EVERYDAY SCIENCE

SCIENCE

ZOOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Define Sessile
A
being able to move from place to place
B
NOT being able to move from place to place, but has moving parts
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Biologically speaking, an organism that is sessile (as opposed to motile) lacks the ability of self-locomotion and is predominantly immobile. In zoology, sessility applies to those animals which are attached to a substrate.

Detailed explanation-2: -: permanently attached or established : not free to move about. sessile sponges and coral polyps.

Detailed explanation-3: -Sessile organisms can move via external forces (such as water currents), but are usually permanently attached to something. Organisms such as corals lay down their own substrate from which they grow.

Detailed explanation-4: -Sessile refers to the ability of a life form to be attached to a particular surface throughout its life, being predominantly immobile while motile refers to the ability of a life form to move independently, using metabolic energy.

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