Grasshopper Practical

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Terms in this set (...)

Antenna
sensor/ tacticle function
Labrum
upper lip
Mandible
chewing mouth part
Maxilla
jaws- chew/ taste food
labium
holds food
forewing
brown, leathery, large, protects hindwing
Hindwing
thin, papery, different color (red), same flight, stabalize while jumping
walking legs
direct jumps, move short distances
jumping legs
3rd period legs
have a tapered abdomen that end in a pointed egg laying tube called the ovisposter. Males have a more rounded abdomenthat turns upward.
how to determine the sex of a grasshopper...
*antennas (odor, touch, humidity, vibration, velocity, direction)
*head
*ocelli ( light intensity0
which region of an insects body is specialized for sensory functions/
wings and jumping legs attached to thorax
which region of the insect's body is specialized for movement?
Simple eyes
used for detecting light and maintaining flight stability
compound eyes
are used for color and motion, seeing
*mandible( helps chew food)
*Labium (helps chew/hold food)
* Maxillary palps (sense food characterizations)
* Labial palps ( contain sense organs that help choose what food to eat)
* Maxillae ( chew/ taste food)
what are grasshoppers mouthparts and their functions?
have little claws at the end of their feet/legs
How are the ends of the legs adapted for holding onto plants?
they are a lot bigger, more muscular with spring like tendons.
How is the third pair of legs adapted for jumping?
large trachael tubes that are a part of the respiratory system
what system do spiracles open into on a grasshopper?
All segments in abdomen except last 2. None on thoraic segments.
do all abdominal segments have spiracles? are there any spiracles on the thoraic segment?
if the grasshopper has a split tail it is a female. If not it is a male.
How do you determine the sex of a grasshopper?
use the ovisposter to deposit eggs in a hole dug by 3 specialized horns that extend from the abdomen
How do grasshoppers dig holes to lay their eggs?
Spiracles
external opening for air entry
enter small lateral openings
Where are the spiracles located?
thorax
Where are the legs located?
1 pair
How many antennae?
2 pairs.
How many pairs of wings?
abdomen
On what section is the tympanic membrane?
hearing
what is the function of the tympanic membrane?
labrum
Upper lip...
palp
lower lip
head
body sections with no appendages.
3 (6 total)
How many pairs of legs?
trachea
Gas exchange...
Sensory hairs
cover antennae and exoskeleton and are sensitive to movement and touch.
Tracheal tubes
air from spiracles enters these tubes and circulates through the body.
open
Circulation?
mimicry
similarity in appearance
complete metamorphosis
4 stages, controlled by internal chemicals
egg
beginning of life
larva
(catepillar) free living wormlike stage.
pupa
(cocoon) period of reorganization where tissues and organs are reorganized.
adult
emerges from the pupa: sexually mature
incomplete metamorphosis
the immature stage looks like the adult stage of the insect, 3 stages
egg
surrounded by protective shell that contains nutritious food for the offspring.
Nymph
hatches from the egg
adult
occurs after the nymph molts several times