A biologist has a small pond containing goldfish in her garden. On a sunny day, more pondweed is at the surface of the water but on a cloudy day, less pondweed is at the surface. Suggest an explanation for this observation

The intensity of light is greater on a sunny day, therefore the rate of photosynthesis in the pondweed is greater during these days. Hence, more oxygen is produced which thereby increases the bouyancy (makes the pondweed float to the surface of the pond) on the lighter days. 

Answered by Jay S. Biology tutor

6881 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Explain the formation of a new species


What is the role of ADH in water regulation


Briefly describe the mechanism of muscle contraction.


How do I answer a 'Describe and Explain' question?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences