Tag: animal behaviour

Bed bug ,sand fly silk worn are placed in tracheate  group of Arthropoda because they have trachae for  respiration Embryonic development of echinoderms shows a number of similarities with those of chordates .

The yellow-coloured milk secreted by cattle soon after the birth of a calf is called as colustrum. Colostrum contains antibodies to protect the newborn against disease. Colostrum is known to contain immune cells (as lymphocytes) and many antibodies such as IgA, IgG and IgM. However, the most abundant immunoglobulin in colostrum is IgA.

The yellow-coloured milk secreted by cattle soon after the birth of a calf is called as colostrum. It is rich in antibodies that confer passive immunity to the newborn

Species diversity is the number of different species that are represented in a given community. The two main factors taken into account when measuring diversity are richness and evenness. The habitats c and d have a higher species richness as compared to habitat a and b as both of them have 10 different types of species, while a and b have 8 and 7 different types of species respectively. However, habitat d has more species evenness as compared to habitat c. Since, the species diversity depends both on the species richness and the species evenness, so species d has a higher species diversity as compared to species c. So, the correct option is 'd'.

An organism is said to behave altruistically when its behaviour benefits other organisms, at a cost to itself. The costs and benefits are measured in terms of reproductive fitness, or expected number of offspring. So by behaving altruistically, an organism reduces the number of offspring it is likely to produce itself, but boosts the number that other organisms are likely to produce.