Question:
During biological treatment of sewage, the masses of bacteria held together by fungal filaments to form mesh-like structures are called:
During biological treatment of sewage, the masses of bacteria held together by fungal filaments to form mesh-like structures are called:
Show Hint
Flocs are key in aerobic biological processes for treating wastewater.
Updated On: Jan 13, 2026
- Primary sludge
- Flocs
- Activated sludge
- Anaerobic sludge
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
During sewage treatment, bacteria and fungal filaments aggregate to form flocs.
Flocs help in the breakdown of organic matter and are an essential part of biological treatment.
Was this answer helpful?
0
0
Top CBSE CLASS XII Biology Questions
- All algae have
- With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.
- With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte
- Draw a labeled diagram of male reproductive system.
- Draw a labeled diagram of female reproductive system.
View More Questions
Top CBSE CLASS XII Structure and Development of Seed and Fruit Questions
- Anthropogenic action can enhance the rate of evolution. Explain with the help of an example.
- Why did Hershey and Chase use \(^{35}\text{S}\) and \(^{32}\text{P}\) in their experiment? Explain.
- A DNA fragment has 3000 nucleotides, out of which 160 are Guanine. How many bases having double hydrogen bonds between them does this DNA fragment possess?
- Identify the category of genetic disorder depicted in the pedigree chart given below:
Identify the correct labellings in the figure of a fertilised embryo sac of an angiosperm given below:
View More Questions
Top CBSE CLASS XII Questions
- 2, b, c are in A.P. and the range of determinant $\begin{vmatrix}1&1&1\\ 2&b&c\\ 4&b^{2}&c^{2}\end{vmatrix}$ is [2, 16]. Then find range of c is
- A boy of mass 50 kg is standing at one end of a, boat of length 9 m and mass 400 kg. He runs to the other, end. The distance through which the centre of mass of the boat boy system moves is
- A capillary tube of radius r is dipped inside a large vessel of water. The mass of water raised above water level is M. If the radius of capillary is doubled, the mass of water inside capillary will be
- A circular disc is rotating about its own axis. An external opposing torque 0.02 Nm is applied on the disc by which it comes rest in 5 seconds. The initial angular momentum of disc is
- A circular disc is rotating about its own axis at uniform angular velocity \(\omega.\) The disc is subjected to uniform angular retardation by which its angular velocity is decreased to \(\frac {\omega}{2}\) during 120 rotations. The number of rotations further made by it before coming to rest is
View More Questions