Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology transport in plants transport of food, water and minerals theories of translocation transport in the phloem of plants

Contact exchange of ions occurs.

  1. Between root and soil particles

  2. Root and coil solution

  3. Cell and external solution

  4. All the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The contact exchange theory posits that ions adsorbed on the surface of soil particles are exchanged directly with ions on the surface of root hairs through contact.

Multiple choice biology transport in plants transport of food, water and minerals theories of translocation transport in the phloem of plants

A characteristic based on concentration of particles in solution is

  1. Colligative property

  2. Surface tension

  3. Colloidal nature

  4. All the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Colligative property of a solution is based on the concentration of solute particles but not on its identity. It includes vapor pressure lowering, boiling point elevation, freezing point depression and osmotic pressure. Non-colligative property of a solution is based on the identity of the dissolved particles and the solvent. It includes viscosity, surface tension and solubility.

Thus, the correct answer is option A.

Multiple choice biology transport in plants transport of food, water and minerals theories of translocation transport in the phloem of plants

On which surface of cell, Donnan equilibrium occurs

  1. Cell wall

  2. Plasma membrane

  3. Transport

  4. Nuclear membrane
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Donnan equilibrium is the equilibrium reached between two ionic solutions separated by a semipermeable membrane when one or more of the kinds of ion cannot pass through the membrane. The result is a difference in osmotic pressure and electrical potential between the solution.
So the correct answer is 'Plasma membrane'.
Multiple choice solid waste management environmental management biology

Solid waste can be classified into

  1. Household waste

  2. Industrial waste

  3. Biomedical waste

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Solid waste can be classified into different types depending on their source:
a) Household waste is generally classified as municipal waste, 
b) Industrial waste as hazardous waste, 
c) Biomedical waste or hospital waste as infectious waste.
Multiple choice solid waste management environmental management biology

Incineration is performed at

  1. High temperature more than 1000$^o$ C

  2. 273K
  3. Temperature lower than 200$^o$ C
  4. 0$^o$ C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Incineration is a waste treatment process that involves the combustion of organic substances contained in waste materials at very high temperatures, typically above 1000 degrees Celsius.

Multiple choice solid waste management environmental management biology

________ is considered as a thermal treatment.

  1. Incineration

  2. Denaturation

  3. Recycling

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Incineration is a waste treatment process that involves the combustion of organic substances contained in waste materials. Incineration and other high-temperature waste treatment systems are described as "thermal treatment". 

Multiple choice solid waste management environmental management biology

Which of the following substances is formed by the action of decomposers?

  1. Fertilizers

  2. Pesticides

  3. Compost

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When garbage such as leftover food, plant and animals waste is collected in heaps, decomposers such as bacteria, insects such as earthworms and fungi act on it and break it down. This product which is formed by this action of decomposers is called compost. This process is called composting and the compost can be used to increase the plant yield. Thus the correct answer is option C.

Multiple choice solid waste management environmental management biology

How much solid waste is produced by USA urban areas per day?

  1. 8 lac tons

  2. 7 lac tons

  3. 9 lac tons

  4. 2 lac tons
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Based on standard environmental science textbooks often used in this curriculum, the estimated daily solid waste production in US urban areas is cited as 7 lac tons.