The chief water conducting elements of xylem in gymnosperms are

1. vessels

2. fibres

3. transfusion tissue

4. tracheids

Subtopic:  Complex Tissue: Xylem |
 65%
From NCERT
NEET - 2010
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Which one of the following is not a lateral meristem?

1. Cork cambium

2. Interfascicular cambium

3. Phellogen

4. Intercalary meristem

Subtopic:  Meristematic Tissue:Classification (OLD NCERT) |
 75%
From NCERT
NEET - 2010
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Heartwood differs from sapwood in 

1. presence of rays and fibres

2. absence of vessels and parenchyma

3. having dead and non-conducting elements

4. being susceptible to pests and pathogens

Subtopic:  Types of Wood (OLD NCERT) |
 87%
From NCERT
NEET - 2010
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In barley stem, vascular bundles are

1. open and scattered

2. closed and scattered

3. open and in a ring

4. closed and radial

Subtopic:  Monocot Stem |
 67%
NEET - 2009
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Guard cells help in ?

1. protection against grazing

2. transpiration

3. guttation

4. fighting against infection

Subtopic:  Epidermal Tissue System |
 88%
From NCERT
NEET - 2009
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Palisade parenchyma is absent in leaves of :-

1. Sorghum

2. mustard

3. soybean

4. gram

Subtopic:  Monocot Leaf |
 53%
NEET - 2009
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Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of

1. xerophytes

2. mesophytes

3. epiphytes

4. hydrophytes

Subtopic:  Tissue: Introduction & Classification (OLD NCERT) |
 53%
NEET - 2009
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Vascular tissues in flowering plants develop from

(1) phellogen

(2) plerome

(3) periblem

(4) dermatogen

Subtopic:  Activity of Cork Cambium |
NEET - 2008
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Passage cells are thin-walled cells found in:

1. endodermis of roots facilitating rapid transport of water from cortex to pericycle

2. phloem elements that serve as entry points for substances for transport to other plant

parts

3. testa of seeds to enable emergence of growing embryonic axis during seed

germination

4. central region of style through which the pollen tube grows towards the ovary

Subtopic:  Anatomy of Root |
 69%
NEET - 2007
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For a critical study of secondary growth in plants, which one of the following pairs is

suitable:

1. Sugarcane and sunflower

2. Teak and pine

3. Deodar and fern

4. Wheat and maiden hair fern

Subtopic:  Dicot Stem | Secondary Growth in Root (OLD NCERT) |
NEET - 2007
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