rings are absent in Pisum [R]: Pisum is dicot Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true but R is not the correct explanation of A
41	Continuity between Cambium and Procambium is seen in Dicot root Dicot stem Mocot root Monocot stem Ans:Dicot stem
42	[A]: Growth rings are commonly seen intemperate plants [R]: In temperate regions much fluctuations in Photoperiod during a year is seen. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
43	[A]: All growth rings do not have same thickness [R]: Meteriological conditions vary from year to year. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
44	In a 20 years old dicot plant, if an early wood of an annual ring has no contact with late wood towards interior, the early wood belongs to Last annual ring 1st annual ring annual ring of any year recent annual ring of heart wood Ans:1st annual ring
45	Resinous colored substances are present in I. Heartwood II. Sapwood III. Cork IV. Phelloderm I and II III and IV I and III I, II, III Ans:I and III
46	Commercial cork is obtained from Santalum Pterocarpous Quercus Dalbergia Ans:Quercus
47	Arrange the following tissues of dicot stem in secondary growth from centre towards the periphery I. Phellogen II. Primary cortex III. Phellum IV. Phelloderm II, IV, I, III IV, II, I, III III, I, IV, II III, II, I, IV Ans:II, IV, I, III