Movement in Invertebrates

The video explores the movement of animals, known as locomotion or gait, and the reasons behind it, such as searching for food, protection, and reproduction. It highlights different movement types across species, including creeping, crawling, swimming, and flying. The role of body parts like legs, fins, and wings in movement is discussed, along with the skeletal system's function. The video examines specific invertebrates like earthworms, snails, and cockroaches, detailing their unique movement mechanisms. Earthworms use muscle contractions, snails rely on a muscular foot and mucus, and cockroaches utilize an exoskeleton and coordinated leg movements.

What is the primary reason animals move from one place to another?

• To change their habitat

• To find food and water

• To enjoy the scenery

• To avoid boredom

Which body part is NOT typically involved in animal movement?

• Legs

• Fins

• Wings

• Ears

How do earthworms move without bones?

• By flying

• By rolling

• By hopping

• By stretching and shortening segments

What substance do earthworms secrete to aid their movement?

• Oil

• Slimy mucus

• Water

• Sand

What unique ability does a snail have regarding movement?

• It can swim

• It can fly

• It can move on sharp surfaces without injury

• It can jump high

What is the primary function of a snail's shell?

• To store food

• To help in swimming

• To provide protection

• To aid in movement

How do cockroaches achieve stability and speed while moving?

• By using all six legs at once

• By using three legs at a time

• By jumping

• By flying continuously