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Bacteria, blue-green algae or cyanobacteria and mycoplasma are examples of organisms of which kingdom?
Which of the following statements are true? 1. Algae contain chlorophyll. 2. Algae can prepare their own food. 3. Algae do not require water for photosynthesis. 4. Algae needs oxygen as raw material for photosynthesis.
A bacteria gives birth to two new bacteria in each second and the life span of each bacteria is 5 seconds. The process of the reproduction is continuous until the death of the bacteria. initially there is one newly born bacteria at time t = 0, the find the total number of live bacteria just after 10 seconds :
Consider the following statements regarding algae: 1. Algae are chlorophyll-bearing simple, thalloid, autotrophic and largely aquatic organisms. 2. Algae reproduce only by asexual formation of different types of spores Which of the statements given above is/are correct?
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: Sometimes bacteria lend us a helping hand, such as by curdling milk into yogurt or helping with our digestion. B: Bacteria are microscopic, single-celled organisms that thrive in diverse environments. C: These organisms can live in soil, the ocean, and inside the human gut. D: Humans' relationship with bacteria is complex.
Minute cells are found in mycoplasma. Mycoplasma is
Consider the following statements regarding waste stabilization ponds: 1. The pond has a symbiotic process of waste stabilization through algae on one hand and bacteria on the other 2. The oxygen in the pond is provided by algae through photosynthesis 3. The detention period is of the order of two to three days 4. The bacteria which develop in the pond are aerobic Which of the above statements are correct?
It is possible to produce algae-based biofuels, but what is/are the likely limitation(s) of developing countries in promoting this industry? 1. Production of algae-based biofuels is possible in seas only and not on continents. 2. Setting up and engineering the algae-based biofuels production requires high level of expertise/technology until the construction is completed. 3. Economically viable production necessitates the setting up of large scale facilities which may raise ecological and social concerns. Select the correct answer using the code given below:
Which of the following statements about Corals is/are correct? 1. Corals have the highest biodiversity among all the ecosystems. 2. Corals are in symbiotic association with the Zooxanthellae algae. 3. Corals provide a protective environment to the algae while algae provides the food to coral by photosynthesis. 4. The Corals are very sensitive to temperature and increase in temperature leads to coral bleaching. Choose the correct answer from the options given below:
A continuous process is set up for treatment of wastewater. Each day, 103 kg cellulose and 105 kg bacteria enter in the feed stream, while 102 kg cellulose and 1.5 x 102 kg bacteria leave in the effluent. The rate of cellulose digestion by the bacteria is 8 x 102 kg d-1. The rate of bacterial growth is 4x 102 kg d-l; the rate of cell death by lysis is 6 x 102 kg d-1. Write balances for cellulose and bacteria in the system.