Question

3. Tick [ √ ] the correct option: [5]

(i) Which of the following is an example of mollusc?

a) scorpio

b) sponges

c) star fish

d) snail

(ii) Which of the following has a segmented body?

a) snail

b) earthworm

c) tapeworm

d) hookworm

(iii) Pheretima is another name of

a) silkworm

b) earthworm

c) king crab

d) round worm

(iv) Fasciola is the example of

a) round worm
b) annedids

c) arthopoda

d) flat worm

(v) The second largest phyla of invertebrate is

a) annelida

b) arthapoda

c) mollusca

d) echinodermata​

Answer 1

$\huge\frak {Answer :}$

I) Which of the following is an example of mollusc?

a) scorpio

b) sponges

c) star fish

$\checkmark$d) snail

→ Snail falls under the phylum mollusc as mollusc means lacking an internal skeleton and bones.

(ii) Which of the following has a segmented body?

a) snail

$\checkmark$b) earthworm

c) tapeworm

d) hookworm

→ The animals in the phylum Annelida are segmented worms, that is, earthworm has segmented body.

(iii) Pheretima is another name of

a) silkworm

$\checkmark$b) earthworm

c) king crab

d) round worm

→ Pheretima posthuma is scientific name of earthworm.

(iv) Fasciola is the example of

a) round worm

b) annedids

c) arthopoda

$\checkmark$d) flat worm

→ Fasciola falls under the category of Platyhelminthes which are basically flatworms.

(v) The second largest phyla of invertebrate is

a) annelida

b) arthapoda

$\checkmark$c) mollusca

d) echinodermata

→ Mollusca is the second largest phylum in animal kingdom.They are generally, bilaterally symmetrical, triploblastic, etc.

Answer 2

Answer:

i- Snails

ii- Earthworm

iii- king crab

iv- Arthopoda

v- Mollusca