Eggs of frog, Biology

Assignment Help:

EGGS OF FROG

This egg is round & its diameter is of 1-2 mm.

It is mesolecithal & has distinct animal pole & vegital pole.

The nucleus is found in the centre of the animal pole & it contains many nucleoli.

The animal pole is pigmented and the vegital pole is light yellow due to presence of the yolk.

The pigmented animal pole provides mimicry and contains melanin pigments.

The egg is covered by a vitelline membrane and jelly coats.

The jelly coats are tasteless & act as bacteriacidial. Hence, the jelly coats provide protection to the egg. The jelly coats keeps the eggs floating on the water.

The forg's egg develops a grey crescent after fertilization. The grey crescent is a future blastopore.


Related Discussions:- Eggs of frog

Zoology, #question.characteristics of coelenterata?.

#question.characteristics of coelenterata?.

Criticism of darwinism, CRITICISM OF DARWINISM - Arriva l of the f...

CRITICISM OF DARWINISM - Arriva l of the fittest: Darwinism explains the survival of the fittest but was unable to account for the arrival of the fittest. V estigia

Give the details of colour vision, Give the Details of Colour Vision Th...

Give the Details of Colour Vision The genes for colour sense are located on the X chromosome (recessive inheritance) and on chromosomes 3 and 7. Changes in the cone pigments as

What, what are mendal low

what are mendal low

Importance of the brain evolved from fishes to reptiles, Q. How has the imp...

Q. How has the importance of the brain evolved from fishes to reptiles? From the least to the most complex brain structure, it is evident that the brain, from fishes to beings

Microbodies, MICROBODIES Single unit membrane bound small spherical str...

MICROBODIES Single unit membrane bound small spherical structures. Microbodies are structurally related to lysosome. On the basis of functions microbodies are of four typ

How can heart be affect, How can Heart be affect Heart may be affected ...

How can Heart be affect Heart may be affected in two ways. One of the complications of diabetes is autonomic dysfunction which may disturb rhythm of heart beat and may lead to

Explain the regulation of breathing and blood pressure, Which is the brain ...

Which is the brain region responsible for the regulation of breathing and blood pressure? The neural regulation of breathing, blood pressure and other physiological parameters

Why immune mechanism of body of a patient gets suppressed, Name the disorde...

Name the disorder in which the immune mechanism of the body of a patient gets suppressed. Which pathogen is responsible for it? Give any two reasons of its transmission.

How do mineral salts participate in enzymatic activity, How do mineral salt...

How do mineral salts participate in enzymatic activity? Many mineral salts are cofactors of enzymes. i.e., they are substances without which enzymes do not work.

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