TISSUES ASSIGNMENT

1	Choose the correct statement Meristematic cells have well developed plastids Meristems can be formed from any permanent tissue All meristems have only one type of cells Meristems do not have intercellular spaces Ans:Meristems do not have intercellular spaces
2	The term meristem is given by a person who also coined the terms Xylem and Collenchyma Phloem and Sclerenchyma Phloem and Collenchyma Xylem and Phloem Ans:Xylem and Phloem
3	Most of the cells of this meristem are not isodiametric Apical meristem Cork cambium Intercalary meristem Vascular cambium Ans:Vascular cambium
4	Choose the correct statements I. A tissue can posses morphologically similar cells II. Some tissues have both living and dead cells III. A tissue always has differentiated cells IV. Cells of meristems are in one or other stages of cell cycle I and II II and III I, II, IV I, II, III, IV Ans:I, II, IV
5	[A]: Meristematic cells have more mitochondria [R]: Lysosomes are abundantly seen in dividing cells 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
6	[A]: Meristematic cells do not have Tanins [R]: Ergastic substances are absent in Meristematic cells 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
7	In cell wall composition and nature of thickness, Meristems show more similarities with Parenchyma Collenchyma Fibers Sclereids Ans:Parenchyma
8	These are coenocytes Epithelial cells of resin ducts Epithem cells of water stomata Latex cells Latex vessels Ans:Latex cells
9	Laticifers are mostly associated with Cortex Phloem Xylem Medulla Ans:Phloem
10	These secretary tissues impart fragrance to the various plant parts. Nectaries Osmophores Laticifers Secretary cavities Ans:Osmophores
11	Modified leaves have nectaries in I. Nepenthes II. Passiflroa III. Euphorbia IV. Citrus I, II III, IV I, III I, II, III, Ans:I, III
12	These secretary tissues are in the form of Flaps. Osmophores Nectaries Digestive glands Hydathodes Ans:Osmophores
13	Para rubber is obtained from Ficus Hevea Nerium Achras Ans:Hevea
14	Guard cells form a part of the following secretary tissue Hydathode Laticifer Osmophore Nectrary Ans:Hydathode
15	Latex is stored in Non-living envelope of plant cell cytoplasmic matrix double membrane bound organelle Organelle with tonoplast Ans: Organelle with tonoplast
16	[A] :Tropaeolum shows Guttation [R] : It has a type of tissues having epithem 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:Both A and R are correct and R explains A
17	Study the following and identify the correct match A. Enzymes I. Hydathode B. Rubber II. Nectaries C. Water III.Essential oils D. Sugars IV.Latex V. Digestive glands A - IV, B - V, C - II, D - III A - V, B - IV, C - I, D - III A - V, B- IV, C- I, D - II A- V, B- III, C- II, D- I Ans:A - V, B- IV, C- I, D - II
18	Identify the internal structures among the given secretary tissues I. Special issues seen in the leaves of Citrus II. special tissues seen in the stems of Hevea III. Special tissues associated with the leaves of Pitcher plant IV. Special tissues associated with the leaves of Tropaeolum I and III II and IV I and II III and IV Ans:I and II
19	Presence of big cavities is a feature of following secretary tissue Hydathodes Laticifers Digestive glands Nectaries Ans:Hydathodes
20	Study the following and choose the correct match A - II, B - III, C - IV, D - I A - II, B - III C, - V, D - I A -IV, B - III, C - II, D - V A - II B - I, C - IV, D - III Ans:A - II, B - III, C - IV, D - I
21	The following are ontogenetically more related Sieve cells, Companiaon cells Sieve tube element, Albuminous cell Sieve cell, Albuminous cell Sieve tube member, Companion cell Ans:Sieve tube member, Companion cell
22	Choose the correct statement Each sieve cell is associated with one or more than one companion cells Each sieve tube is associated with one or more than one companion cells Some times companion cells are longer than sieve tube element A sieve tube element is associated with one or more than one companion cells Ans:A sieve tube element is associated with one or more than one companion cells
23	Study the following table and choose the correct combination A and C B and D C and D A and B Ans:A and B
24	[A]: Sieve cells are living at maturity [R]: They have nucleated cytoplasm 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
25	The life of sieve element is supported by Phloem parenchyma Sieve cells Phloem fibres Companion cells Ans:Companion cells
26	[A]: Sieve areas are unspecialized in sieve elements of Gymnosperms [R]: Sieve elements of fruitless spermatophytes lack sieve plates 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
27	Ray phloem parenchyma is commonly seen in I. Dicots II. Monocots III. Gymnosperms IV. Pteridophytes I and II II and IV I and III II and IV Ans:I and III
28	[A]: Xylem is a complex tissue [R]: It has collocytes, parenchyma cells and Fibres 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
29	Radial system of xylem has I. Tracheids II. Vessels III. Axial parenchyma IV. Ray parenchyma V. Libriform fibres VI. Fibre tracheids III, IV I, II II, III, IV Only IV Ans:Only IV
30	Study the following table and choose the correct combination I and II III and IV I and III III and IV Ans:I and III
31	[A]: Tracheary elements with pitted thickenings are more rigid [R]: Their cell walls are heavily lignified 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
32	Arrange the following vessel elements that depicts the gradual increase in their plasticity. I. Vessel member with reticulate thickenings II. vessel element with Annular thickenings III. Vessel element with Scalariform thickenings IV. Vessel element with Helical thickenings III, I, IV, II III, I, II, IV I, III, II, IV IV, II, III, I Ans:III, I, II, IV
33	[A]: Vessels of stem are more narrower than the vessels of Root of the plant [R]: High auxin concentration quickens the differentiation of vessel elements. 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
34	[A]: Parenchyma is fundamental tissue [R]: All other tissues are embedded in Parenchyma 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
35	Lamellar collenchyma is seen in Datura Ocimum Sambucus Helianthus Ans:Sambucus
36	Unbranched sclereids are I. Brachysclereids II. Macrosclereids III. Filiform sclereids IV. Trichosclereids I, II, III II, III, IV IV, I, II I, III, IV Ans:I, II, III
37	This fibre lacks Lignin Sunhemp Jute Yucca fibres Flax Ans:Flax