Phylum Echinodermata

Q.

Define the term tube feet.

Q. Exclusively marine animals which are triploblastic, exhibit radial symmetry in the adult stage and bilateral symmetry in the larval stages are placed under Phylum _____.

1. Annelida
2. Mollusca
3. Arthropoda
4. Echinodermata

Q. Which of the following characteristic feature is unique to phylum Echinodermata?

1. They are triploblastic.
2. They have true coelom.
3. They have spiny skin.
4. They are found only in marine environments.

Q. Which among the following is not the feature of Echinoderms?

1. Calcareous shell exoskeleton
2. Animals are mostly unisexual
3. Adults are radially symmetrical
4. Ability of regeneration

Q. Which of the following animal can regenerate if its body part is broken?

1. Chordata
2. Echinodermata
3. Hemichordata
4. Arthropoda

Q.

Which organisms has 1 chambered heart?

Q.

what are the larvae of urochordates called?

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

1. Echinodermata
2. Arthropoda
3. Nematoda
4. Porifera

Q. The animals with bilateral symmetry in the young stage and radial pentamerous symmetry in the adult stage belong to the phylum___________

1. Cnidaria
2. Echinodermata
3. Annelida
4. Mollusca

Q. Epimorphosis is

1. Degeneration of old organs
2. Regeneration of lost body parts
3. Regeneration of whole body from a small portion
4. None of the above

Q.

Is notochord present in Urochordata?

Q. How do annelids differ from arthropods? [3 MARKS]

Q. In phylum Platyhelminthes, the excretory organs are

1. Nephridia
2. Malpighian tubules
3. Flame cells (solenocytes)
4. Green glands

Q. Which of the following animals can regenerate arms and parts of the body?
(a) Star fish
(b) Brittle star
(c) Sea lily
(d) Aves

1. a and b
2. a, b and c
3. b and d
4. a and c

Q.

What is pseudocoelom?

Q. Which of the following is not a feature of Echinoderms?​

1. Spherical body​
2. Star-like appearance​
3. Water vascular system​
4. Smooth skin​