Pith cavity occurs in the stem of ?
(1) Helianthus

(2) Zea mays

(3) Cucurbita   

(4) Dracaena

Subtopic:  Monocot Stem |
AIIMS - 2015
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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

Subtopic:  Complex Tissue: Xylem |
 61%
AIIMS - 2015
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

Subtopic:  Epidermal Tissue System | Monocot Leaf | Activity of Cork Cambium |
 81%
From NCERT
AIIMS - 2014
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Root cambium is derived from?

(1) primary meristem

(2) secondary meristem

(3) intercalary meristem

(4) apical meristem

 68%
From NCERT
AIIMS - 2013
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Glycolate induces opening of stomata in

(1) Presence of oxygen

(2) Low CO2 concentration

(3) High CO2 concentration

(4) Absence of CO2

Subtopic:  Stomata: 3 | Stomata |
 52%
AIIMS - 2010
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Which one of the following comprises only simple tissue?

1. Parenchyma, Collenchyma and Sclerenchyma

2. Parenchyma, Xylem and Collenchyma

3. Parenchyma, Xylem and Sclerenchyma

4. Parenchyma, Xylem and Phloem

Subtopic:  Tissue: Introduction & Classification (OLD NCERT) |
 96%
From NCERT
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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

Subtopic:  Meristematic Tissue:Classification (OLD NCERT) | Simple Tissue: Parenchyma | Simple Tissue: Chollenchyma & Sclerenchyma | Epidermal Tissue System |
 93%
From NCERT
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What is the destiny of primary xylem in a dicot root showing extensive secondary growth?

1. It is retained in the centre of the axis

2 It gets crushed

3. May or may not get crushed

4. It gets surrounded by primary phloem

Subtopic:  Secondary Growth in Root (OLD NCERT) |
 58%
From NCERT
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While removing the skin of a potato tuber, we remove

A. Periderm

B. Epidermis

C. Cuticle

D. Sapwood

Subtopic:  Activity of Cork Cambium |
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In which of the following pairs of parts of a flowering plant is epidermis absent?

A. Root tip and shoot tip

B. Shoot bud and floral bud

C. Ovule and seed

D. Petiole and pedicel

Subtopic:  Meristematic Tissue: Shoot Apex (OLD NCERT) | Meristematic Tissue: Root Apex (OLD NCERT) |
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