Cilia Beat with Two Distinctive Phases

question 24

Short Answer

Cilia beat with two distinctive phases.With the __________ stroke,they stroke like an oar,thereby propelling the organism through the water.With the __________ stroke,cilia bend along their length while they are pulled forward.
ASM

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Definitions:

External World

The outer physical reality that exists independently of individual perceptions and thoughts.

Internal Forces

Forces that act within an object or system, affecting its structure and performance without external influence.

Punishment

An unpleasant stimulus that suppresses behavior.

Teasing

The act of making fun of or attempting to provoke a person or animal in a playful or unkind way.