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Transcript
00:00Parts of a Plant
00:06A plant consists of four parts.
00:09Roots,
00:11stem,
00:13leaves
00:16and flowers.
00:20Each part plays an important role.
00:25The Different Parts of a Plant
00:27Roots of a plant mostly grow under the soil.
00:37The roots hold the plant firmly to the ground,
00:41absorb water, salts, minerals and other nutrients from the soil
00:49and transport these up to the stem of the plant.
00:52Types of Roots
00:55A. Tap Roots
00:58B. Fibrous Roots
01:03Tap roots have a main or central root from which smaller, thinner roots arise laterally.
01:14Most trees and vegetables like radish and carrot have tap roots.
01:19Fibrous roots have thin, branching roots arising from the base of the stem.
01:29Most of the grasses and ferns have fibrous roots.
01:36Coconut
01:38Banana
01:40Grass
01:43Onion have fibrous roots.
01:45The stem grows upward from the roots.
01:50The stem holds the plant erect and carries water and nutrients from the roots to other parts of the plant.
02:03Some of the stems are modified to support the roots.
02:08Some of the stems are modified to store food.
02:14Flowers, leaves and fruits grow on the stem.
02:24Sugarcane
02:26Potato
02:28Ginger
02:30Onion
02:31Lotus root are stems that we eat.
02:38The leaves of a plant are its kitchen as chlorophyll.
02:43The green pigment in the leaves traps sunlight to make food.
02:52The plant exchanges gases through the leaves.
02:57The plant exchanges gases through the stomata.
03:05In some plants, the leaves are modified in order to store food.
03:15Spinach, celery, coriander and mint are some leaves that we eat.
03:28A flower is the most attractive and colourful part of a plant.
03:36We often see butterflies, bees and other insects visiting flowers.
03:49They are attracted by the bright colours and the pleasant scent of the flower.
03:55Flowers have nectar in them.
04:00This nectar is food for the bees and butterflies.
04:09Pollination
04:11The transfer of pollens, a yellow and powdery substance from one flower to other flowers of the same plant or other plants with the help of butterflies, air or birds is called pollination.
04:34This helps flowers to make seeds.
04:40Most flowers grow into fruits which hold the seeds of the plant and the seeds grow into new plants.
04:55The flowers are generally known as seed boxes of the plant.
05:00Usually, when the flower of a plant dries and falls off, it leaves behind a fruit.
05:12Uses of plants
05:13Apart from fruits, plants also give us shade, help to keep a place cool and bring in more rains.