Question

A biennial plant is one which ……………………………….?
A. Lives for two years but flowers towards the end of the second year
B. Produces two sets of flowers in a year
C. Grows during the second year from seeds shed turning the previous year
D. Lives and grow from year to year

Answer 1

Hint: Plants are the main source of food and provide cereals, pulses, vegetables and fruits. Green plants are called autotrophs because they make or synthesize the food of its own by the presence of sunlight, water and CO₂ with the help of green colour pigment chlorophyll because it is used to trap the sunlight and the process called photosynthesis. All the animals and human beings are dependent on the plants for their food and their survival.

Complete answer:
Plants include all the multicellular, photosynthetic producers of the biosphere. They are primarily aquatic and land plants. Plants are divided into two systems- root and shoot system.
On the basis of life cycle plants are classified into three types- annuals, biennials and perennials.
Biennials plants are plants which require two years to complete their life span. In one year only leaves, stems, roots (vegetative growth) are shown but in the second year reproductive growth (stem elongation, flowering and seed formation) occurs and the entire plant dies so they are called monocarpic plants. They require a lot of maintenance. The stems of biennial plants are very short and the leaves are low to the ground or on the surface of the soil, which forms a rosette. Biennials that are edible grow for only one year and are called annuals because annuals require one year to complete their life cycle. For example- carrot, cabbage, onion, beetroot, etc. They are herbaceous.

So, the correct answer is “Option A”.

Note:
Annuals are plants which require only a single season or year for their life cycle while perennials are the plants that have a long lifespan and also are woody.
Examples of annuals plants are corn, wheat, rice and pulses. Examples of perennial plants are- rose, lilies, etc.