1. insects and spiders are invertebrate animals which of the following characteristics does not describe them

A. they need antenae for chemical perception
B. they breath thorough their trachea and lungs
C. they are develope their young inside the female body
D.their bodies have three regions like head, thorax, and abdomen

2. mollusks are invertebrates that occupy an oversized range of water and land community they have bivalves or univalve shells.
A. clam
B. earthworm
C. octopus
D snail

3. the most important groups of arthropods are insects which best describes insect
A. insects bodies are divided into three regions: the pinnacle, the thorax, and the abdomen.
B. insects breathe through a network of tubes called trachea
C. insects are spiny- skinned aquatic animals
D. insects have lungs for breathing

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