When phloem strand or layers are included in the secondary xylem is called ?

1. Abaxial phloem
2. Adaxial phloem
3. Interxylary
4. Protoxylem
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Answer: C
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The elongated cells with characteristics sieve area in their walls are called ?

1. Sieve elements
2. Tracheary elements
3. Interxylary
4. Protoxylem
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Answer: A
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A thin inner layer is present close to middle lamella in sieve elements is called ?

1. Nacreous layer
2. Xylem layer
3. Phloem layer
4. Upper layer
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Answer: A
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The thin walled parenchyma cells closely associated the sieve elements is called ?

1. Sieve elements
2. Tracheary elements
3. Companion cells
4. Sclerenchyma cells
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Answer: C
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The phloem formed as a result of secondary growth is called ?

1. Primary Phloem
2. Secondary phloem
3. Tertiory phloem
4. All
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Answer: B
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Which of the following is form the outermost layer of cells on the primary plant body ?

1. Epidermis
2. Endodermis
3. Ectodermis
4. Hypodermis
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Answer: A
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When epidermis have single layer is called ?

1. Epidermis
2. Endodermis
3. Ectodermis
4. Hypodermis
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Answer: D
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When epidermis composed of multiple layer is ?

1. Epidermis
2. Endodermis
3. Ectodermis
4. Multiseriate epidermis
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Answer:
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The root epidermis is ?

1. Rhizodermis
2. Endodermis
3. Ectodermis
4. Multiseriate epidermis
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Answer:
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Gaseous exchange occurred through ?

1. Stone cells
2. Stomata
3. Endodermis
4. Epiblema
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Answer: B
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