Botany · Anatomy of Flowering Plants
NEET (UG) 2023 — Question 158
Identify the correct statements:
A. Lenticels are the lens-shaped openings permitting the exchange of gases.
B. Bark formed early in the season is called hard bark.
C. Bark is a technical term that refers to all tissues exterior to vascular cambium.
D. Bark refers to periderm and secondary phloem.
E. Phellogen is single-layered in thickness.
In the light of the above statements, choose the correct answer from the options given below :
- Option A:Correct
A and D only
- Option B:
A, B and D only
- Option C:
B and C only
- Option D:
B, C and E only
Answer: A
Step-by-step solution
Lenticels are lens-shaped openings that permit gas exchange between the outer atmosphere and internal tissues of the stem, so statement A is correct. Bark formed early in the season is called early or soft bark, not hard bark, so statement B is incorrect. Bark is a non-technical term referring to all tissues exterior to the vascular cambium, so statement C is incorrect. Bark refers to a number of tissue types, including periderm and secondary phloem, so statement D is correct. Phellogen is a couple of layers thick, not single-layered, so statement E is incorrect. Therefore, only statements A and D are correct, so the correct answer is A.
Answer key and solution verified before publishing.
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- Exam
- NEET (UG) 2023
- Paper
- 2023 paper
- Subject
- Botany
- Chapter
- Anatomy of Flowering Plants
- Topic
- Secondary growth