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A fresh water green alga, rich in protein is
The Reaction between Glucose→ 6- Phasphogluconate in 3P calalysed by
Which of the following bacterium is photosynthetic free living aerobic nitrogen fixer ?
The atmospheric nitrogen is not available to plants. There are some nitrogen fixing bacteria which converts atmospheric nitrogen into ammonia which is readily available to plants. Anabaena is a free-living as well as symbiotic nitrogen fixing bacteria. Clostridium is a free-living, anaerobic nitrogen fixing bacteria. Azotobacter are free-living, aerobic, and non-photosynthetic nitrogen fixing bacteria. Rhizobium is non free living symbiotic nitrogen fixing bacteria.
Thus, the correct answer is 'Azotobacter.'
“Little leaf disease” in plant and "Khaira disease" in Rice caused due to deficiency of a
A mantle is
The mantle cavity functions as a respiratory chamber in most molluscs. In bivalves it is usually part of the feeding structure. In some molluscs the mantle cavity is a brood chamber, and in cephalopods and some bivalves such as scallops, it is a locomotory organ.
Hence, the correct answer is option C.