The desert grasses, often curls their leaf to minimise water loss due to presence of 

(a) Spines

(b) Palisade parenchyma

(c) Bundle sheath cells

(d) Bulliform cells

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Tyloses are balloon-like outgrowths in the lumen of secondary xylem tracheids and vessel of duramen region. These are actually:-
(a) outgrowth of vessels of xylem
(b) ingrowth of vessels
(c) outgrowth of parenchymatous cell
(d) swelling of xylem fibres for no function

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Pith cavity occurs in the stem of ?
(a) Helianthus (b) Zea mays
(c) Cucurbita   (d) Dracaena

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Which of the following statement is true ?

1. Vessels are unicellular and with narrow lumen

2. Vessels are multicellular and with wide lumen

3. Tracheids are unicellular and with wide lumen

4. Tracheids are multicellular and with narrow lumen

Please attempt this question first.

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Match the Column I and II.

Column I

Column II

A.  Bulliform cells

1.   Stomata

B.  Guard cells

2.   Aerating pore

C.  Lenticels

3.   Accessory cells

D.  Subsidiary cell

4.   Isobilateral cells


        A  B  C  D
(a)   1   2  3   4
(b)   3   1  2   4
(c)   4   1  2   3
(d)   4   3  2   1

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Root cambium is derived from?

(a) primary meristem
(b) secondary meristem
(c) intercalary meristem
(d) apical meristem

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Glycolate induces opening of stomata in

(a) Presence of oxygen

(b) Low CO2 concentration

(c) High CO2 concentration

(d) Absence of CO2

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Two adjacent vessel and tracheid exchange sap through

A. Perforated end walls

B. Pits

C. Intercellular spaces

D. Intracellular spaces and parenchyma

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Which one of the following comprises only simple tissue?

A. Parenchyma, Collenchyma and Sclerenchyma

B. Parenchyma, Xylem and Collenchyma

C. Parenchyma, Xylem and Sclerenchyma

D. Parenchyma, Xylem and Phloem

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Match the following

A. Meristem i. Photosynthesis, storage

B. Parenchyma ii. mechanical support

C. Collenchyma iii. Actively dividing cells

D. Sclerenchyma iv. stomata

E. Epidermal tissue v. Sclereids

A. A-i, B-iii, C-v, D-ii, E-iv

B. A-iii, B-i, C-ii, D-v, E-iv

C. A-ii, B-iv, C-v, D-i, E-iii

D. A-v, B-iv, C-iii, D-ii, E-i

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Difficulty Level: