Sugarcane is normally grown by

You've sent the same questions again, brightgoddey973! No problem, here are the answers once more for clarity:

353. The onset of the reproductive age is called
The correct answer is B. Menarche.
Menarche is the term for the first menstrual period, which signifies the beginning of a female's reproductive capability.

354. The first time that the monthly bleeding occurs is called
The correct answer is B. Menarche.
This question is a rephrasing of the previous one; menarche specifically refers to the first occurrence of menstruation.

355. The most important part of the plant for continuation of the life of the species is
The correct answer is C. flower.
Flowers are the reproductive structures of angiosperms, responsible for producing seeds that ensure the continuation of the plant species.

356. The type of vegetative propagation seen in chrysanthemum is
The correct answer is B. sucker.
Chrysanthemums commonly reproduce through suckers, which are new shoots that grow from the base of the plant.

357. Successfully grafted plants bear the flowers and fruits characteristic of the
The correct answer is A. Scion.
The scion is the upper part of the plant that is grafted onto the rootstock, and it determines the genetic characteristics of the flowers and fruits.

358. Sugarcane is normally grown by
The correct answer is A. Cutting.
Sugarcane is typically propagated vegetatively by planting sections of its stem, known as cuttings.