In dicot stem the vascular bundle is:-
1. Conjoint, open and with exarch protoxylem.
2. Conjoint, open and with endarch protoxylem.
3. Conjoint and closed.
4. Scattered, each surrounded by a sclerenchymatous bundle sheath.

Subtopic:  Vascular Tissue System |
 81%
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Bulliform cells:

1. Are found in dorsiventral leaves and help in photosynthesis.

2. Are found in dorsiventral leaves and help in minimizing water loss.

3. Are found in isobilatetral leaves and help in minimizing water loss.

4. Are found in isobilatetral leaves and help in photosynthesis.

Subtopic:  Monocot Leaf |
 77%
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The endodermis is absent or indistinct in the:-
1. Roots of all plants
2. Leaves of pteridophytes
3. Leaves of gymnosperms
4. Stems of woody plants

Subtopic:  Dicot Stem |
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The term 'bark' includes: 

I.      Phellogen

II.     Phellem

III.    Phelloderm

IV.     Secondary phloem

1.       I, II and III only

2.       I, II and IV only

3.       II, III and IV only

4.       I, II, III and IV only

Subtopic:  Activity of Cork Cambium |
 71%
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Identify the incorrect statement:

1.  The presence of vessels is a characteristic of angiosperms

2.  In roots the primary xylem is exarch

3.  Gymnosperms lack albuminous cells and sieve cells

4.  Bast fibers are generally absent in primary phloem

Subtopic:  Complex Tissue: Phloem |
 78%
From NCERT
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The given transverse section is of:

1. Monocot stem

2. Dicot stem

3. Monocot root

4. Dicot root

Subtopic:  Monocot Stem |
 81%
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The vascular bundle shown in the diagram is most likely to be seen in:

   

1. Monocot stem

2. Dicot stem

3. Monocot root

4. Dicot root

Subtopic:  Vascular Tissue System |
 80%
From NCERT
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The main function of the plant tissue shown below is:

  

1. Storage of nutrients
2. Providing buoyancy to submerged plants
3. Mechanical support to growing parts of a plant
4. Increase in the length of the plant

Subtopic:  Simple Tissue: Chollenchyma & Sclerenchyma |
 89%
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Consider the following statements:

In a monocot stem-

I: Hypodermis is collenchymatous.
II: Vascular bundle are collateral and closed.
III: Trichomes are usually absent.

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

Subtopic:  Monocot Stem |
 79%
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Consider the following statements about dicot leaf:

I: The epidermis which covers both the upper surface (adaxial epidermis) and lower surface (abaxial epidermis) of the leaf has a conspicuous cuticle.
II: More stomata present on upper surface.
III: Mesophyll is differentiated into palisade and spongy parenchyma.

Which of the above statements are true?

1. I and II only 2. I and III only
3. II and III only 4. I, II and III
Subtopic:  Dicot Leaf |
 78%
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