Q. No.Which of the following is true about chloroplast
| 1. | one in chlamydomonas |
| 2. | 20-40 in leaf mesophyll cell |
| 3. | present in different shapes |
| 4. | All of these |
Subtopic: Â Plastids |
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Which of the following organelles contain small amounts of DNA and convert energy?
| 1. | microfi laments and microtubules |
| 2. | lysosomes and peroxisomes |
| 3. | ER and ribosomes |
| 4. | mitochondria and chloroplasts |
Subtopic: Â Plastids |Â Mitochondria |
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Which of the following types of plastid does not contain stored nutrients?
1. Elaioplasts
2. Amyloplasts
3. Chromoplasts
4. Aleuroplasts
1. Elaioplasts
2. Amyloplasts
3. Chromoplasts
4. Aleuroplasts
Subtopic: Â Plastids |
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Which one of the following plastids store proteins?
1. Amyloplasts
2. Elaioplasts
3. Aleuroplasts
4. Protoplasts
1. Amyloplasts
2. Elaioplasts
3. Aleuroplasts
4. Protoplasts
Subtopic: Â Plastids |
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Given below are two statements:
| Assertion (A): | Plastids impart specific colours to the plants. |
| Reason (R): | Plastids bear some specific pigments. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Plastids |
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The type of leucoplast which stores oils and fats is
| 1. | amyloplast | 2. | aleuroplast |
| 3. | elaioplast | 4. | chromoplast |
Subtopic: Â Plastids |
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Based on the type of pigments plastids can be classified into how many classes
1. 3
2. 4
3. 2
4. 1
Subtopic: Â Plastids |
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Consider the given two statements:
| I: | Leucoplasts are colourless plastids. |
| II: | Leucoplasts do not have a known function in plant cells. |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Â Plastids |
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Which one of the following cellular parts is correctly described?
| 1. | Thylakoids-flattened membranous sacs forming the grana of chloroplasts |
| 2. | Centrioles - sites for active RNA synthesis |
| 3. | Ribosomes-those on chloroplasts are larger (80S) while those in the cytoplasm are smaller (70S) |
| 4. | Lysosomes-optimally active at a pH of about 8.5 |
Subtopic: Â Plastids |Â Lysosomes |Â Nucleus |
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Ribosomes occur freely in the cytoplasm or bound to the ER. A researcher isolates ribosomes of 70S type from a eukaryotic cell. These most likely originate from
| 1. | cytoplasm |
| 2. | mitochondria or chloroplasts |
| 3. | lysosomes |
| 4. | nucleolus |
Subtopic: Â Plastids |Â Mitochondria |
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