Pith is absent in
protostele
eustele
amphiphloic stele
ectophloic stele
A.
protostele
Protostele is simplest and most primitive type of stele, in which, vascular cylinder consists of solid core of xylem surrounded by phloem, pericycle and endodermis. There is no pith.
In which of the following phyla, compound eyes are present?
Annelida
Arthropoda
Mollusca
Echinodermata
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
The parasite, which completes its life cycle in a single host is
Fasciola hepatica
Plasmodium vivax
Taenia solium
Ascaris lumbricoides
Small particles projecting from the inner membranes and cristae of mitochondria are known as
myeloid bodies
microsomes
informosomes
oxysomes
Water vascular system is present in which of the following phylum?
Porifera
Cnidaria
Ctenophora
Echinodermata