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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?
what are the differences between mesoglea and mesoderm
difference between unisexual and bisexual reproduction
WHAT ARE THE AERIAL ADAPTATIONS IN BIRDS?
the hypnotoxin produce by
b.volvent c.large gultinant d. small gultinant
what is difference between gills AND BOOK GILLS
IS POREFERA TRIPLOBLASTIC OR DIPLOBLASTIC?
JUSTIFY THIS STATEMENT - "All vertebrates r chordates but all chordates r not vertebrates".
what is the meaning of post anal tail in phylum chordate?
WHAT ARE THE ECONOMIC IMPORTACCO OF PHYLUM ARTHROPODA?
between intracellular and extracellular digestion?
Is development direct in chondrichthyes?
BIRDS have monocondylic or dicondylic skull??
phylum coelenterata are sessile. what is sessile?
difference between polyp and medusa in tabular form
what is the difference between hemichordata and chordata?
what is the differnece between vector and carrier??
At one time sponges were classified as plants. Why?
what is blind sac body plan ?
calculate the number of molecules present in 22g of carbon dioxide
WRITE THE GENERAL CHARACTERS OF THE CLASS MAMMALIA.
what is hypostome ( present in phylum cnidaria or phylum coelentereta)?
What is the mode of nutrition of archaebacteria?
why ctenophora are known as sea walnuts and comb jellies?
what is the difference between metamerism and segmentation ??
Why are mammals so named?
all vertebrates are chordates but all chordates are not vertebrates...explain in detail....3 marks...
what are the exceptions in biology?
Is cnidaria hermaphrodite?
what is malpighian tubules ?
what is the function of muscular phaynx of aschelminthes ?
is tree density positively correlated to mosquito densities?why?
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 ostia?
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?
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
what is thallus?
What is the difference between pectoral and pelvic fins ? please provide a diagram as well.....
In the flow chart for Phylum Chordata
Urochordata and Cephalochordata are known as Protochordates not Prochordates !!!!!!!!!!!!!
what is metagenesis in CNIDARIANS?
what does ossified endoskeleton mean?
Is there any connecting link between
1.Amphibians and Reptiles
2.Aves and Mammals
could the no of eggs produced by an oviparous and viviparous mother b equal?why?
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.
what is cycloid or ctenoid scales???
in class osteichthyes caudal fin is homocercal.. plz explain the underlined words..
what is the function of operculum???
An example of Pseudocoelom.
genaral charectics pf phyllum arthopoda.
all vertebrates are chordates but all chordates are not vertebrates. justify.
plz show me diagram of wuchereria (filarial worm) plz plz plz help me .
Justify the statement"Mmmalia are the most succesful and dominat animal today" ?
What are the characteristics of phylum-porifera?
what is oviviviparous ??
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