Specialised epidermal cells surrounding the guard cells are called ?
1. subsidiary cells
2. bulliform cells
3. lenticels
4. complementary cells
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyVascular bundles in monocotyledons are considered closed because
1. a bundle sheath surrounds each bundle
2. cambium is absent
3. there are no vessels with performations
4. xylem is surrounded all around by phloem
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA major characteristic of the monocot root is the presence of
1. open vascuiar bundles
2. scattered vascular bundles
3. vasculature without cambium
4. cambium sandwiched between phloem and xylem along the radius
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyYou are given a fairly old piece of dicot stem and a dicot root. Which of the following
anatomical structures will you use to distinguish between the two?
1. Secondary xylem
2. Secondary phloem
3. Protoxylem
4. Cortical cells
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyInterfascicular cambium develops from the cells of ?
1. medullary rays
2. xylem parenchyma
3. endodermis
4. pericycle
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLenticels are involved in
1. transpiration
2. gaseous exchange
3. food transport
4. photosynthesis
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAge of a tree can be estimated by?
1. its height and girth
2. biomass
3. number of annual rings
4. diameter of its heartwood
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe common bottle cork is a product of
(1) Dermatogens
(2) phellogen
(3) xylem
(4) vascular cambium
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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 & BiologyClosed vascular bundles lack
(1) ground tissue
(2) conjunctive tissue
(3) cambium
(4) pith
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology