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

Green gland is the excretory organ of

• prawn

• butterfly

• snail

• earthworm

The parasite, which completes its life cycle in a single host is

• Fasciola hepatica

• Plasmodium vivax

• Taenia solium

• Ascaris lumbricoides

Name one disease of mulberry silkworm caused by Protozoa

• pebrine

• graseri

• flacheri

• muscardine

Water vascular system is present in which of the following phylum?

• Porifera

• Cnidaria

• Ctenophora

• Echinodermata

In which triploblastic animal, coelom is absent?

• Platyhelminthes

• Aschelminthes

• Annelids

• Arthropoda

Pith is absent in

• protostele

• eustele

• amphiphloic stele

• ectophloic stele

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

Seed habit originated in

• Bryophyta

• Pteridophyta

• Gymnosperms

• Angiosperms