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2 vaccinations against various childhood diseases have contributed to the entry of women particularly mothers into the
if baroreceptors are primed to detect blood pressure changes and compensate for them how is it that some patients suffer from chronic
solitary and colonial formsanimals may lead their lives either like individuals or in groups while they exist as individuals they are termed as
my homework is asking me to find the four possible gametes for two parents using their genotypes how do i do that would i use the foil
adaptive radiationsthe organisms all the time tend to establish harmony with their environment this process called adaptation enables the organism to
polychaete mollusca and echinodermatapolychaete and mollusca the polychaetes have a trochophore larva a common trochophore larva is top shaped
cnidaria and platyhelminthes - larval formscnidariathe common larval stage that is found in cnidarians is the planula which forms following
cnidaria - protozoathe mature medusoid jellyfishes like aurelia are the sexual stages sperms and eggs produced in the dissimilar male and female
artificial parthenogenesis in various cases the eggs that normally develop only after fertilisation can be experimentally induced to develop
copulation and fertilisation in hermaphrodites copulation between hermaphrodites is common flatworms possess a cirrus and penis that is inserted into
kinds of hermaphroditism depending upon the timing of maturity of the gonads hermaphroditism can be of two types1 simultaneous hermaphroditism both
hermaphroditismyou would have completely appreciated now that sexual reproduction is definitely the more advanced type of reproduction it gives for
ovipary vivipary and ovovivipary in each case of external and in some cases of internal fertilisation development of the fertilized egg zygote occurs
spermatophoresmany non-chordates do not release free sperms during copulation they have a mechanism to bundle and enclose a number of sperms in a
mating and fertilisationin all animals sperms are motile and have to move and seek the eggs to fertilise them for this an aqueous environment is
reproductive organsin several metazoans gonads are well-defined testes and ovaries take up dissimilar shapes and anatomical dispositions in cases of
conjugation - patterns of sexual reproductionconjugation is a temporary union among two individuals of the same species during which the original
syngamy - patterns of sexual reproductionsperm fuses with the egg this results in both the union of the paternal nucleus with the maternal one
characteristics of gametesfollowing are some general characteristics of gametes1 the female gametes are usually laden with food material the yolk
sexual reproduction all metazoans if or if not capable of propagating asexually produce special cells termed as gametes the gametes may be either
asexual reproduction - its prevalence and significance having studied the several aspects of asexual reproduction in the non-chordates we can now
polarity in regeneration a distinct polarity or gradient exists in planarians and in other animals the meaning of this is that in any piece or
autotomy and regeneration shedding of body parts in self-defense to avert the attention of the predator-enemy or in any other emergency is a type of
fragmentation and regeneration both the situations mentioned above that is whether occurring naturally or accidentally can in general be categorized