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प्रश्न
Define the following term:
Chloroplast
उत्तर
Chloroplasts are indeed miniature ovoid structures that are encased in a double membrane. Nevertheless, the response could offer a more succinct definition: Chloroplasts are the cellular organelles that are responsible for the process of photosynthesis in plant cells. They are the sites where photosynthesis occurs and contain thylakoids.
संबंधित प्रश्न
Choose the correct answer:
Which one of the following features of plant leaves plays an important part in photosynthesis?
Choose the correct answer:
A cell that lacks chloroplast does not ______________
Name the following:
The part of chloroplast where the dark reaction of photosynthesis takes place.
State one important function of chloroplasts.
(i) Identify the above diagram.
(ii) Label the guidelines 1-3.
(iii) Name the phenomenon which takes place in the above diagram.
(iv) Define the phenomenon.
(v) What is the importance of the above phenomenon?
(i) Draw a neat and well-labelled diagram of the Chloroplast.
(ii) List the events taking place in the photo-chemical phase of Photosynthesis.
(iii) If you are planning an experiment to show the effect of light on photosynthesis :
(a) Will you select white light or green light? Justify your answer.
(b) Why would you select a destarched plant?
A well-watered healthy potted plant with variegated leaves was kept in darkness for about 24 hours. It was then set up as shown in the diagram and exposed to light for about 12 hours. At the end of this time, leaf X and leaf Y were tested for starch. Study the diagram and answer the questions that follow:
(i) Why was the plant initially kept in darkness for 24 hours?
(ii) What is the function of the sodium hydroxide solution in the flask?
(iii) Select the correct leaf from the five available choices shown in the diagram as A, B, C, D, and E. Rewrite the correct answer for the filling in the appropriate letter from the questions that follow:
1. After the starch test, leaf X would look like.
2. After the starch test, leaf Y would look like.
Name the following:
The principal site in a green leaf for photosynthesis.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Too much light destroys chlorophyll.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Out of nine types of chlorophyll, chlorophyll ‘a’ and ‘b’ are most abundant.
