Select the true statements from the following: A. Rivers are lotic (flowing…
2025
Select the true statements from the following:
A. Rivers are lotic (flowing water) aquatic ecosystems.
B. Ponds are lentic (still water) aquatic ecosystems.
C. Streams are lentic (still water) aquatic ecosystems.
D. Deltas are brackish (salty) water aquatic ecosystems.
Choose the correct answer from the options given below:
- A.
Only A and B
- B.
Only C and D
- C.
Only A, B and D
- D.
Only A, B and C
Attempted by 18 students.
Show answer & explanation
Correct answer: C
Aquatic ecosystems are categorized by water movement. Lotic systems have flowing water (rivers, streams), while lentic systems have still water (ponds, lakes).
Statement A is true because rivers involve flowing water, classifying them as lotic ecosystems. Statement B is correct since ponds contain still water, making them lentic ecosystems.
Statement C is false because streams are flowing bodies of water (lotic), not still. Statement D is true as deltas typically form where freshwater meets the sea, creating brackish conditions.
Therefore, statements A, B, and D are the correct options.