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प्रश्न
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Land plants obtain their CO2 from the atmosphere.
पर्याय
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Give biological reasons for the following statements : In some xerophytes leaves are modified into spines
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?
A potted plant was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours. One of the leaves was covered with black paper in the centre. The potted plant was then placed in sunlight for a few hours.
(i) What aspect of photosynthesis was being tested?
(ii) Why was the plant placed in the dark before beginning the experiment?
(iii) During the starch test, why was the leaf
(1) boiled in water
(2) boiled in methylated spirit
(iv) Write a balanced chemical equation to represent the process of photosynthesis.
(v) Draw a neat diagram of a chloroplast and label its parts.
Define the following:
Plant pigments
Name the following:
Three organisms that cannot prepare their own food by photosynthesis.
The following statement is about photosynthesis in a green plant. Write whether it is True or False.
Land plants obtain their carbon dioxide from the atmosphere.
Fill in the blank:
CO2 enters the leaf through ______.
Choose the correct answer:
Which one of the following is the best reason for leaving a plant in a dark place before carrying out experiments on photosynthesis?
Mention one difference between the following on the basis of what is given in bracket.
Respiration and photosynthesis (gas released)
Mention one difference between the following on the basis of what is given in bracket.
Grass and grasshopper (mode of nutrition)
Are the following statement true or false? Give reason in support of your answer.
The starting point of carbon cycle is the release of carbon dioxide by animals during respiration.
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
What aspect of photosynthesis was being investigated?
How is the rate of photosynthesis affected when a green plant gets the green light?
Complete the following sentence with appropriate word:
A plant that does not perform photosynthesis is _______.
Write the functional activity of the following structure:
Thylakoids
Choose the correct option.
The sequential order in electron transport from PSII to PSI of photosynthesis is ______.
Autotrophs use _____,______ and chlorophyll to prepare their own food.
The chemical reaction occurs during photosynthesis is ______.
The swollen basal part of the ______ pistil is the which bears the ______.
When iodine solution is added for testing starch, part of the leaf with ______ turns a blue-black color.
