Eyelids, Biology

Assignment Help:

EYELIDS -

  • 3 in number. Dermis is thinnest in it. Upper and lower eye lid with eye lashes. Upper eye lid is more motile
  • In reptiles lower eye lid is more motile. In cyclostomate, bonny fishes eye lids are absent.
  • In snakes eye lids are immovable. Third one is nictitating membrane which is thin & transparent.
  • In man it is vestigeal know as Plica seminularis. Nictitating membrane of sharks & frogs is prolongation of lower eye lid.

Related Discussions:- Eyelids

What are chloroplasts, What is the main function of chloroplasts? Ans) C...

What is the main function of chloroplasts? Ans) Chloroplasts are organelles represent in the cytoplasm of plant and algae cells. Similarly mitochondria, chloroplasts have two bo

What is the expected phenotypic proportion, In tomatoes, two alleles of one...

In tomatoes, two alleles of one locus determine the character difference of purple versus green stems (alleles are P and p with P being completely dominatn and coding for purple st

How different are fecundation in chondrichthyes, Q. How different are fecun...

Q. How different are fecundation in chondrichthyes and in osteichthyes? In chondrichthyes fecundation is internal by resources of copulation. In osteichthyes fecundation genera

What is glycolysis, What is glycolysis? What are the products of this proce...

What is glycolysis? What are the products of this process? Glycolysis, the first stage of the aerobic cell respiration, is a process in which glucose is degraded (broken) to fo

Side effects of sedatives and hypnotics, Side Effects of Sedatives and Hypn...

Side Effects of Sedatives and Hypnotics: Side effects are same  like anti anxiety drugs such as hypotension, palpitation, syncope (fainting), change in libido, physical or psy

Renal failure and transplantation, KIDNE Y (RENAL FAILURE) - RF - Part...

KIDNE Y (RENAL FAILURE) - RF - Partial or total inability of kidney to carry excretory functions is called RF. It leads to uremia (excess of urea in blood), salt-water imba

What is a homologue, Single chromosome of a pair is known as homologue.In H...

Single chromosome of a pair is known as homologue.In Homologous pair two identical chromosomes are there. Each one chromosome in a Homologous pair is known as Homologue.

Digestive enzymes, Digestive Enzymes Now let us consider the general p...

Digestive Enzymes Now let us consider the general principles of digestion that are applicable t6all animals. We will start with the digestive enzymes that breakdown the large

Studying leaf arrangements, Studying leaf arrangements Observe as many ...

Studying leaf arrangements Observe as many growing plants as possible by looking down on them from above. Draw sketches of the dissimilar patterns of leaf arrangement.

Phylum ciliophora - protozoan, Phylum Ciliophora - Protozoan Simple ci...

Phylum Ciliophora - Protozoan Simple cilia or compound ciliary organelles typical in at least one stage of life cycle; subpellicular cilia present even if surface cilia are ab

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd