Question

Reproductive root taking part in reproduction are found in-
a. Dalbergia
b. Dahlia
c. Sweet potato
d. All of the above

Answer 1

Hint: Reproductive roots are also called as propagating adventitious roots. Some adventitious fleshy root grows buds that can evolve into new plants. These roots function as vegetative propagation.

Complete answer:
> Option A is incorrect. A fast-growing, hardy deciduous rosewood tree native to the Indian subcontinent and southern Iran, Dalbergia sissoo, commonly known as North Indian rosewood, is. They have a long taproot and several surface roots containing suckers. The root system includes suckers, and its extensive root structure makes it ideally suited to stabilise and control erosion in degraded areas and along rivers and streams. It is commonly used as a nitrogen fixation and reforestation plant.

> Option B is incorrect. The roots in Dahlia are fasciculated tuberous roots, since the plant's fibrous root system stores food in them for annual transformation into a tuft of tubers. Tuberous roots are broken down by means of pruning shears. Ensure that each divided root system has an active bud, or eye, that when planted will produce a new flower. The roots were known for both the nutritious inulin contained in them, and the antibiotic compounds accumulated in the tubers' flesh.

> Option C is incorrect. The sweet potatoes are in the plant family Ipomoea batatas potato, Solanaceae (nightshade) S, Convolvulaceae (morning glory). Unlike regular tubers, root vegetables are regarded as an important source of beta-carotene, the precursor to vitamin A (the root has undergone changes to store the food). But the root is defined as being a tuberous root. Both sweet and standard potatoes grow underneath the soil, but when it comes to shape, flavour and quality they are very different.

> Option D is correct. Often called reproductive roots, they perpetuate adventitious roots early. They form adventitious buds that grow up above the ground into shoots and produce new plants. Dahlia, Dalbergia, and the sweet potato are some examples of reproductive roots.

Hence, The correct answer is option (D).

Note: These roots help create the genetically identical offspring. Hence it is possible to retain the beneficial characteristics as there is no need of the two parents . It also offers an excellent method for economically less resources and in comparatively shorter time to propagate attractive plant varieties.