Ent 101 - Module 2 Glossary Terms Questions
with Verified Correct Answers
STERNUM
On an insect, the ventral plate of a body segment
TERGUM
On an insect, the dorsal plate of a body segment
NOTUM
On an insect, the dorsal plate of a body segment, specifically on the thorax
PLEURON
On an insect, the lateral plate of a body segment which runs along the side of the insect. Leg
bases attach to these plates.
ANTENNA pl. antennae
Long and thin paired sensory appendages on the head of an arthropod, made up of many
segments.
COMPOUND EYES
A type of eye found in many arthropods, such as insects and crustaceans, that is composed of
multiple independent visual units.
OMMATIDIUM pl. OMMATIDIA
An independant visual unit of the compound eye.
OCELLUS pl. OCELLI
, Simple eyes found in insects, often in an arrangement of 3 on the vertex of the head.
Composed of a single lens which contains multiple sensory cells.
LABRUM
Mouthpart in insects that lies above the preoral cavity, like an insect's "upper lip".
MANDIBLES
Paired jaw-like structures in insects found immediately beneath the labrum, often used to tear
and crush food in biting-chewing insects. Modified into stylets in hemipteran insects.
MAXILLAE
Mouthpart in insects that forms the floor of the preoral cavity, like an insects "lower lip".
Modified in the Odonata into a prey-capture mechanism.
PALP
Paired sensory appendages attached to the mouthparts used for tasting and manipulating food.
Palps are present on the maxillae and the labium.
BITING-CHEWING MOUTHPARTS
The basic type of mouthparts which are ancestral in insects. Mandibles are often the largest of
the mouthparts and are used for chewing food.
PIERCING-SUCKING MOUTHPARTS
Modified mouthparts that are used to pierce plant or animal tissue and suck out the fluids
within.
SIPHONING MOUTHPARTS
with Verified Correct Answers
STERNUM
On an insect, the ventral plate of a body segment
TERGUM
On an insect, the dorsal plate of a body segment
NOTUM
On an insect, the dorsal plate of a body segment, specifically on the thorax
PLEURON
On an insect, the lateral plate of a body segment which runs along the side of the insect. Leg
bases attach to these plates.
ANTENNA pl. antennae
Long and thin paired sensory appendages on the head of an arthropod, made up of many
segments.
COMPOUND EYES
A type of eye found in many arthropods, such as insects and crustaceans, that is composed of
multiple independent visual units.
OMMATIDIUM pl. OMMATIDIA
An independant visual unit of the compound eye.
OCELLUS pl. OCELLI
, Simple eyes found in insects, often in an arrangement of 3 on the vertex of the head.
Composed of a single lens which contains multiple sensory cells.
LABRUM
Mouthpart in insects that lies above the preoral cavity, like an insect's "upper lip".
MANDIBLES
Paired jaw-like structures in insects found immediately beneath the labrum, often used to tear
and crush food in biting-chewing insects. Modified into stylets in hemipteran insects.
MAXILLAE
Mouthpart in insects that forms the floor of the preoral cavity, like an insects "lower lip".
Modified in the Odonata into a prey-capture mechanism.
PALP
Paired sensory appendages attached to the mouthparts used for tasting and manipulating food.
Palps are present on the maxillae and the labium.
BITING-CHEWING MOUTHPARTS
The basic type of mouthparts which are ancestral in insects. Mandibles are often the largest of
the mouthparts and are used for chewing food.
PIERCING-SUCKING MOUTHPARTS
Modified mouthparts that are used to pierce plant or animal tissue and suck out the fluids
within.
SIPHONING MOUTHPARTS
