Siphonogamy in traceophytes...

Siphonogamy in traceophytes

A

eliminates dependence on water

B

brings pollen grains together

C

carries spores

D

protects embryo

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The correct Answer is:

A

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Which one of the following has not changed for the last several thousa...
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Largest ovules, largest male and female gametes and tallest trees are ...
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Siphonogamy in traceophytes
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Cycas is a
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The cortex and pith of stem Cycas serves as a source of 'Sago' which i...
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Cycas has the largest
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Cycas is
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Organised female cone is absent in
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Cycas differs from Pteris in having
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Coralloid roots of Cycas are useful in
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Coralloid roots of Cycas possess a symbiotic alga
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Phloem of gymnosperms differ from angiosperms in
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Foliage leaves (needles) in Pinus are brone by
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At the time of dehiscence winged pollen grain of Pinus is
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Simplest and highly reduced archegonium is found in
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Microsporangia of Cycas occur over microsporophyll
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Number of generations present in Pinus seed are
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Ploidy in wing of pollen grain and wing of seed of Pinus is
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The phenomenon of sulphur shower in pine forest is due to
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Which is homologous?
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