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

Determine the change in the amount of intracellular chloride, Determine the...

Determine the change in the amount of intracellular chloride Complete motor neuron is removed from a frog and placed in a large volume of normal physiological saline.  The neur

What is the typical localization of the tropical forests, What is the typic...

What is the typical localization of the tropical forests regarding latitude? The Tropical rain forests, like the Congo forest and the Amazon forest, are typically located in lo

Gonad glands, what are the gonad gland disorders and what do they do

what are the gonad gland disorders and what do they do

Zoochory - dispersal of seeds, Zoochory - Dispersal of Seeds Some frui...

Zoochory - Dispersal of Seeds Some fruits are eaten by animals and the seeds are passed out with the excreta (endozoochory). Plums, Lantana, grapes, figs and guava are example

Explain cap site, Cap site Two usages are given below: 1] In eukaryotes...

Cap site Two usages are given below: 1] In eukaryotes, the cap site is position in the gene at which transcription begins, and really should be called the "transcription initia

How can bacteria produce human insulin, Q. How can bacteria produce human i...

Q. How can bacteria produce human insulin on an industrial scale? What are the other forms of insulin made available by the pharmaceutical industry? Bacteria don't naturally sy

Explain magnitude and direction of the electrostatic force, Three charges a...

Three charges are arranged as shown in the figure below. Find the magnitude and direction of the electrostatic force on the charge q = 4.78 nC at the origin. (Let r12 = 0.260 m.)

Define the types of canned foods, Define the Types of Canned Foods? 1....

Define the Types of Canned Foods? 1. Some foods form convection currents when being heated inside a can and so are heated faster since self-mixing - as foods become more visco

Explain the stages in taxonomic procedures - gamma taxonomy, Explain the st...

Explain the stages in taxonomic procedures - Gamma Taxonomy This phase of taxonomy is also called biological taxonomy and is concerned with the study of speciation. It is inclu

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