Tag: manure
Questions Related to manure
Function of leghaemoglobin (a red pigment) in root nodules of leguminous plants is
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to regulate $O _2$ supply in cells
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to regulate $CO _2$ supply in cells
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to regulate production of phenolic compounds
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to regulate the Mo supply in cells.
Leghemoglobin supports the centralization of free oxygen in the cytoplasm of contaminated plant cells to guarantee the best possible capacity of root knobs. Its capacity is to help give oxygen to the breathing harmonious bacterial cells in root nodules of leguminous plants in a way practically equivalent to hemoglobin transporting oxygen to breathing tissues in creatures.
Which of these crops do not require nitrogen fertilizer?
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Corn
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Soyabean
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Grass
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Oats
Soya bean is a legume. Leguminous plants contain root nodules. Nitrogen fixing bacteria rhizobium is present in the root nodules of leguminous plants which fix the nitrogen naturally. So, it does not require an outer supplement for nitrogen or nitrogen fertilizer.
Leghaemoglobin is formed for
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Respiration
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Photosynthesis
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Nitrogen fixation
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Fatty acid synthesis
Thus, the correct answer is option (C).
Leghaemoglobin (A red colored haemoprotein) having an affinity for oxygen is present in the roots of
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Mustard
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Soyabean
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Carrot
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Radish
Leghaemoglobin is a hemoprotein found in the root nodules of leguminous plants. In plants colonized by Rhizobium, such as alfalfa or soybeans, the presence of oxygen in the root nodules would reduce the activity of the oxygen-sensitive nitrogenase, an enzyme responsible for the fixation of atmospheric nitrogen.
Which of the following can replenish nutrients in the soil?
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Fertilizer
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Manure
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Compost
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All of the above
There are different methods by which nutrients in the soil can be replenished. Fertilizers and manures contain plant nutrients such as nitrogen, phosphorus, potassium. Fertilizer can be added to the soil. It helps in replenishing exhausted soils with rich sources of organic nutrients. Manure is environment friendly and replenishes the soil with organic nutrients. Compost is decomposed organic material. It reintroduces living organisms and nutrients in the soil. It improves soil structure and provides a healthy environment for plant roots.
Which of the following is/are used as blofertillsers?
1. Azolla
2. Blue-green algae
3. Alfalfa
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1 and 3
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1 and 2
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2 alone
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1, 2 and 3
Azolla and BGA are used as biofertilizers in the rice field because they increase the yield of the paddy or rice by supplying the plant with all the nutritional elements
Organisms which can bring about soil nutrient enrichment are known
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sympathetic bacteria
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Biofertilizers
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Soil bacteria
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Proxy fertilizers
Through the use of biofertilizers, healthy plants can be grown, while enhancing the sustainability and the health of the soil. ... Biofertilizers such as Rhizobium, Azotobacter, Azospirilium and blue green algae (BGA) have been in use a long time. Rhizobium inoculant is used for leguminous crops. So, the correct option is "B" (Biofertilizers).
Favourable condition for nitrogenase activity in heterocyst of BGA is due to
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Loss of PS-II
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Loss of PS-I
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Presence of thick wall
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More than one option is correct
Heterocysts are specialized nitrogen-fixing cells formed during nitrogen starvation by some blue-green algae. They fix nitrogen from di-nitrogen in the air using the enzyme nitrogenase and nitrogenase is inactivated by oxygen, so the heterocyst must create a micro-anaerobic environment and that's why heterocysts degrade photo-system II, which produces oxygen.
Leghaemoglobin is required in the process of
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Nitrification
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Reductive amination
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Ammonification
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Diazotrophy
In root nodules of legumes, leghaemoglobin is important because it:-
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Acts as a catalyst in transamination
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Transports oxygen to the root nodule
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Provide energy to the nitrogen fixing bacteria
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Acts as an oxygen scavenger
- Leghaemoglobin (also leghemoglobin or legoglobin) is an oxygen carrier and hemoprotein found in the nitrogen-fixing root nodules of leguminous plants.
- Leghaemoglobin buffers the concentration of free oxygen in the cytoplasm of infected plant cells to ensure the proper function of root nodules.
So, the correct answer is "transports oxygen to the root nodule".