Sexual reproduction, Biology

Assignment Help:

SEXUAL REPRODUCTION

1.       Amphigony        -          Zygote is formed.

(i) Syngamy

Fusion of gametes.

(a) Endogamy - It involves self fertilisation. e.g. Taenia.

(b) Exogamy - It involves cross fertilisation. e.g. Earthworm, cockroach.

Again syngamy is of 2 types - (i) Isogamy - monocystis

(ii) Anisogamy - rest all

Special form of syngamy-

(i) Neotany - Sexual reproduction in larval stage, e.g. axolotal larva of ambyostoma, urochordata.

(ii) Polyembryony - The blastomeres formed by division of zygote separate at early stage. Each produces a complete individuals. e.g. flateworm, identical twins, armadillo produces 4 young ones from one zygote.

1412_male reproductive system.png

700_male reproductive system.png2213_male reproductive system rabbit.png


Related Discussions:- Sexual reproduction

Colibacillosis of poultry, Colibacillosis of poultry Colibacillosis is...

Colibacillosis of poultry Colibacillosis is an important disease among poultry, especially among broiler chicks aged 6-9 weeks and less frequently of young chicks during first

Define post-surgical nutrition support for chd patient, Define Post-surgica...

Define Post-surgical Nutrition Support for CHD Patient? Nutrition support should be started as soon as possible. If oral not possible, enteral nutrition support should be pr

Emergence of contemporary biology, EMERGENC E OF CONTEMPORARY BIOLOGY - ...

EMERGENC E OF CONTEMPORARY BIOLOGY - 1 .       Aristotle (384-322BC) - Greek Classified animal species and arranged them in hierarchies. Formulated 'Great chain of

Define use of soy protein concentrates in meat products, Define Use of Soy ...

Define Use of Soy Protein Concentrates in Meat products? This area probably represents the most important application of soy protein concentrates (SPC) in the food industry. SP

Why fish and sea foods are important for human body, Why Fish and Sea Foods...

Why Fish and Sea Foods are important for human Body? They are rich sources of proteins (20-25%) of a high biological value. Dry fishes contain more (60%) proteins since most of

Timber, what is cup shake?

what is cup shake?

Migration - population dispersal, Migration - Population Dispersal Dis...

Migration - Population Dispersal Dispersal is affected by the presence or absence of the barrier and vagility which means inherent power of movement also called dispersal powe

Explain indications for surgery of congenital pulmonary, Explain Indication...

Explain Indications for Surgery of Congenital Pulmonary Stenosis ? Interventional treatment is required for all neonates presenting with critical pulmonary valvar stenosis. Thi

Stabilisation - climax, Stabilisation - Climax The whole process of s...

Stabilisation - Climax The whole process of succession results in stabilisation of the vegetation which is now in complete harmony with the environmental complex of that plac

Symptoms of botulism, Adult Botulism The symptoms of botulism may deve...

Adult Botulism The symptoms of botulism may develop between 12 and 72 hours after the ingestion of toxin containing foods. Symptoms include nausea, vomiting, fatigue, dizzine

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