MyQuestionIcon

4

You visited us 4 times! Enjoying our articles? Unlock Full Access!

Phylum Echinodermata

Hard calcium ...

Question

Hard calcium carbonate structures are used as skeleton by_______________.

A

Echinodermata

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

Protochordata

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Arthropoda

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

Nematoda

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Echinodermata
The body wall of Echinodermata is covered with spiny, hard, calcareous (calcium carbonate) plates (ossicles) that form a rigid or flexible endoskeleton.
So, the correct answer is option A.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Question 28
Hard calcium carbonate structures are used as skeleton by

(a) Echinodermata
(b) Protochordata
(c) Arthropoda
(d) Nematoda

Q. Which among the following contains hard calcium carbonate structures as the constituent part of their skeleton?

Q. .......... have a hard calcium carbonate structure.

Q. Calcium bicarbonate causes hardness in water but not calcium carbonate. Why?

Q. Hardness of water is expressed in terms of parts per million of calcium carbonate. A sample of water contains

0.02 %

of calcium carbonate, hardness of the sample is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Phylum Echinodermata

BIOLOGY

Watch in App

explore_more_icon

Explore more

Phylum Echinodermata

Standard XII Biology

Join BYJU'S Learning Program

CrossIcon