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Diameter of pollen grain is Option 1 : 20–50 μmOption 2 : 25–50 μmOption 3 : 30–50 μmOption 4 : 10–50 μm
READ MORE +Diameter of pollen grain is Option 1 : 20–50 μmOption 2 : 25–50 μmOption 3 : 30–50 μmOption 4 : 10–50 μm
READ MORE +Male gametophyte in angiosperm is represented by Option 1 : AntherOption 2 : AndroeciumOption 3 : MicrosporangiumOption 4 : Pollen grain
READ MORE +Q. A 0.5 m × 0.5 m square concrete pile is to be driven in a homogeneous clayey soil having undrained shear strength, cu = 50 kPa and unit weight, γ = 18.0 kN/m3. The design capacity of the pile is 500 kN. The adhesion factor α is given as 0.75. The length of the pile required for the above design ...
READ MORE +Pollen grains are Option 1 : Microspore tetradOption 2 : Dehydrated microsporesOption 3 : Megaspore tetradOption 4 : Pollen mother cells
READ MORE +Q. The figure shows a simply supported beam PQ of uniform flexural rigidity EI carrying two moments M and 2M. The slope at P will be (A) 0 (B) ML/(9EI) (C) ML/(6EI) (D) ML/(3EI) Ans: ML/(6EI) Sol:
READ MORE +Q. A plate in equilibrium is subjected to uniform stresses along its edges with magnitude 𝜎𝑥𝑥 = 30 MPa and 𝜎𝑦𝑦 = 50 MPa as shown in the figure The Young’s modulus of the material is 2×1011 N/m2 and the Poisson’s ratio is 0.3. If 𝜎𝑧𝑧 is negligibly small and assumed to be zero, then the ...
READ MORE +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)
READ MORE +Formation of pollen from pollen mother cell is referred to as Option 1 : PollenogenesisOption 2 : MegasporogenesisOption 3 : MicrosporogenesisOption 4 : Ovulation
READ MORE +Q. A cylinder of radius 250 mm and weight, W = 10 kN is rolled up an obstacle of height 50 mm by applying a horizontal force P at its centre as shown in the figure. All interfaces are assumed frictionless. The minimum value of P is (A) 4.5 kN (B) 5.0 kN (C) ...
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
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