what is the difference between radial symmetry and bilateral symmetry since in both the body has to be divided into two equal halves.

what are the differences between mesoglea and mesoderm

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 is thallus?

JUSTIFY THIS STATEMENT - "All vertebrates r chordates but all chordates r not vertebrates".

WHAT ARE THE ECONOMIC IMPORTACCO OF PHYLUM ARTHROPODA?

what is the function of muscular phaynx of aschelminthes ?

Distinguish between intracellular and extracellular digestion?

Give True or False.

a) Gymnosperms differ from Angiosperms in having covered seed.

b) Non-flowering plants are called Crytogamae.

c) Bryophutes have conducting tissue.

d) Funaria is a moss.

e) Compound leaves are found in many ferns.

f) Seeds contain embryo.

what is the difference between metamerism and segmentation ??

BIRDS have monocondylic or dicondylic skull??

RADIAL SYMMETRY IS NOT FOUND IN .....1] HYDRA 2] STARFISH 3] SPONGE 4] SPIDER

difference between polyp and medusa in tabular form

Define the terms and give one example of each.

a) Bilateral symmetry b) Coelom C) Triploblastic

what is the difference between hemichordata and chordata?

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

What is the difference between cnidaria and ctenophores? Is ctenophore a part of coelenterata too? Please give complete information

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...

function of anal cirri in nereis ?

what is malpighian tubules ?

why ctenophora are known as sea walnuts and comb jellies?

is tree density positively correlated to mosquito densities?why?

what is hypostome ( present in phylum cnidaria or phylum coelentereta)?

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?

Why are all sponges regardless of size, limited to feeding on microscopic food particles?

why is octopus kept in phylum mollusca???????

it dosent have any shell????????

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

 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.

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.

what is number of sigma and pi bond in cacl2

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" ?

Difference between Tortoise(Testudo) and Turtle(Chelone) ?

What are the characteristics of phylum-porifera?