Question
Distinguish between the following:
Chromoplast and chloroplast.
Chromoplast and chloroplast.
Chloroplasts | Chromoplasts | ||
1. | They are green plastids. | 1. | They are non-green coloured plastids. |
2. | They contain chlorophylls and carotenoids. | 2. | Chlorophylls are absent. Only carotenoids are present. |
3. | Lamellae are present. | 3. | Lamellae are absent. |
4. | Chloroplasts are sites of photosynthesis. | 4. | They add colour to the organs for attracting animals to perform pollination and fruit dispersal. |
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Write down four characters of Osteichthyes and give two examples.
Column I | Column II | Column III | |||
1. | Oil seeds | a. | Red Sindhi | i. | Sahiwal |
2. | Intercropping | b. | Mustard | ii. | Sunflower |
3. | Local breeds | c. | Vitamin A | iii. | Maize |
4. | Poultry feed | d. | Soybean | iv. | Vitamin K |
What is the difference between plasma membrane and cell wall? Give the functions of each one.
What is neuron? Define it?
Why lead compounds are added to petrol? How is it harmful?