Read the statements regarding echinoderms and choose the correct option

(1) All are marine with organ system level of organisation.

(2) Adults are bilaterally symmetrical.

(3) They are dioecious.

(4) Fertilisation is internal and indirect development is observed.

(5) Triploblastic and acoelomate animals.

• (1) and (3) are correct

• (5) alone is correct

• (1), (3) and (5) are correct

• (1) and (5) are correct

• (1) and (5) are correct

This class of animals are all ectoparasites on some fishes

• Amphibia

• Osteichthyes

• Reptilia

• Cyclostomata

• Cyclostomata

From the above table find out the missing organ or function- A, B, C, D and E respectively.

• A - swimming; B - comb plates; C - radula; D - excretion; E - defense

• A - defense; B - radula; C - comb plates; D - excretion; E - swimming

• A - defense; B - radula; C - comb plates; D - swimming; E - excretion

• A - protection; B - parapodia; C - visceral mass; D - locomotion; E - excretion

• A - protection; B - parapodia; C - visceral mass; D - locomotion; E - excretion

I. Unicellular Protists found in fresh water

II. Possess a protein-rich outer layer called pellicle

III. Have two flagella

IV. Possess pigments identical to those in higher plants.

These characters apply to genus

• Alternaria

• Nostoc

• Chlorella

• Euglena

• Euglena

Find out the wrong statements

(A) Ulothrix and Spirogyra are filamentous forms

(B) Porphyra and Laminaria are fresh water algae

(C) Stored food is in the form of mannitol in Rhodophycean members

(D) Chlorella and Spirulina are unicellular algae

• (A) and (B)

• (B) and (C)

• (A) and (C)

• (A) and (D)

• (A) and (D)

One of these is not a feature of non-chordates

• Absence of post-anal tail

• Ventrally located central nervous system

• Absence of notochord

• Ventrally located heart

• Ventrally located heart

Identify the phylum from the statements given below

1. Their body is circular in cross section.
2. They may be free living, aquatic and terrestrial or parasitic in plants and animals.
3. They are bilaterally symmetrical, triploblastic and pseudocoelomates.

• Cnidaria

• Aschelminthes

• Annelida

• Arthropoda

• Arthropoda

338.

Match Column I with Column II and Column III. Choose the correct option

Column I	Column II	Column III
1. Cnidocytes	A. Ctenoplana	i. Balancing
2. Statocyst	B. Fasciola	ii. Defense
3. Radula	C. Pennatula	iii. Feeding
4. Flame cells	D. Locusta	iv. Locomotion
5. Comb plates	E. Pila	v. Osmoregulation

• 1-A-ii; 2-A-v; 3-E-iii; 4-C-i; 5-E-iv

• 1-B-iii; 2-A-iv; 3-E-v; 4-C-ii; 5-D-i

• 1-C-ii; 2-D-i; 3-E-iii; 4-B-v; 5-A-iv

• 1-D-i; 2-C-ii; 3-A-v; 4-B-iii; 5-A-v

• 1-D-i; 2-C-ii; 3-A-v; 4-B-iii; 5-A-v

Read the following statements and choose the correct option

(i) Aves are homoiothermous.

(ii) Pinnae are present in mammals.

(iii) Operculum is present in Chondrichthyes.

(iv) Skin of amphibians are dry and horny.

(v) Open type of circulation is found in cyclostomes.

• (i) and (ii) only are wrong

• (ii), (iii) and (iv) only are wrong

• (i), (ii) and (iv) only are wrong

• (iii), (iv) and (v) only are wrong

• (iii), (iv) and (v) only are wrong

Match the following organisms with their respective characteristics :

A. Pila	i. Flame cells
B. Bombyx	ii. Comb plates
C. Pleurobrachia	iii. Radula
D. Taenia	iv. Malpighian tubules

Select the correct option from the following:

• A - iii; B - iv; C - ii; D - i

• A - ii; B - iv; C - iii; D - i

• A - iii; B - ii; C - iv; D - i

• A - iii; B - ii; C - i; D - iv