Getting To Know Plants

(a) Roots absorb water and minerals from the soil.

(b) Stem holds the plant upright.

(c) Stem conducts water to the leaves.

(d) The number of petals and sepals in a flower can be equal or different.

(e) If the sepals of a flower are joined together, its petals are not necessarily joined together.

(f) If the petals of a flower are joined together, then the pistil may or may not necessarily joined to the petal.

(a) A leaf

(b) Tap Root

(c) A bell shaped flower

Yes, we can find a plant in our house as well as in our neighbourhood which has a long but a weak stem. Its name is money plant. It has a weak stem; hence it needs support. It is a climber.

Stem performs following functions:

i. It gives support to the plant.

ii. It transports water and minerals from roots to different parts of the plants.

iii. It transports food from leaves to other parts of the plant.

iv. It bears leaves, fruits and flowers.

In the given options, leaves of tulsi, coriander (dhania), China rose have reticulate venation.

If a plant has fibrous root, then the plant leaves likely to have Parallel venation. Example, wheat, grass, etc.

A picture of a plant with fibrous roots is attached.

If a plant has leaves with reticulate venation, then the plant likely to have tap root.

In a tap root, there is the main root, from which other roots sprout laterally. Example, carrot. The picture of tap root is given below:

Yes, we can recognize the leaves without seeing them. It is possible by taking an impression of the leaf. To get an impression, we put a leaf under a white paper. Hold the pencil tip sideways and rub it on the portion of paper having leaf below. You get

To get an impression, we put a leaf under a white paper. Hold the pencil tip sideways and rub it on the portion of paper having leaf below. You get the impression of the leaf with some lines on it. These lines on the leaf are called veins.

1) The design made by veins of a leaf is called leaf venation.

2) If we get the net-like design on both sides of midrib, then the leaf has reticulate venation.

3) If we get lines parallel to each other, then the leaf has parallel venation.

The names of the parts of a flower are- Petals, sepals, stamen (male reproductive organ) and Pistil (Female reproductive organ).

We have seen all these plants. Plants with flowers are:

Chilli, Jamun, Tomato, Guava, Tulsi Pomegranate

Mango Papaya Lemon Banana

Leaves produce the food for the plant. The process by which plant prepares its food is called photosynthesis.

We find ovary in pistil. It is the lowermost and swollen part of the pistil.

(i) Flowers with joined sepals: Hibiscus, Datura.

(ii) Flowers with separate sepals: China rose, mustard flower.