1. annual plants continue to grow indefinitely after flowering. true / false.
2. the perianth consists of the calyx and corolla of the flower. true / false.
3. vegetables such as tomatoes and cucumbers are considered fruits whereas broccoli and celery are not. true / false.

1. false

2. true

3. true

Explanation:

1. Annuals are the plants that complete their life cycle in one season or one year. These are the herbaceous plants that grow, flower and die in one season. Examples of annuals are geranium, marigold, etc.  

2. In a flower, the whorl of petals is called corolla while the whorl of the sepal is known as calyx. In flowers, calyx and corolla together make perianth. The calyx is outer to corolla in a perianth.  

3. The fruit is a matured and ripened ovary that provides protection to the seeds present in it. Fruits are formed after fertilization and may contain one or more seeds. Tomatoes are the simple berry fruits while cucumber is pepo, the modified berries. Broccoli is the flower head while celery is the edible leaf.  

is called echinoderms

answer; i believe the correct answer is (a)0