Which one of the following animals lay eggs yet the female secretes milk?
Bat
Kangaroo
Platypus
Ostrich
C.
Platypus
Duckbilled platypus (Ornithorhyncus anatinus) is a semi-aquatic prototherian found in Australia and Tasmania. In these, the females lay eggs but yet produce milk and possess mammary glands without teats. Milk collects in two abdominal grooves from where the young ones obtainit through lapping.
Sycon belongs to a group of animals which are best described as
multicellular with a gastrovascular system
multicellular having tissue organisation, but no body cavity
unicellular or acellular
multicellular without any tissue organisation
Gemmule formation in sponges are useful in
asexual reproduction
sexual reproduction
parthenogenesis
parthenocarpy
During its life cycie, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively
metacercaria and ceracaria
miracidium and metacercaria
redia and miracidium
cercaria and redia
