29. (1)

80. (1)

The occurrence of abundant root nodules in clumps or root bunches was noticed in
Casuarina equisetifolia.

Casuarina equisetifolia is an effective wind break.

Rhizobium is associated with nodulation which helps in nitrogen fixation in Casuarina
equisetifolia.

(ಹ) (1) is correct and (2) is wrong
(B) (8) is correct and (1) is wrong
(C) (1) and (2) are correct

(0) All are correct

The top-down method of nanoparticle synthesis involves condensation of atoms in the
gas phase or molecular phase or solution allowing for the precursor particle to grow into
the size of a nanoparticle.

In the bottom-up approach nanoparticles are synthesized by massive solid into smaller
portions till the nano-sized particles are obtained.

(^) (1) is correct (B) (2) is correct

(C) (1) and (2) are correct (D) All the above options are wrong

In conventional tillage, a moldboard plough inverts the upper soil horizon, burying all
plant residues and producing a bare soil surface.

A chisel plough, one type of conservation tillage implement, stirs the soil but leaves a
good deal of Crop residues.

An equipment, “no-till planter’s rolling furrow openers” cut the slot for planting
through the mulched residue of the earlier crop and soil into which the seed is planted
at a depth set by the dept wheel of the equipment.

(^) (J) and (2) are wrong (B) (1), (2) and (8) are correct
(C) (J), (2) and (8) are wrong (D) (1) and (8) are correct

81. A desirable choice to reduce runoff trap eroded soil materials and stabilize slopes :

002/2024

(ಹ) Rice and maize-based cropping system
(B) Tapioca with ground nut along the slope
(C) Vetiver planting along the border of the slope

(D) None of the above is correct