Yes, the stem of a plant can be compared with a street with two-way traffic because of the following reasons :
(i) It carries water and minerals from the roots to other parts in upward direction.
(ii) It carries food from the leaves to other parts of the plant.

Plants are characterised into three types on the basis of several features. One of the features is "Type of stem" :
Trees: They are tall, have hard, thick and woody stems.
Shrubs: They are of medium height, have hard and woody stems.
Herbs: They are short and have tender, green and short stems.

Roots absorb minerals and water from the soil. These are needed for the manufacture of food by plant leaves. So, roots are necessary to keep the plant healthy and alive.

Paheli is watering the plants correctly. She is sprinkling water on the roots, from where it can travel to all other parts of the plant.

From the options given in the question, leaves of tulsi, coriander and China rose have reticulate venation.

Life is not possible without plants. We should save plants. Plants give us oxygen which is essential for life. They provide us raw materials for various purposes. They are the house of many birds and animals.

The unwanted plants growing in the fields are called weeds.

Weeds are the unwanted plants, which grow in the fields, lawns or in pots. These plants are not grown by the farmers.

Pistil consists of stigma, style and ovary.

Wrong statements :
(a) Anther is a part of the pistil.
Correct statement: Anther is a part of the stamen.
(b) The visibleparts of a bud are the petals.
Correct statement: The visible parts of a bud are the sepals.
(d) Leaves perform the function of transpiration only.
Correct statement: Leaves perform the functions of both photosynthesis and transpiration.

Characteristics of plants are :
(i) They cannot move from one place to another.
(ii) They can prepare their own food.
(iii) These are the living organisms on the earth which are responsible for the formation of food for all the living forms directly or indirectly.
(iv) All other organisms on the earth depend on the plants and their products for their survival.
(v) Plants grow in the soil from where they take nutrients for their growth and propagation.

A leaf is a thin expanded outgrowth arising from the node of a stem. The part of a leaf by which it is attached to the stem is called a petiole. The broad green part of the leaf is called lamina. The lines on the leaf are called veins. The thick vein in the middle of the leaf is called the midrib. The design made by the veins on the leaf is called venation. H the design is net-like, it is termed as reticulate venation whereas if the veins are parallel to each other, it is termed as parallel venation.

(a) In the given figure:
(i) Petiole (ii) Midrib (iii) Lamina (iv) Vein
(b) The leaf has reticulate venation, the veins in leaf occur in an irregular way forming a net-like structure.
(c) Grass leaves have parallel type of venation. The vein run parallel to each other on both sides of midrib.