Pollen grains can be preserved as fossil because Option 1 : They vary from species to speciesOption 2 : They have variety of architectureOption 3 : They are made up of sporopolleninOption 4 : They exhibit a fascinating array of pattern and design
Pollen grains can be preserved as fossil because Read More »
Sporopollenin is Option 1 : Most resistant organic matter knownOption 2 : Present in exine of pollen grainOption 3 : Absent in the germ pole of pollen grainOption 4 : All of these
Exine of pollen is(A) Hard outer layer of pollen grain(B) Most resistant organic matter known.(C) Layer made up of sporopollenin.(D) Layer which can withstand high temperature, strong acids and alkali.(E) Layer which cannot be degraded by any known enzyme. Option 1 : A and BOption 2 : A, B, C and DOption 3 : A,
Exine of pollen is Read More »
Pollen grains are Option 1 : SphericalOption 2 : OvalOption 3 : Generally sphericalOption 4 : Irregular
Diameter of pollen grain is Option 1 : 20–50 μmOption 2 : 25–50 μmOption 3 : 30–50 μmOption 4 : 10–50 μm
Diameter of pollen grain is Read More »
Male gametophyte in angiosperm is represented by Option 1 : AntherOption 2 : AndroeciumOption 3 : MicrosporangiumOption 4 : Pollen grain
Male gametophyte in angiosperm is represented by Read More »
Pollen grains are Option 1 : Microspore tetradOption 2 : Dehydrated microsporesOption 3 : Megaspore tetradOption 4 : Pollen mother cells
Which type of cell division occurs in the cell of sporogenous tissue to form microspore? Option 1 : Reduction divisionOption 2 : Equational divisionOption 3 : AmitosisOption 4 : Both (a) and (b)
Which type of cell division occurs in the cell of sporogenous tissue to form microspore? Read More »
Formation of pollen from pollen mother cell is referred to as Option 1 : PollenogenesisOption 2 : MegasporogenesisOption 3 : MicrosporogenesisOption 4 : Ovulation
Formation of pollen from pollen mother cell is referred to as Read More »
Sporogenous tissue of microsporangia is Option 1 : Groups of compactly arranges homogenous cellsOption 2 : Occupies the centre of microsporangiumOption 3 : Present inside young antherOption 4 : All the above
Sporogenous tissue of microsporangia is Read More »
