Advertisements
Advertisements
Question
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?
Solution
(a) (i) Organism A is a green plant, (ii) food B is glucose and (iii) food H is starch.
(b) C is carbon dioxide and D is water.
(c) (i) The green coloured substance E is chlorophyll and (ii) organ F is a leaf.
(d) The process G is photosynthesis.
APPEARS IN
RELATED QUESTIONS
What are the differences between autotrophic nutrition and heterotrophic nutrition?
Name the following:
A plant that has both autotrophic and heterotrophic mode of nutrition.
Name the organelle of plant cells in which photosynthesis occurs.
How does water from the soil reach the leaves of a plant to be used in photosynthesis?
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
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.
Autotrophic organisms include ____________.
Match Group (A) with Group (B)
| Group A | Group B |
| (a) Autotrophic nutrition | (i) Leech |
| (b) Heterotrophic nutrition | (ii) Paramecium |
| (c) Parasitic nutrition | (iii) Deer |
| (d) Digestion in food vacuoles | (iv) Green plant |
The term that is used for the mode of nutrition in yeast, mushroom and bread-mould is
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.
