Question

A perennial plant differs from biennial in
A. Having underground perennating structure
B. Having asexual reproductive structures
C. Being tree species
D. Not dying after seasonal production of flowers

Answer 1

Perennial plants are those plants which can persist for many growing seasons. Biennial plants are those plants that have their complete lifecycle of two years, i.e., these types of plants die out after two years.

Step by step answer: Perennial plants are those plants that can live longer than two years. These plants go to seed every year. Biennial plants are those plants that require two growing seasons to mature and go to seed. There are a few perennial plants that are short-lived. These plants last only two to three years but because they self-seed readily, they seem to live longer. Such an example of a short-lived perennial is Rose. Other perennial plants such as Peonies are known to last for more than 100 years.
Biennial plants are gardening plants that have a two-year life cycle. Their growth begins with seeding, and then the growth of roots, shoots, stems, and leaves during the first growing season and then during its second growing season, the biennial plant grows completely with the formation of flowers, fruits and seeds. After their second growing season, these plants gradually reseed and died. Examples of such biennial plants are cabbage, Brussels sprouts, carrots, celery, lettuce, etc.
Hence, the correct option is D. Not dying after seasonal production of flowers.

Note: Another type of plant is Annual plants. These types of plants germinate and grow, producing fruits, flowers and seeds within one growing season and then die. Examples of such plants are maize, pea, watermelon, wheat, chickweed, etc.