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!
Spermatophores
Many non-chordates do not release free sperms during copulation. They have a mechanism to bundle and enclose a number of sperms in a sheath usually made of gelatinous material. Such bodies are called spermatophores. Most insects, the centipedes and certain molluscs produce spermatophores. Male centipede emits spermatophores and places it on a web already made. The female picks up the spermatophores and takes it into her genital opening. In many male cephalopods such as Loligo and Argonauta one of the arms gets specialised for the transfer of spermatophore into the females. Such an arm is called hectocotylized arm. The spermatophore, after having been deposited in the female, finally releases the sperms which move into the female ducts or the spermathaca.
Palaeobiology : This deals with the study of fossils and remains an impressions of the past organisms found in the rock of different ages. Paleobiology is a growing or comparativel
Algae have cell wall made up of: 1. Cellulose, galactans and mannans 2. Hemicellulose, pectins and proteins 3. Pectins, cellulose and proteins 4. Cellulose, hemicellulo
Q. What structure of the eye produces tears? Lachrymal gland, which is a part of larger lachrymal apparatus, produces tears that flow over anterior surface of the eye. Most of
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
What is the relationship between the following scientific terms: hypothesis, a theory, and a natural law?
Discuss about electric field The electric field is a vector quantity whose magnitude is the force per unit charge and points in the direction of the force on the positive test
Measles: The causative organism for measles is paramyxovirus. Disease spreading takes place through the nasal discharge and saliva of persons affected with measles by dro
What would happen to a cell if it was placed into a hypertonic solution? Into a hypotonic solution? What would happen to a cell if the cell itself was hypertonic to the solution?
NUCLEUS First described and christened by Robert brown 1831, a nucleus is the largest and most important organelle of eukaryotic cells. It is membrane bound and generally locat
all about excretion
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