Conifers are adapted to tolerate extreme environmental conditions because of
(1) broad hardy leaves
(2) superficial stomata
(3) thick cuticle
(4) the presence of vessels
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following statements is wrong?
(1) Algae increases the level of dissolved oxygen in the immediate environment
(2) Algin is obtained from red algae and carrageen from brown algae
(3) Agar-agar is obtained from Gelidium and Gracilaria
(4) Laminaria and Sargassum are used as food
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn bryophytes and pteriodophytes, transport of male gametes requires
1. insects
2. birds
3. water
4. wind
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect the correct statement.
(1) Salvinia, Ginkgo and Pinus all are gymnosperms
(2) Sequoia is one of the tallest trees
(3) The leaves of gymnosperms are not well adapted to extremes of climate
(4) Gymnosperms are both homosporous and heterosporous
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyChromatophores take part in
(1) photosynthesis
(2) growth
(3) movement
(4) respiration
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following shows isogamy with non-flagellated gametes?
(1) Sargassum
(2) Ectocarpus
(3) Ulothrix
(4) Spirogyra
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is responsible for peat formation?
(1) Marchantia
(2) Riccia
(3) Funaria
(4) Sphagnum
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMale gametophyte with least number of cells is
(1) Pteris
(2) Funaria
(3) Lilium
(4) Pinus
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect the wrong statement.
(1) Isogametes are similar in structure, function and behaviour
(2) Anisogametes differ either in structure, function and behaviour
(3) In oomycetes female gamete is smaller and motile, while male gamete is larger and non-motile
(4) Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIsogamous condition with non-flagellated gametes is found in
(1) Chlamydomonas
(2) Spirogyra
(3) Volvox
(4) Fucus
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology