Exoskeleton is absent in:
(i) fishes (ii) frog
(iii) rabbit (iv) toad
(1) (i), (ii) (2) (ii), (iii)
(3) (i), (iii) (4) (ii), (iv)
Which of the following worm infection is unlikely to result in the inflammation of the intestinal tract?
1. tapeworm
2. threadworm
3. pin worm
4. filarial worm
Match the following genera with their respective phylum :
Column I | Column II | ||
(a) | Ophiura | (i) | Mollusca |
(b) | Physalia | (ii) | Platyhelminthes |
(c) | Pinctada | (iii) | Echinodermata |
(d) | Planaria | (iv) | Coelenterata |
Options: | (a) | (b) | (c) | (d) |
1. | iv | i | iii | ii |
2. | iii | iv | i | ii |
3. | i | iii | iv | ii |
4. | iii | iv | ii | i |
Which of the following animals are true coelomates with bilateral symmetry ?
1. Adult Echinoderms
2. Aschelminthes
3. Platyhelminthes
4. Annelids
Which of the following is incorrect for the given diagram?
1. Dioecious
2. External fertilisation
3. Indirect development
4. Saccoglossus
Which of the following is not true for the given diagram?
1. Worm like animals
2. Closed circulatory system
3. Respiration through gills
4. Excretion through proboscis gland
Which of the following is the distinctive feature of Hemichordata?
1. Worm like animals
2. Body is composed of Proboscis, Collar and Trunk
3. Notochord present
4. Both A and B
Which is incorrect for Hemichordata?
1. Cylindrical body
2. Proboscis, Collar and Trunk present
3. Bilaterally symmetrical
4. Head, Collar and Trunk present
Which of the following is true for Hemichordata?
1. Earlier placed under phylum of Chordata
2. Now placed under Non- Chordata
3. Notochord is absent
4. All of these
Which of the following is incorrect about Echinoderms?
1. Free swimming larva present
2. Indirect development
3. Excretory system is absent
4. Incomplete digestive system