NEET Test Series from KOTA - 10 Papers In MS WORD
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Photosynthesis in higher plants
238139
Chloroplast dimorphism is a characteristic feature of
1 plants with Calvin cycle
2 $\mathrm{C}_{4}-$ plants
3 all plants
4 only in algae
Explanation:
B Chloroplast dimorphism is a characteristic feature of $\mathrm{C}_{4}$ plants. Dimorphic chloroplasts are the chloroplasts which are concentrated into two types of cells having different size and structure. The dimorphic chloroplast is present in $\mathrm{C}_{4}$ plants because of the presence of special leaf anatomy called kranz anatomy. It is a characteristic feature of $\mathrm{C}_{4}$ plants, e.g. sugarcane, Amaranthus and maize etc.
WB JEE-2010
Photosynthesis in higher plants
238141
The loss of water in $\mathrm{C}_{4}$ - plants compared to $\mathrm{C}_{3^{-}}$ plants for the same amount of $\mathrm{CO}_{2}$ fixed is
1 half
2 one-third
3 one-fourth
4 double
Explanation:
A $\mathrm{C}_{4}$ plants are twice as efficient as $\mathrm{C}_{3}$ plants in terms of fixing carbon (making sugar). However, a $\mathrm{C}_{4}$ plants loses only half as much water as a $\mathrm{C}_{3}$ plants for the same amount of $\mathrm{CO}_{2}$ fixed. $\mathrm{C}_{4}$ plant like maize and sorghum loses half as much water as a $\mathrm{C}_{3}$ plant for the same amount of $\left(\mathrm{CO}_{2}\right)$ fixed. The $\mathrm{C}_{4}$ plants have adapted themselves to continue with the process of photosynthesis even with the stomata closed.
238139
Chloroplast dimorphism is a characteristic feature of
1 plants with Calvin cycle
2 $\mathrm{C}_{4}-$ plants
3 all plants
4 only in algae
Explanation:
B Chloroplast dimorphism is a characteristic feature of $\mathrm{C}_{4}$ plants. Dimorphic chloroplasts are the chloroplasts which are concentrated into two types of cells having different size and structure. The dimorphic chloroplast is present in $\mathrm{C}_{4}$ plants because of the presence of special leaf anatomy called kranz anatomy. It is a characteristic feature of $\mathrm{C}_{4}$ plants, e.g. sugarcane, Amaranthus and maize etc.
WB JEE-2010
Photosynthesis in higher plants
238141
The loss of water in $\mathrm{C}_{4}$ - plants compared to $\mathrm{C}_{3^{-}}$ plants for the same amount of $\mathrm{CO}_{2}$ fixed is
1 half
2 one-third
3 one-fourth
4 double
Explanation:
A $\mathrm{C}_{4}$ plants are twice as efficient as $\mathrm{C}_{3}$ plants in terms of fixing carbon (making sugar). However, a $\mathrm{C}_{4}$ plants loses only half as much water as a $\mathrm{C}_{3}$ plants for the same amount of $\mathrm{CO}_{2}$ fixed. $\mathrm{C}_{4}$ plant like maize and sorghum loses half as much water as a $\mathrm{C}_{3}$ plant for the same amount of $\left(\mathrm{CO}_{2}\right)$ fixed. The $\mathrm{C}_{4}$ plants have adapted themselves to continue with the process of photosynthesis even with the stomata closed.