First, a complete digestive system means that the digestive tract has a beginning or the oral end and the opposite end or the aboral end. This is found in more complex animals starting from roundworms (flatworms have an incomplete digestive tract). A closed circulatory system is found in animals more recent than mollusks. The presence of the coelom makes it more evolved than the flatworms.
Specifically, a small animal with a segmented body, short stiff appendages, and soft skin with the above characteristics point out to the phylum Annelida or annelids.
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B) plants get the energy they need for photosynthesis from sunlight
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In in vitro plant tissue culture, indolbutyric acid and other auxins are used to initiate root formation in a procedure called micropropagation. The micropropagation of plants is an asexual propagation or propagation technique that is based on the organogenetic potential of plant cells, which consists of cultivating in vitro on appropriate substrates, isolated cells, portions of yolk meristems, vegetative apices at the beginning of their development or microstaquillas. Small samples of plants used are called explants. Auxins such as indolbutyric acid can be used to cause mass formation of undifferentiated cells called corns. Callus formation is often used as a first step in the micropropagation process since, by exposure to certain auxin hormones, callus cells can be induced to form other tissues such as roots.
Indolbutyric acid is often used to promote the rooting of stakes. In a study in Camellia sinensis, the effect of three different auxins, indolbutyric acid, indolacetic acid and 1-naphthalenacetic acid on root formation was measured. According to the authors, indolbutyric acid produced a higher root yield compared to other auxins.9 This effect of indolbutyric acid is consistent with that found in other studies; This hormone is considered the most commonly used auxin for root formation, 10 because it is much more potent than indolacetic acid and other synthetic auxins.7
Jatropha curcas is a species in which there is an improvement in the quality of the rooting of the stakes with the addition of indolbutyric acid in the middle (longer root length, number of roots, percentage of rooted stakes, and dry root weight) , 11 although not always the effect on rooting is statistically significant.
C coz asexual means no mixing gametes between male and female parents. Child and parent is GENETICALLY IDENTICAL. can be found in plants. Examples include rhizome and bulbs.
Sexual reproduction involves both sex and two (haploid) gametes produce one (diploid) zygote
Inbreeding reduce genetic diversity coz parents of similar gene sequence produce offspring. Never lead to genetically identical offsprings because of crossing over of non-sister chromatids in meiosis I, random assortment of chromosomes in meiosis I, random fusion of sperms and eggs during fertilisation and mutations.
Selective breeding does not interfere directly with gene contents, only select individuals with preferable traits for reproduction to increase the chance of producing offsprings with said traits. Other traits of parent and offspring could be different.
A genotype is a genetic makeup of an organism that determines the phenotype, a characteristic that is expressed. E.g. genotype of blood type OB is made up of two alleles Io and Ib , this results in the person’s blood type to be B, the phenotype
