Advertisements
Advertisements
प्रश्न
Give biological reasons for the following statements : In some xerophytes leaves are modified into spines
Advertisements
उत्तर
Xerophytes are plants growing in dry climate. It is important for them to conserve water. Leaves modified into spines reduce the surface area and thus reduce the rate of transpiration.
APPEARS IN
संबंधित प्रश्न
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions:
(i) Name the process intended for study.
(ii) Define the above mentioned process.
(iii) When the weight of the test tube (A & B) is taken before and after the experiment, what is observed? Give reasons to justify your observation in A & B.
(iv) What is the purpose of keeping the test tube B in the experimental setup?
Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow :
(ii) Name the tropic movement shown by part 1.
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow :
Explain the process of Photosynthesis.
State the main functions of the following:
Cytokinins
Define the following:
Organic food
Identify the false statement and rewrite it correctly by changing the first or last word only.
Green plants perform photosynthesis.
Give technical term:
In photosynthesis radiant energy is converted into which from?
Complete the following sentence with appropriate word:
AIIP stands for ____________.
1. What happens to the dandelion flower
- During the daytime?
- At night?
2. What is the phenomenon known as?
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 green-colored 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. Does this food give a blue-black color with iodine solution?
a. What is
- organism A
- food B?
- food H?
b. What are C and D?
c. Name green-colored substance E and organ F.
d. What is the process G?
