Water vascular system is present in which of the following phylum?
Porifera
Cnidaria
Ctenophora
Echinodermata
D.
Echinodermata
The water vascular system is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. It is composed of canals connecting numerous tube feet.
The parasite, which completes its life cycle in a single host is
Fasciola hepatica
Plasmodium vivax
Taenia solium
Ascaris lumbricoides
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
Small particles projecting from the inner membranes and cristae of mitochondria are known as
myeloid bodies
microsomes
informosomes
oxysomes
In which of the following phyla, compound eyes are present?
Annelida
Arthropoda
Mollusca
Echinodermata