In which of the following animals the adults have pentamerous radial symmetry while their larvae are bilaterally symmetrical?

(1) Arthropods

(2) Molluscs

(3) Echinoderms

(4) Annelids

Endoskeleton of calcareous ossicles, external fertilization, adults shows radial symmetry, development indirect.

The above-given feature is true for:-

1. Echinus, Asterias

2. Pila, ophiura

3. Antedon, Aplysia

4. Pinctada, cucumaria

Match column I and column II with respect to animal and its common name

1. (i)→(a), (ii)→(b), (iii)→(c), (iv)→(d)

2. (i)→(d), (ii)→(b), (iii)→(a), (iv)→(c)

3. (i)→(d), (ii)→(c), (iii)→(a), (iv)→(b)

4. (i)→(d), (ii)→(a), (iii)→(c), (iv)→(b)

Which of the following is not an annelid?

1. Leech

2. Earhtworm

3. Sea mouse

4. Sea cucumber

Find out the correct match from the following table:-

1. (i) only 
2. (i) and (ii)
3. (iii) only
4. (ii) and (iii)

Excretory system is absent, sexes are separate,
fertilization is usually external this is correct for :

1.		2.
3.		4.

Which of these is not a coelenterate?

(1) Sea pen

(2) Sea fur

(3) Sea anemone

(4) Sea lily

Animals without excretory system, separate sexes,
and calcareous endoskeleton are applicable for

1. Chaetopeura 

2. Ophiura

3. Limulus 

4. Spongilla

Vertebrates and seastars may seen as different as two
animal groups can be, yet they share
1. The same type of body symmetry as adults.
2. A high degree of cephalization.
3. Certain developmental pattern, including the type
of coelom formation.
4. The presence of endoskeleton that include
cranium

The most distinctive feature of echinoderms is the presence of a water vascular system which helps in
(A) Locomotion
(B) Excretion
(C) Respiration
(D) Reproduction

1. (A) only
2. (B) & (C) only
3. (A), (B) & (C) only
4. (A), (B), (C) & (D)