The process of photosynthesis produces oxygen, which is released by the plant into the air. Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light . That particular light wavelength is reflected from the plant, so it appears green.
Why are leaves green in Class 7?
Solution: Green plants are green because they contain a pigment called chlorophyll . Chlorophyll is found in the chloroplasts of plants.
Why do leaves look green Class 7?
Leaves are known as the kitchen or food factories of the plants because photosynthesis takes place in leaves. Leaves look green because of the presence of chlorophyll . The photosynthesis helps to maintain a balance between oxygen and carbon dioxide in the atmosphere as it absorbs carbon dioxide and release oxygen.
Why do leaves look green short answer?
This food-making process takes place in the leaf in numerous cells containing chlorophyll , which gives the leaf its green color. This extraordinary chemical absorbs from sunlight the energy that is used in transforming carbon dioxide and water to carbohydrates, such as sugars and starch.
Do Coloured leaves have chlorophyll Class 7?
Leaves have a green pigment called chlorophyll. This gives them green colour.So,they can trap sunlight and make food....!!
Why are plant leaves green in Class 9?
Leaves are green due to the presence of a green coloured pigment, called chlorophyll . The main function of the chlorophyll is. (a) To absorb carbon dioxide from the atmosphere.
What does symbiosis Class 7 mean?
Symbiosis is derived from the Greek words ‘Sym' means ‘with' and ‘biosis' means ‘living', which means living together . If two different types of organisms live and work together for their mutual benefit, their relationship is called symbiosis.
Why is leaf shape important?
Being able to vary the shape of your leaves is important, as it allows you to expand your range into new areas or cope with changing environments . ... Along this transect, leaf area increased by more than 10 times and the specific leaf area of plants more than doubled.
What is the true color of a leaf?
Yellow , a pigment in the carotenoid family, is a leaf's natural color, and therefore it is always present. Chlorophyll gives leaves their green color, and masks the yellow. Chlorophyll is present as leaves manufacture food during photosynthesis.
What is called Shoot system?
Shoot system is an aerial and erect part of plant body which grows upwards . It is usually above the soil and develops from plumule of the embryo. It consists of stem, branches, leaves, flowers, fruits and seeds.
What is the main function of the leaf?
Leaf function
The main function of a leaf is to produce food for the plant by photosynthesis . Chlorophyll, the substance that gives plants their characteristic green colour, absorbs light energy. The internal structure of the leaf is protected by the leaf epidermis, which is continuous with the stem epidermis.
Are all leaves green in colour?
All leaves are not green in colour . Some may be red, orange etc. The colour of leaves depends on the type of pigment present in more quantity in them. For example, if chlorophyll is more, colour of leaf is green and if carotene pigment is more, colour of leaf is orange to red.
What is the function of stomata Class 7?
Functions of the stomata
They allow the exchange of gases (CO 2 and O 2 ) with the atmosphere . Evaporation of water from the leaf surface occurs through the stomata. Thus, the stomata help in the process of transpiration. Based on the climatic conditions, it closes or opens its pores to maintain the moisture balance.
What is chlorophyll Class 7 short answer?
Chlorophyll is the green pigment present in leaves that absorbs sunlight,gives green colour to leaves and helps in photosynthesis...!! Its a green pigment in the leaves and helps it make its own food etc. It is a green pigment which is presented in the leaves from which leaves appear green...
What is the role of leaves in photosynthesis for Class 7?
Class 7 Question
Leaves are designed and adapted to allow photosynthesis to take place. They are flat and broad to capture as much of the light energy from the sun as possible . They also contain lots of tiny holes called stomata which allow for the absorption of carbon dioxide and the release of oxygen.
