Question

All the florets are disc florets in _________.
A. Launea
B. Vernonia
C. Sunflower
D. Tridax

Answer 1

Vernonia is an enormous class of around 1000 species happening in America, Africa, Asia, Madagascar and Australia, with roughly 50 species in South Africa. Development shapes in this variety range from low-developing herbs through bushes and climbers to trees. The family Vernonia gets its name from the English botanist William Vernon who gathered plants in America and died in 1711. The species is named for Ernest Galpin (1858-1941), financier and novice botanist who gathered the short example from Saddleback Mountain close to Barberton in Mpumalanga.

Complete answer:
Vernonia is usually known as curtain creeper and is a climber. This is an inquisitive individual from the Sunflower family. It is a creeper which thinks that it's hard to move without help. In this way, the thin stems move up and afterward tumble down perfectly over a divider or railing. The delicate stems, all hanging down structure a shade, thus the name curtain creeper. Essentially, it is a foliage plant, developed basically for its propensity for framing a green curtain.Vernonia inclines toward full sun and small watering. The plant is to some degree dry season . Stem cutting is an appropriate propagation strategy for it. It is an exceptionally helpful and mainstream climber for screening.

So, the correct answer is option B.

Note:
Vernonia: This herbaceous perennial grows up to 60cm tall, with pad like clusters of leafy yearly stems growing up from an enduring rootstock. The stemless, lanceolate leaves are furry. The little (up to 25mm over) purple inflorescences show up from August to February. White-bloomed structures have sometimes been recorded. Just like the case with all individuals from the daisy family, these 'blossoms' are really composed of numerous little florets. Not at all like the exemplary daisy which has two various types of florets, the external ray florets or 'petals', and the central plate florets, individuals from the variety Vernonia have just one kind of floret. The seeds are delivered in little natural products appended to parachute-like 'pappus' hairs which help in wind conveyance of the seed.