Question

Small plants, which live for one or two season, are called as
a. Herbs
b. Shrubs
c. Trees
d. Algae

Answer 1

Hint: They are perennial, normal plants with soft, delicate stem and aromatic properties. Due to medicinal properties, they are also used as a part of various natural medicines. All the aerial parts of the plant die back to the ground at the end of each growing season.

Complete answer:
To answer this question we need to have knowledge about growth habits. Growth habits refer to plant’s growth and development. It also refers to the change in plant’s height, shape as well as the kind of growth it undergoes in which genetic as well as environmental factors play an important role.
Plants are classified on the basis of their height, and number of seasons they survive into- herbs, shrubs and trees.

> Herbs: they are short-sized plants with delicate, green, fragile stems without the woody tissues. They complete their life cycle inside a couple of seasons. For the most part, they have barely any branches or are branchless. These can be handily removed from the dirt. They contain enough nourishing advantages, including nutrients and minerals, making them a part of a balanced diet.

> Shrubs: They are bushy medium-sized, woody plants and bigger than herbs but shorter than trees usually ranging between 6m to 10m tall. Their life span depends on the species.

> Trees: They are tall plants with thick, woody, hard stems called trunk that give rise to branches. They bear leaves, flowers, fruits. They have a life span of several years.

> Algae: They are a group of aquatic photosynthetic eukaryotic organisms ranging from microscopic (microalgae), to large seaweeds (macroalgae). Algae are a source of crude oil, food and a number of pharmaceutical and industrial products for humans.
Examples:

Examples:

Name of plant	Herb/shrub/tree
Rice	Herb
Mint	Herb
Rose	Shrub
Lemon	Shrub
Coconut	Tree
Papaya	Tree

Therefore, the answer is a, herbs.

Additional information:
- Biennial plant- Certain plants take two years to complete their life cycle. In the first year, only roots, leaves and stem grow while in the second one, flowers are formed, seeds are produced and they eventually die.
- Perennial plants- Plant that lives for more than two years but produces flowers every year. Also, their stems usually die in winters, but since the roots do not die, they regenerate the following year.

Note: There are two more types called climbers and creepers. Both the climbers and creepers are weak-stemmed plants that cannot grow erect without support. Climbers cannot stand upright; therefore, use external support to grow vertically. Creepers grow horizontally with the help of an external support.