Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
ENDOCRINE GLANDS OF AN INSECT -
The endocrine glands of cockroach are as follows.
1. Intercerebral gland cells. These cells lie in the brain. They secrete brain hormone which activates the protho- racic glands to secrete their hormone.
2. Corpora Cardiaca. These are a pair of elongated structures situated on either side of the oesophagus behind the brain. They secrete a growth hormone which increases heart rate, peristalsis of hind gut but decreases the peristalsis of the foregut. It also regulates protein metabolism.
3. Corpora Allata. These are a pair of srnaIl rounded bodies lying just behind the corpora cardiaca. They secrete a juvenile hormone or neotenine hormone in the nymph. This hormone retains the nymphal characters and checks the appearance of the adult characters. When the juvenile hormone is absent, it permits the appearance of the adult characters. In adult the corpora allata again become active and secrete gonadotropic hormone.
4. Prothoracic glands. These are fairly large, irregular in shape and situated in the prothorax. They secrete a hormone caIled ecdyson (steroid hormone) which controls last exuviae or moulting of the nymph. These glands degenerate after metamorphosis.
Transported Soils These soils are formed from the weathered material which is transported and deposited away from the site of origin. Depending upon the nature of the transport
how does temperature affect the rate of cellular respiration? please explain with great detail!
Goals of Computerization in Nursing Practice Improved Efficiency: Computers can rapidly process, store, and retrieve information, helping the nurse clinician in nursing
Airway: Place the patient supine on a firm surface with his head at level or slightly lower than the level of heart. Immediately, clear the airway and start rescue brea
Illustrate about the primary minerals The minerals originally formed when once -heated magma (molten rock) cooled and formed solid igneous rocks (explained below) are called as
Gills - Respiration Gills are highly vascularised extensions of gas exchange membranes. The simple type may be extension of the body surface as in sea-slugs, sea stars and ma
Explain Prophylaxis of lyme disease No vaccine is currently available to prevent Lyme disease in humans. Avoidance of ticks and use of tick repellents such as DEET or picaridin
THEOR Y OF EPIGENESIS - It was propounded by C. F. Wolff and supported by Von Baer. According to it, the egg contains the substances which are required in the formation
Explain about the Picric acid test? This test is answered by all reducing sugars, with a free aldehyde or ketone groups. Monosaccharides possess a free aldehyde or ketone group
WHAT TRAITS ALLOWED VASCULAR PLANTS TO GROW TALL
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd