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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA. | Companion cells help in maintaining the pressure gradient in the sieve tubes. |
B. | Gymnosperms lack vessels in their xylem |
C. | The xylem vessels are devoid of cytoplasm |
D. | Xylem fibres may be septate or aseptate |
E. | A mature sieve element in phloem possesses cytoplasm, vacuole and nucleus. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPhloem in gymnosperms lacks:
1. Both sieve tubes and companion cells
2. Albuminous cells and sieve cells
3. Sieve tubes only
4. Companion cells only
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCompanion cells are closely associated with:
1. Sieve elements
2. Vessel elements
3. Trichomes
4. Guard cells
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology