The transverse section of a plant shows following anatomical features:
(a) Large number of scattered vascular bundles surrounded by bundle sheath.
(b) Large conspicuous parenchymatous ground tissue.
(c) Vascular bundles conjoint and closed.
(d) Phloem parenchyma absent.
Identify the category of plant and its part:

NEET-(Sept)2020 Anatomy-of-Flowering-Plants [class-xi ]

• Monocotyledonous stem
• Monocotyledonous root
• Dicotyledonous stem
• Dicotyledonous root
Correct Option: A  [ Monocotyledonous stem ]

Remark:

Which of the statements given below is not true about formation of Annual Rings in trees?

NEET-2019 Anatomy-of-Flowering-Plants [class-xi ]

• Annual ring is a combination of spring wood and autumn wood produced in a year.
• Differential activity of cambium causes light and dark bands of tissue - early and late wood respectively
• Annual rings are not prominent in trees of temperate region.
• Activity of cambium depends upon variation in climate.
Correct Option: C  [ Annual rings are not prominent in trees of temperate region. ]

Remark:

Phloem in gymnosperms lacks:

NEET-2019 Anatomy-of-Flowering-Plants [class-xi ]

• Both sieve tubes and companion cells
• Companion cells only
• Sieve tubes only
• Albuminous cells and sieve cells
Correct Option: A  [ ]

Remark:

Bulliform cells are responsible for:

NEET-2024 Anatomy-of-Flowering-Plants [class-xi ]

• Protecting the plant from salt stress.
• Inward curling of leaves in monocots.
• Providing large spaces for storage of sugars.
• Increased photosynthesis in monocots.
Correct Option: B  [ Inward curling of leaves in monocots. ]

Remark: Explanation NCERT PAGE NO. 94

In the given figure, which component has thin outer walls and highly thickened inner walls?

NEET-2024 Anatomy-of-Flowering-Plants [class-xi ]

• D
• C
• B
• A
Correct Option: B  [ C ]

Remark: Explanation: NCERT Page No.72 (Topic-6.1.1 Epidermal Tissue System)

Given below are two statements:

Statement I: Parenchyma is living but collenchyma is dead tissue.

Statement II: Gymnosperms lack xylem vessels but presence of xylem vessels is the characteristic of angiosperms.

In the light of the above statements, choose the correct answer from the options given below:

NEET-2024 Anatomy-of-Flowering-Plants [class-xi ]

• Both Statement I and Statement II are false
• Both Statement I and Statement II are true
• Statement I is false but Statement II is true
• Statement I is true but Statement II is false
Correct Option: C  [ Statement I is false but Statement II is true ]

Remark: Explanation: NCERT Page No.87,(Topic-6.1.2.2 Complex Tissues)