Advertisements
Advertisements
प्रश्न
Why is plant food not produced in any other parts of the plant except the green ones?
Advertisements
उत्तर
Plant food is produced by a special process known as photosynthesis. The process of photosynthesis requires specialised structures called chloroplasts and these structures are found only in green regions of plants. The green colour of specific parts of plants is due to the presence of chlorophyll pigment present in these chloroplasts. Structures in plants which do not contain chloroplast, do not appear green in colour and are not capable of producing food.
संबंधित प्रश्न
Name a gas used in photosynthesis.
Name the organelle of plant cells in which photosynthesis occurs.
Organisms that can prepare their own food.
The cell organelle where photosynthesis occurs.
When carrying out the starch test on a leaf, why is it important to boil the leaf in alcohol?
(a) to dissolve the waxy cuticle
(b) to make the cells more permeable to iodine solution
(c) to remove the chlorophyll
(d) to stop chemical reactions in the cells.
An organism A which cannot move from one place to another, makes a simple food B from the substances C and D available in the environment. This food is made in the presence of a green coloured substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. The food H gives a blue-black colour with dilute iodine solution.
(a) What is (i) organism A (ii) food B, and (iii) food H?
(b) What are C and D?
(c) Name (i) green coloured substance E, and (ii) organ F.
(d) What is the process G?
List the three events that occur during the process of photosynthesis. Explain the role of stomata in this process.
Distinguish between: Autotrophic nutrition and Heterotrophic nutrition.
The internal (cellular) energy reserve in autotrophs is
Name the following:
A plant that is partially autotrophic.
