The orange and red wave lengths of light are able to penetrates in a sea upto a depth of:
Correct answer: D. 20 meters only
- A. 5 meters only
- B. 80-100 meters
- C. 50 meters
- D. 20 meters only
Explanation
Red and orange wavelengths are absorbed rapidly by seawater and generally penetrate only to around 20 metres. Blue and blue-green wavelengths travel much deeper, which is why deep water appears blue.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Forest Ecology
837 free Forest Ecology MCQs from Forestry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Forestry questions like this
Forestry is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Forest Ecology questions
The temperature based zone at an altitude of 10,000 is:
Mark the true xerophyte:
Magnolia and oaks occur in the following zone:
The alpine forests are classed under the plant group called:
When a plant of hot climate is transferred to colder regions, it gets an injury called:
In western Himalayas, the Betula trees usually occur in: