NEET BIOLOGY

ECOLOGY

ORGANISMS AND THE ENVIRONMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If all of the water dries up in a pond, the fish will-
A
move into a new pond.
B
swim faster.
C
thrive.
D
perish.
Explanation: 

Detailed explanation-1: -Most will die. A few, like walking Catfish, are capable of migrating in search of water. And a few, like lungfish, are capable of estivation (burying themselves in the mud and sleeping until the rains come back).

Detailed explanation-2: -What happens if your pond dries out completely? Even in a garden pond drying out is unlikely to be a complete disaster: 1. There’s a good chance that almost everything that can fly will leave the pond and come back later: so that’s almost all adult water beetles and water bugs (like pond skaters and backswimmers).

Detailed explanation-3: -During long periods of drought, the shallow water table falls below the normal elevation of the pond, increasing the seepage rate and leaving the pond bottom dry.

Detailed explanation-4: -Fish can live out of water for between ten minutes and two months, depending on the species. Typically, amphibious and brackish water fish can survive far longer out of the water than freshwater fish species. Neon tetras and guppies can’t survive for more than ten minutes when out of their tanks.

Detailed explanation-5: -Plants would wilt and their cells would die in a process called plasmolysis. Primary consumers (herbivores) would suffer twofold as their prey (the plants) die and their water source disappeared.

There is 1 question to complete.