Which of the following is a transgenic crop? MCQ with Answer and Explanation

Explanation:
Adventitious roots arise from non-root tissues like stems, leaves, or branches. Examples: prop roots of banyan, stilt roots of maize, aerial roots of orchids. Taproot and fibrous roots develop from the radicle.

Explanation:
When both parents are heterozygous (Tt × Tt), the offspring genotypes are TT (25%), Tt (50%), and tt (25%). Since tall (T) is dominant over dwarf (t), both TT and Tt are tall, resulting in 3 tall : 1 dwarf phenotypic ratio. The genotypic ratio is 1:2:1. 9:3:3:1 is the dihybrid phenotypic ratio. 1:1 ratio is seen in test cross (Tt × tt).

Explanation:
A lichen is a classic example of mutualism between a fungus (mycobiont) and an alga or cyanobacterium (phycobiont). The algal partner performs photosynthesis and provides organic food to the fungus. In return, the fungal partner provides a protective environment, absorbs water and minerals, and anchors the lichen to the substrate. Mycorrhiza is a mutualism between fungi and plant roots, and Rhizobium is a mutualism between bacteria and legume roots.