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 xylose isomeras, Explain xylose isomeras A mixture of glucose ...

Explain xylose isomeras A mixture of glucose and fructose, is produced from sucrose by the action of yeast invertase (β-fructofuranosidase), an enzyme which can only be extrac

Cardiac doppler, Doppler echocardiojgraphy measures blood  flow velocities ...

Doppler echocardiojgraphy measures blood  flow velocities  and direction of blood flow  in the heart add great vessels. The characteristics of blood flow are evaluated using both a

Evaluation of health services, CONCEPT AND MEANING OF EVALUATION: Eval...

CONCEPT AND MEANING OF EVALUATION: Evaluation of programmes is critical for measuring various community health services The ultimate reasons for doing evaluation is to ensure

Explain the oxidative phase of the pentose phosphate pathway, With the help...

With the help of reaction briefly explain the oxidative phase of the pentose phosphate pathway. The oxidative branch of the pathway generates NADPH and pentose-5 phosphate, th

What is the treatment process of mitral stenosis, Q. What is the treatment ...

Q. What is the treatment process of mitral stenosis? Presence of symptoms or any complications is an indication for treatment. Apart from penicillin prophylaxis no other treatm

Female reproductive system of frog, Female reproductive system of frog: ...

Female reproductive system of frog: i) Ovaries : a) There are a pair of ovaries present in the abdomen. b) They are grayish or blackish in colour. c) There are numerous cham

What is biodiverse ecosystems, What are some economic applications that can...

What are some economic applications that can be generated by very biodiverse ecosystems? Very biodiverse areas show enormous economic potential. They can be a source of raw mat

Amoeba, figure of contractile vacuole of amoeba

figure of contractile vacuole of amoeba

Aortic valvotomy-surgical techniques, Aortic Valvotomy :  These days ...

Aortic Valvotomy :  These days aortic valvotomy even in neonates and critically ill infants is done under cardio pulmonary bypass. Through a median stemotomy, ascending aorta

Explain sexual arousal mechanism in women, Q. How does the sexual arousal m...

Q. How does the sexual arousal mechanism in women facilitate fecundation? During sexual arousal in women the vagina secretes substances to neutralize its acidity thus allowing

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