Question

fill in the blanks
1) digestion is............ in branchiostoma.
2) elasmobranchs have a.........mouth.
3)the flagellated chambar of the canal system of spongs is line by.........
4)the ............. of the filarial worm releases small microfilariae into blood and lymphatic system.
5)the special comb -like sense organs of scorpions is called.............​

Answer 1

Answer:

1.extracellular

2.ventral

3. collar cells

4.- --

5.----

I don't know the answers of 4 and 5

Answer 2

Fill in the blanks are as follows:

1) The direction is both intracellular as well as extracellular in Branchiostoma.

This is a unique feature in Branchiostoma. The food is absorbed by hindgut and excreted through the anus.

2) Elasmobranchs have several teeth in their mouth. Both upper jaw and lower jaw help to differentiate the elasmobranch clades.

3) The flagellated chambers of the canal system in sponge lined by internal openings called apopyles.

4) The Wuchereria bancrofti is the filarial worm that releases small microfilaria into the blood and lymphatic system.

5) The special complex sense organs of Scorpion is called trichobothria.

The scorpion belongs to the species is called Arachnida.