Advertisements
Advertisements
प्रश्न
Distinguish between: Autotrophic nutrition and Heterotrophic nutrition.
Advertisements
उत्तर
| Autotrophic nutrition | Heterotrophic nutrition |
| 1. It is the mode of nutrition in which organisms produce their own organic food. | It is the mode of nutrition in which organisms depend on other organisms for their food. |
| 2. Organisms producing their own food are known as autotrophs. | Organisms depending on others for food are known as heterotrophs. |
| 3. Autotrophs use simple inorganic substances present in the surroundings to produce food. | Heterotrophs depend on other organisms to get their food. |
| E.g. Plants | E.g. Fungi |
APPEARS IN
संबंधित प्रश्न
In addition to carbon dioxide and water, state two other conditions necessary for the process of photosynthesis to take place.
Which substance is used to remove chlorophyll from a green leaf during photosynthesis experiments?
- Name the pigment in leaves which absorbs sunlight energy.
- What is the colour of this pigment?
Name the organelle of plant cells in which photosynthesis occurs.
State the various steps involved in the process of photosynthesis.
How does water from the soil reach the leaves of a plant to be used in photosynthesis?
The cells which surround a stomatal pore.
What will happen to the rate of photosynthesis on a plant under the following circumstances?
(i) cloudy day in morning but bright sunshine in the afternoon
(ii) no rainfall in the area for a considerable time.
(iii) gathering of dust on the leaves
Write a chemical equation to show the process of photosynthesis in plants.
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?
Do all cells use oxygen to produce energy?
Which of the following is the only conducting tissue in non-flowering plants?
(a) xylem vessels
(b) sieve tubes
(c) companion cells
(d) tracheids
Explain the process of production of food in plants.
Which of the following equations is the summary of photosynthesis?
Autotrophic organisms include ____________.
The Figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are air tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from each of the two plants X and Y.
Which of the following steps can be followed for making the apparatus air tight?
- placing the plants on glass plate
- using a suction pump.
- applying aseline to seal the bottom of jar.
- creating vacuum
Which of the following is most appropriate for aerobic respiration?
Two green plants are kept separately in oxygen free containers, one in the dark and other in sunlight. It was observed that plant kept in dark could not survive longer. Give reason for this observation.
What are the by-products of autotrophic nutrition?
