`PAR` is

A

Photosynthetically adaptable radiation

B

Photosynthetically accessible radiation

C

Photosynthetic activity radiometry

D

Photosynthetically active radiation.

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Acronym PAR**: The term "PAR" stands for "Photosynthetically Active Radiation." This is the primary focus of the question. 2. **Definition of PAR**: Photosynthetically Active Radiation refers to the portion of the light spectrum that is usable by photosynthetic organisms, such as plants, for the process of photosynthesis. 3. **Wavelength Range**: PAR specifically includes wavelengths of light that range from approximately 400 to 700 nanometers. This range corresponds closely to the visible light spectrum. 4. **Importance of Wavelengths**: - Wavelengths below 400 nanometers (ultraviolet light) carry too much energy and can damage the photosynthetic cells. - Wavelengths above 700 nanometers (infrared light) do not carry enough energy to be used in photosynthesis. 5. **Conclusion**: Therefore, the correct answer to the question is that PAR refers to "Photosynthetically Active Radiation," which is crucial for the photosynthesis process in plants and other photosynthetic organisms. **Final Answer**: PAR is "Photosynthetically Active Radiation." ---
Promotional Banner

Topper's Solved these Questions

  • PHOTOSYNTHESIS

    DINESH PUBLICATION ENGLISH|Exercise CYG|10 Videos

  • ORIGIN OF LIFE

    DINESH PUBLICATION ENGLISH|Exercise All Questions|201 Videos

  • PHYLUM - ANNELIDA

    DINESH PUBLICATION ENGLISH|Exercise Check your grasp|10 Videos

Similar Questions

Explore conceptually related problems

What is the percentage of photosynthetically active radiation (PAR), in the incident solar radiation.

Percentage of photosynthetically active radiation (PAR) in the incident solar radiation is

Photosynthetic active radiation (PAR) has the following range of wavelengths

What is the percentage of photosynthetically active radiation (PAR), in the incident solar radiation.

Per centage of photosynthetically active radiation ( PAR) utilized in NPP is :

What is correct about the following satement (a) Portion of spectrum between 500-800 nm is PAR (b) Mg, Ca, Cl have prominent role in photolysis of water In cyclic photophosphorylation, O_(2) and NADPH are not produced

A toy is in the shape of a right circular cylinder with a hemisphere on one end and a cone on the other. The height and radius of the cylindrical par are 13cm and 5cm respectively. The radii of the hemispherical and conical parts re the same as that of the cylindrical part. Calculate the surface area of the toy if height of the conical part is 12 cm.

[A] : Most of the solutes in ECF and cytoplasm are electrolytes, i.e., electrically charged par- ticles or ions. Maintenance of an equilibrium between intracellular fluid and ECF is vitally essential for all cells. [R]: This osmotic equilibrium is maintained by sodium and potassium pump of the cells. It operates with the help of a Na^+, K^+ ATP as enzyme located in the cell membrane.

Consider the following statements. a. NPP is the available blomass for the consumption to herbivores and decomposers. b. Plants capture only 2 - 10 percent of PAR. c. Energy at lower trophic level is always less than at a higher level. d. Earth is an open ecosystem w.r.t. energy. The correct statements are

What is PAR range?