Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

Multiple choice botany ecosystem energy flow in food chain food chain and energy flow energy flow in ecosystem

Phenomenon, by which some primarily bacteria utilize chemicals to generate energy rich compounds, known as

  1. Autosynthesis

  2. Polysynthesis

  3. Photosynthesis

  4. Chemosynthesis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chemosynthesis is the process by which certain organisms (like bacteria) obtain energy by oxidizing inorganic chemical compounds rather than using sunlight.

Multiple choice botany ecosystem : structure and function energy flow in food chain food chain and energy flow energy flow in ecosystem

Organism in estuary can concentrate on conversion of sun energy into;

  1. Food

  2. Organic matters

  3. Nutrients

  4. Water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Organisms in an estuary, particularly producers like phytoplankton and algae, convert solar energy into organic matter through photosynthesis. This organic matter forms the base of the estuarine food web.

Multiple choice botany ecosystem : structure and function energy flow in food chain food chain and energy flow energy flow in ecosystem

According to first law, energy cannot be created nor destroyed, but, can only show a state known as

  1. Utilized

  2. Thermodynamics

  3. Convection

  4. Conversion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The first law of thermodynamics states that energy is conserved; it can be converted from one form to another but cannot be created or destroyed. The process of changing energy from one form to another is called conversion.

Multiple choice botany ecosystem energy flow in food chain food chain and energy flow energy flow in ecosystem

Which among the following missions of Government of India follow Perform, Achieve and trade mechanism?

  1. National Solar Mission

  2. National Mission on Enhanced Energy Efficiency

  3. National Mission on Sustainable Habitat

  4. National Water Mission
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Perform, Achieve and Trade (PAT) scheme is a market-based mechanism under the National Mission on Enhanced Energy Efficiency (NMEEE) designed to enhance energy efficiency in energy-intensive industries.

Multiple choice botany ecosystem energy flow in food chain food chain and energy flow energy flow in ecosystem

Which bacteria consumes organic matter as their food, and thus oxidizing it to stable end product?

  1. Viruses

  2. Aerobic Bacteria

  3. Anaerobic Bacteria

  4. Rotifers
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Aerobic bacteria require oxygen to break down organic matter into stable end products like carbon dioxide and water. Anaerobic bacteria function in the absence of oxygen, and viruses are not organisms that consume organic matter in this way.

Multiple choice botany ecosystem energy flow in food chain food chain and energy flow energy flow in ecosystem

What is the PAR range?

  1. 200nm - 800nm

  2. 400nm - 700nm

  3. 350nm - 550nm

  4. 600nm - 100nm
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Photosynthetically active radiation or PAR is, the spectral range (wave band) of solar radiation from 400 to 700 nanometers. At this range, an autotroph synthesises the food by the process of photosynthesis. Hence option B is correct.

Multiple choice botany ecosystem energy flow in food chain food chain and energy flow energy flow in ecosystem

 The wavelength of light most absorbed during photosynthesis is

  1. 400 nm

  2. 55 mm

  3. 660 nm

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

Photosynthesis occurs in small portion of spectrum, called as 'photosynthetically active radiation' or PAR (400-700 nm). Maximum absorption of light occurs in blue region (around 400 nm) followed by red light (around 700 nm). Maximum photosynthesis, however, occurs in red light. Least photosynthesis occurs in green light.