Green gland is the excretory organ of
prawn
butterfly
snail
earthworm
A.
prawn
In many higher crustaceans the excretory glands are located in the head. They are called antennal glands or maxillary glands, depending on whether they open at the base of the antennae or at the maxillae. If the tubule adjacent to the excretory pore is green, the gland is called a green gland.
Malphigian tubules is the excretory organ of butterflies. It is mainly to keep a constant level of salts and water in the haemolymph or blood of the butterfly. It is also to get rid of toxic compounds that are produced during metabolism.
Nephridium is the excretory organ of snails and earthworm. In Snails, it basically removes the nitrogenous waste and maintains the internal water balance. In earthworm, carbon dioxide is excreted out from the body through its moist skin by the process of diffusion.
Which one of the following is the infective stage of Ascaris lumbricoides?
Unsegmented egg
Egg with first stage larva
Egg with second stage larva
Free third stage larva
In which of the following phyla, compound eyes are present?
Annelida
Arthropoda
Mollusca
Echinodermata
Water vascular system is present in which of the following phylum?
Porifera
Cnidaria
Ctenophora
Echinodermata
Mesoglia is seen in between
ectoderm and endoderm
ectoderm and mesoderm
mesoderm and endoderm
just below mesoderm
The parasite, which completes its life cycle in a single host is
Fasciola hepatica
Plasmodium vivax
Taenia solium
Ascaris lumbricoides
