CBSE 2025, Set 1

Question

Edvaya · Accepted Answer

The correct answer is (i)-(c), (ii)-(d), (iii)-(b), (iv)-(a). **SOLUTION** * **(i) Lady bird beetle:** Acts as a biocontrol agent against **(c) Aphids**. * **(ii) Mycorrhiza:** Formed by fungi belonging to the genus **(d) *Glomus***, which absorb phosphorus from the soil. * **(iii) Biological control:** The free-living fungus **(b) *Trichoderma*** is an effective biocontrol agent for several plant pathogens. * **(iv) Biogas:** Produced by methanogens like **(a) *Methanobacterium*** during the anaerobic breakdown of organic matter. Thus, the correct match is **(i)-(c), (ii)-(d), (iii)-(b), (iv)-(a)**.

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Column-A	Column-B
(i) Lady bird beetle	(a) Methanobacterium
(ii) Mycorrhiza	(b) Trichoderma
(iii) Biological control	(c) Aphids
(iv) Biogas	(d) Glomus