Show the embryological evidence, Biology

Assignment Help:

Q. Show the Embryological Evidence?

Embryology is the study of the successive stages of sporogencsis , gametogenesis and the growth and development of the embryo. The number of nuclei in the pollen grains at the time of pollen dispersal is either two or three. Double fertilisation is an example of embryological unity throughout the angiosperms. Based on the number of cotyledons, monocotyledons are separated from dicotyledons. The binucleate pollen is derived. Embryology has had systematic significance in the grass family, where with several other characters it has been used to revise the family's classification. In animals the embryological evidence is of great significance, e.g. the Anopheles maculipennis complex is broken into a number of sibling species on the basis of their egg structure. In Dacus oleae and ceratitis capitata.(fruit flies) the whole eggs are separated on the basis of the character of anterior pole and the whole classification of white flies is primarily based on the structure of their pupae.

2096_Embryological Evidence.png


Related Discussions:- Show the embryological evidence

Explain about adhesive tape of many varieties, Explain about Adhesive tape ...

Explain about Adhesive tape of many varieties Adhesive tape of many varieties with backing materials coated with an adhesive to keep the dressing in place. The adhesive bandage

Origin of cell wall, Origin of Cell Wall - The cell wall is product ...

Origin of Cell Wall - The cell wall is product of cytoplasm. The cytoplasmic organelles such as endoplasmic reticulum, golgi apparatus play a very important role in the f

Coccidiosis, C o c c i d i o si s It is a protozoan disease, c...

C o c c i d i o si s It is a protozoan disease, caused by Eimeria species, resulting in enteritis, debility and anaemia. E t iology: It is caused by E.

What is aortic enlargement, Q. What is Aortic Enlargement ? Ascending ...

Q. What is Aortic Enlargement ? Ascending Aorta: The ascending aorta, along with the SVC forms a portion of the right cardiac border on the PA view. After the age of about 40

Admission procedure - nursing, Admission Procedure   From the time  the...

Admission Procedure   From the time  the child and his family enter the hospital doors, the admission procedure should be carried out in a friendly and efficient manner. Admiss

Applications of various technologies in biotechnology, Question 1: Brie...

Question 1: Briefly explain the applications of various technologies in biotechnology. Definition of biotechnology Brief on different applications of various technolo

Protozoans - regeneration in invertebrates, Protozoans - Regeneration i...

Protozoans - Regeneration in Invertebrates Most single celled animals such as protists, i.e. protozoans, regenerate very well. If part of the cytoplasm is removed from the

What functions performed by vitamin and mineral for athletes, What function...

What functions performed by Vitamin and Mineral for athletes? Vitamins and minerals perform the same essential functions for athletes and non-athletes alike. However, owing t

Explain major divisions of the hypophysis, Q. What are the major divisions ...

Q. What are the major divisions of the hypophysis? What are their functions? The hypophysis is divided into two portions- the anterior hypophysis or adenohypophysis and the pos

Nitrification - nutrient cycles, Nitrification - Nutrient Cycles Ammon...

Nitrification - Nutrient Cycles Ammonia or ammonium salts, are converted into nitrate in a process termed nitrification to be useful to most autotrophic and heterotrophic orga

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