Bark non-technically refers to tissues which lies

(1)exterior to vascular cambium

(2)exterior to cork cambium

(3)exterior to primary phloem

(4)All of the above

Subtopic:  Activity of Cork Cambium |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


How many of the followings constitute the bark?

( secondary phloem, secondary cortex, cork cambium, complimentary cells, epidermis, periderm )

(1)6

(2)5

(3)4

(4)3

Subtopic:  Activity of Cork Cambium |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Which of the following is true for lenticels

(1)lens shaped opening

(2) occur in most woody trees

(3)permit exchange of gases

(4)All of the above

Subtopic:  Activity of Cork Cambium |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


The function of lenticels are

(1)exchange of gases

(2)helps in transpiration

(3)helps in vegetative reproduction

(4)Both a and b

Subtopic:  Activity of Cork Cambium |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


In dicot root the complete ring of vascular bundle is formed by

(1)conjunctive tissue

(2)pericycle

(3)Endodermis

(4)Both A and B

Subtopic:  Secondary Growth in Root |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


In dicot root vascular cambium is _________in origin.

(1)Primary

(2)Secondary

(3)Both A and B

(4)neither primary nor secondary

Subtopic:  Secondary Growth in Root |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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Difficulty Level:


The shape of the vascular bundle is __________in the beginning and later it becomes ___________in dicot root.

(1)wavy, circular

(2)circular, wavy

(3)circular , rectangular

(4)wavy, and trapezoid

Subtopic:  Secondary Growth in Root |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


In dicot roots, secondary phloem is formed towards the _________ and secondary xylem is formed towards the __________ by the activity of vascular cambium.

(1)periphery, centre

(2)centre, periphery

(3)innerside, outerside

(4)Both B and C

Subtopic:  Activity of Vascular Cambium |
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


There are _________types of medullary rays formed in dicot roots during secondary growth.

(1)one

(2)two

(3)three

(4)many

Subtopic:  Ground Tissue System | Activity of Cork Cambium |
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Difficulty Level:


The common medullary rays between dicot stem and root is

(1)primary medullary rays

(2)secondary medullary rays

(3)Both A and B

(4)None of the above

Subtopic:  Activity of Cork Cambium |
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NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level: