In land plants, the guard cells differ from other epidermal cells in having:-
1. mitochondria
2. endoplasmic reticulum
3. chloroplasts
4. cytoskeleton
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe cork cambium, cork and secondary cortex are collectively called
1. phellogen
2. periderm
3. phellem
4. phelloderm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe chief water conducting elements of xylem in gymnosperms are
1. vessels
2. fibres
3. transfusion tissue
4. tracheids
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following is not a lateral meristem?
1. Cork cambium
2. Interfascicular cambium
3. Phellogen
4. Intercalary meristem
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHeartwood differs from sapwood in
1. presence of rays and fibres
2. absence of vessels and parenchyma
3. having dead and non-conducting elements
4. being susceptible to pests and pathogens
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn barley stem, vascular bundles are
(1) open and scattered
(2) closed and scattered
(3) open and in a ring
(4) closed and radial
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGuard cells help in ?
1. protection against grazing
2. transpiration
3. guttation
4. fighting against infection
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPalisade parenchyma is absent in leaves of :-
1. Sorghum
2. mustard
3. soybean
4. gram
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyReduction in vascular tissue, mechanical tissue and cuticle is characteristic of
1. xerophytes
2. mesophytes
3. epiphytes
4. hydrophytes
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyVascular tissues in flowering plants develop from
(1) phellogen
(2) plerome
(3) periblem
(4) dermatogen
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology