-
Engineering and Architecture
Exams
Colleges
Predictors
Resources
-
Computer Application and IT
Quick Links
Colleges
-
Pharmacy
Colleges
Resources
-
Hospitality and Tourism
Colleges
Resources
Diploma Colleges
-
Competition
Other Exams
Resources
-
School
Exams
Top Schools
Products & Resources
-
Study Abroad
Top Countries
Resources
-
Arts, Commerce & Sciences
Colleges
Upcoming Events
Resources
-
Management and Business Administration
Exams
Colleges & Courses
Predictors
-
Learn
Law Preparation
MBA Preparation
Engineering Preparation
Medical Preparation
-
Online Courses and Certifications
Top Streams
Specializations
- Digital Marketing Certification Courses
- Cyber Security Certification Courses
- Artificial Intelligence Certification Courses
- Business Analytics Certification Courses
- Data Science Certification Courses
- Cloud Computing Certification Courses
- Machine Learning Certification Courses
- View All Certification Courses
Resources
-
Medicine and Allied Sciences
Colleges
Predictors
Resources
-
Law
Resources
Colleges
-
Animation and Design
Exams
Predictors & Articles
Colleges
Resources
-
Media, Mass Communication and Journalism
Colleges
Resources
-
Finance & Accounts
Top Courses & Careers
Colleges
Get Answers to all your Questions
- #Biology
- #National Eligilibility Cum Entrance Test
- #Ecology and environment
- #Medical
- #Class 12
- #National Eligibility Cum Entrance Test
The turnover in a lake in spring and autumn results in
Free mixing of and nutrients
Algal bloom
Temperature inversion
Both (1) & (2)
Answers (1)
The turnover in a lake during spring and autumn can indeed result in free mixing of water and nutrients, which can potentially lead to algal blooms.
During the turnover, which is also known as lake mixing or lake overturn, the water in a lake undergoes vertical mixing. In spring, this occurs as the surface waters warm up and become less dense, causing them to mix with the colder, denser water beneath. In autumn, the process is reversed as the surface waters cool down and become denser, leading to mixing with the deeper waters.
During turnover, the mixing of water layers helps distribute oxygen, nutrients, and other dissolved substances throughout the lake. This can result in an influx of nutrients from the deeper waters to the surface, providing a rich nutrient supply for the growth of algae and other aquatic organisms. If the conditions are favorable, such as sufficient sunlight and appropriate nutrient levels, this increased availability of nutrients can lead to algal blooms.
Algal blooms occur when certain types of algae rapidly multiply and dominate the water body, often causing water discoloration and other ecological imbalances. The excessive growth of algae can deplete oxygen levels in the water, disrupt the aquatic ecosystem, and potentially harm other organisms. Therefore, while turnover can be a natural process, the subsequent nutrient availability can contribute to algal blooms, and in some cases, it can have negative ecological impacts on the lake.
Hence, the correct answer is option 4.
NEET 2024 Most scoring concepts
- Just Study 32% of the NEET syllabus and Score up to 100% marks
