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what is the difference between radial symmetry and bilateral symmetry since in both the body has to be divided into two equal halves.
The first largest phylum is Phyllum arthroproda and the second is phyllum mollusca,then which is the third one?
what are book lungs and book gills?
difference between unisexual and bisexual reproduction
WHAT ARE THE AERIAL ADAPTATIONS IN BIRDS?
what are ostia?
what is difference between gills AND BOOK GILLS
IS POREFERA TRIPLOBLASTIC OR DIPLOBLASTIC?
what are the differences between mesoglea and mesoderm
JUSTIFY THIS STATEMENT - "All vertebrates r chordates but all chordates r not vertebrates".
WHAT ARE THE ECONOMIC IMPORTACCO OF PHYLUM ARTHROPODA?
what is hypostome ( present in phylum cnidaria or phylum coelentereta)?
between intracellular and extracellular digestion?
what is the difference between metamerism and segmentation ??
BIRDS have monocondylic or dicondylic skull??
difference between polyp and medusa in tabular form
what is the difference between hemichordata and chordata?
At one time sponges were classified as plants. Why?
what is the differnece between vector and carrier??
what is blind sac body plan ?
calculate the number of molecules present in 22g of carbon dioxide
why ctenophora are known as sea walnuts and comb jellies?
WRITE THE GENERAL CHARACTERS OF THE CLASS MAMMALIA.
Is development direct in chondrichthyes?
What is the mode of nutrition of archaebacteria?
all vertebrates are chordates but all chordates are not vertebrates...explain in detail....3 marks...
difference b/w holothuria & cucumaria?
what is malpighian tubules ?
function of anal cirri in nereis ?
is tree density positively correlated to mosquito densities?why?
To which phylum does Hirudinaria belong to?
why are urochordates called tunicates?
1.]what is halophytic nutrition??
2.]what are sessile animals??
3.]what is spicules??
4.] what is an hermaphrodite organism??
what are choanocycles or collar cells?
difference between open type and closed type circulatory system in tabular form?
which is the most poisonous snake in the world?
What is the difference between pectoral and pelvic fins ? please provide a diagram as well.....
what is thallus?
In the flow chart for Phylum Chordata
Urochordata and Cephalochordata are known as Protochordates not Prochordates !!!!!!!!!!!!!
does scoliodon belongs to classChondrichthyes.
what is metagenesis in CNIDARIANS?
What Is archnature
what does ossified endoskeleton mean?
Is there any connecting link between
1.Amphibians and Reptiles
2.Aves and Mammals
what is ambulacral system ?
What do direct and indirect development mean?
Give one scientific term for the following:
1. Blood filled cavity in arthropods.
2.A collection of nerve cell bodies.
In cyclostomes ....are sexes separate and is development direct or indirect?
circulatory system of cockroach differs from that of the earth worm in:
1) lacking capillary network
2) lacking large blood vessels
3) possessing valves in large blood vessels
4) having a higher speed of circulation
An example of Pseudocoelom.
In hemichordates is digestion intracellular or extracellular and is the digestive system complete?
all vertebrates are chordates but all chordates are not vertebrates. justify.
plz show me diagram of wuchereria (filarial worm) plz plz plz help me .
Why are all sponges regardless of size, limited to feeding on microscopic food particles?
Justify the statement"Mmmalia are the most succesful and dominat animal today" ?
What are the characteristics of phylum-porifera?
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