Question

Stem tendrils are found in:

(i) Antigonon

(ii) Clematis

(iii) Gloriosa

(iv) Lathyrus

(v) Passiflora

(vi) Vitis

• A. (i) and (ii)
• B. (iii) and (iv)
• C. (i), (v) and (vi)
• D. (ii), (iii), and (iv)

Answer 1

Answer:

C. (i), (v) and (vi)

Stem tendrils are found in Antigonon, Passiflora, and Vitis among the given options. These tendrils are modified stems that originate from axillary or terminal buds and help weak-stemmed plants climb by coiling around supports. While Gloriosa also has tendrils, they are leaf tendrils, not stem tendrils. 

• (i) Antigonon: This genus of flowering plants has stem tendrils that aid in climbing. 

• (ii) Clematis: While some plants in the genus Clematis can use tendrils for support, they are typically leaf tendrils, not stem tendrils. 

• (iii) Gloriosa: This plant has tendrils, but they are modified leaves, not stem tendrils. 

• (iv) Lathyrus: This genus, also known as the sweet pea, has leaf tendrils. 

• (v) Passiflora: Also known as the passionflower, this plant develops stem tendrils from its axillary buds for climbing. 

• (vi) Vitis: This genus includes grapevines, which possess stem tendrils derived from the apical bud to support their climbing habit.