Q. Which of the following statements regarding mangroves is/are correct?

1. They can survive in saline waters.
2. They need high oxygen levels for respiration.
3. They are viviparous, meaning their seeds germinate while still attached to the parent tree.

Select the correct option from the codes given below:
Answer: Only 1 & 3
Notes: Mangroves can survive in saline waters (statement 1 is correct) and exhibit vivipary, with seeds germinating while still attached to the parent tree (statement 3 is correct). However, they do not require high oxygen levels for respiration; instead, they are adapted to low-oxygen conditions by developing specialized roots called pneumatophores. Hence, statements 1 and 3 are correct.