Ok. They say bright yellow too has been spotted in tropics (what's not in tropics?) (FYI: tropics is between tropic of cancer and tropic of capricorn... amazon, etc. you know?)
1/4 inch to 3 inch. 3 inch is half that 15 cm scale you all take to school in the box.
It's got that extension of upper body wall which makes it look like the pandy lorry.
They eat anything and everything. That's what makes them pests, able to survive anywhere (some people don't go out of their home state because they don't eat all food). And of course they're omnivores. Don't mind whether it's veg or non-veg that they eat.
And not just that. They transport E.coli, staphylococcus, salmonella, etc. causing diseases.
Look :
Like the upper body wall that extends over head, the wings extend on the behind, beyond the abdomen.
Like all insects (like ant), there're three main sections. Head, thorax, abdomen.
sclerites (sclero-hard. (remember sclerenchyma?) plates of exoskeleton)
dorsal tergites and ventral sternites (sternum(breastbone) is ventral).
these are joined together by arthrodial membrane (arthro - joint, rheumatoid arthritis at knee joint) (or articular membrane... articulation is also joint)
Cockroach is humble, has its head bowed at right angles to the body.
Antennae + eyes = martial sense of surrounding.
labrum and labia both mean lip. But labia stands for 2 lips (labia majora and labia minora are 2 pairs of folds that're perfect for lips). labium the lower lips is made of 2 sides, 2 appendages, etc. see the figure. Those things couldn't be fitted on to the upper lip, because then it'd obstruct the mouth. labrum the upper lip is single.
Now here's the not so easy part. Mandible and maxilla both mean jaw. Mandible is that which allows chewing, grinding, etc. (In human beings the mandible is the lower jaw. And maxilla the upper jaw.) But Periplaneta has got no hands to take food near the mouth. So, one jaw (preferably the lower jaw) took appendages that take food to mouth. The other (upper) has grinding, and incising regions. So, upper is mandible, lower is maxilla. ( these are paired for Periplaneta, because it's gotta be around the labrum and labium.)
hypopharynx is tongue. it's upside down. pharynx is above. hypopharynx, under pharynx.
Head ---- neck-pro ---- meso -----meta
pro means earlier, anterior, etc (prokaryote)
meso means middle (mesoderm, mesosphere)
meta means beyond, later, after development (metamorphosis)
Each of these got a pair of legs each. (Like ants. Head and abdomen would look eerie had they had legs)
The pro thorax's already gotta bear the neck. So it doesn't have wing.
Forewings, are at mesothorax.
(LOL. As I type that I spot an old, grown cockroach on the floor. Let us call him (oh, wait is it he? lemme see...Oh, it's got style. It's a male. Oops. seems like it didn't like the photo flash. Crept out of my hand. Let's let it go its own way. Lesson learned. No flash photography with nocturnal vision animals. (extreme sensitivity))
1/4 inch to 3 inch. 3 inch is half that 15 cm scale you all take to school in the box.
It's got that extension of upper body wall which makes it look like the pandy lorry.
They eat anything and everything. That's what makes them pests, able to survive anywhere (some people don't go out of their home state because they don't eat all food). And of course they're omnivores. Don't mind whether it's veg or non-veg that they eat.
And not just that. They transport E.coli, staphylococcus, salmonella, etc. causing diseases.
Look :
Like the upper body wall that extends over head, the wings extend on the behind, beyond the abdomen.
Like all insects (like ant), there're three main sections. Head, thorax, abdomen.
sclerites (sclero-hard. (remember sclerenchyma?) plates of exoskeleton)
dorsal tergites and ventral sternites (sternum(breastbone) is ventral).
these are joined together by arthrodial membrane (arthro - joint, rheumatoid arthritis at knee joint) (or articular membrane... articulation is also joint)
Cockroach is humble, has its head bowed at right angles to the body.
Antennae + eyes = martial sense of surrounding.
labrum and labia both mean lip. But labia stands for 2 lips (labia majora and labia minora are 2 pairs of folds that're perfect for lips). labium the lower lips is made of 2 sides, 2 appendages, etc. see the figure. Those things couldn't be fitted on to the upper lip, because then it'd obstruct the mouth. labrum the upper lip is single.
Now here's the not so easy part. Mandible and maxilla both mean jaw. Mandible is that which allows chewing, grinding, etc. (In human beings the mandible is the lower jaw. And maxilla the upper jaw.) But Periplaneta has got no hands to take food near the mouth. So, one jaw (preferably the lower jaw) took appendages that take food to mouth. The other (upper) has grinding, and incising regions. So, upper is mandible, lower is maxilla. ( these are paired for Periplaneta, because it's gotta be around the labrum and labium.)
hypopharynx is tongue. it's upside down. pharynx is above. hypopharynx, under pharynx.
Head ---- neck-pro ---- meso -----meta
pro means earlier, anterior, etc (prokaryote)
meso means middle (mesoderm, mesosphere)
meta means beyond, later, after development (metamorphosis)
Each of these got a pair of legs each. (Like ants. Head and abdomen would look eerie had they had legs)
The pro thorax's already gotta bear the neck. So it doesn't have wing.
Forewings, are at mesothorax.
(LOL. As I type that I spot an old, grown cockroach on the floor. Let us call him (oh, wait is it he? lemme see...Oh, it's got style. It's a male. Oops. seems like it didn't like the photo flash. Crept out of my hand. Let's let it go its own way. Lesson learned. No flash photography with nocturnal vision animals. (extreme sensitivity))
1 comment:
I wish NCERT was written like this, I could read that shit all day.
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