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

Define the improper prosthetic designing, Improper Prosthetic Designing ...

Improper Prosthetic Designing is also a cause of failure and it reiterates the importance of planning the case with the end in mind. The choice between fixed or removable prost

Observations reveal about mechanisms of sex determination, XYY humans are f...

XYY humans are fertile males. XXX humans are fertile females. What do these observations reveal about the mechanisms of sex determination and dosage compensation?

Classification levels of blood pressure, Table gives the current classifica...

Table gives the current classification of hypertension as recommended by JNC VII. The classification is based on the mean of two or more seated readings on two or more occasions.

Nuclear membrane - structure of nucleus, KARYOTHEC A OR NUCLEAR MEMBRANE ...

KARYOTHEC A OR NUCLEAR MEMBRANE It is also called Nucleolemma, term given by Erclab & Hertwig. Karyotheca composed of two unit membranes separated by a 150-300 A° wide p

Which is the brain regions associated with memory, Q. Which is the brain re...

Q. Which is the brain regions associated with memory? According to researchers some of the major regions of the nervous system associated with the memory phenomenon are the hip

Determine the types of blood, Determine the types of blood There are th...

Determine the types of blood There are three types of blood cells. They are Red Blood Corpuscles (RBC), White Blood Corpuscles (WBC) or leucocytes and blood platelets or thromb

Entry of pollen tube into the embryo sac, Entry of Pollen Tube into the Emb...

Entry of Pollen Tube into the Embryo Sac The pollen tube enters the embryo sac through the filiform apparatus of ong of the synergids. Generally, one of the synergids degenera

What are the possible genotypes for its parents, Roan (RW) is a color of ca...

Roan (RW) is a color of cattle in which both red and white hairs are present due to codominance. What are the phenotype and genotype ratios of offspring produced by: roan bull and

Clinical criteria for diagnosis of infective endocarditis, Major Criteria ...

Major Criteria 1) Positive blood culture • Typical microorganism for infective endocarditis from two separate blood cultures Viridans streptococci, Streptococcus bovis, HAC

What hormones participate in digestive secretions, Q. The releasing of dige...

Q. The releasing of digestive secretions is controlled by hormones. What are the hormones that participate in this regulation? The hormones that participate in the regulation o

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