The first nuclear transplant from an animal to an egg that produced a normal adult was performed on a
(1) frog
(2) sheep
(3) cat
(4) dog
(1) frog
Which of the following statements are true for the phylum-Chordata?
| (a) | In Urochordata, notochord extends from head to tail and is present throughout their life |
| (b) | In Vertebrata, notochord is present during the embryonic period only |
| (c) | Central nervous system is dorsal and hollow |
| (d) | Chordata is divided into 3 sub-phyla : Hemichordata, Tunicata and Cephalochordata |
1. (c) and (a)
2. (a) and (b)
3. (b) and (c)
4. (d) and (c)
Bilaterally symmetrical and acoelomate animals are exemplified by:
1. Platyhelminthes
2. Aschelminthes
3. Annelida
4. Ctenophora
Match the following diseases with the causative organism and select the correct option:
| Column I | Column II | ||
| (a) | Gregarious, polyphagous pest | (i) | Asterias |
| (b) | Adult with radial symmetry and larva with bilateral symmetry | (ii) | Scorpion |
| (c) | Book lungs | (iii) | Ctenoplana |
| (d) | Bioluminescence | (iv) | Locusta |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (ii) | (iii) |
| 2. | (iii) | (ii) | (i) | (iv) |
| 3. | (ii) | (i) | (iii) | (iv) |
| 4. | (i) | (iii) | (ii) | (iv) |
Match the following columns and select the correct option.
| Column I | Column II | ||
| (a) | 6 - 15 pairs of gill slits | (i) | Trygon |
| (b) | Heterocercal caudal fin | (ii) | Cyclostomes |
| (c) | Air Bladder | (iii) | Chondrichthyes |
| (d) | Poison sting | (iv) | Osteichthyes |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (iv) | (i) | (ii) |
| 2. | (iv) | (ii) | (iii) | (i) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (ii) | (iii) | (iv) | (i) |
False statement with respect to Ascidia is
1. Present exclusively in marine water
2. It is a urochordate and notochord is present only in larval tail
3. It is a vertebrate because it has a notochord
4. It is a protochordate
Read the given features
(a) Presence of cnidoblasts
(b) Alternation of generation
(c) Extracellular and intracellular digestion
All of the above given features are observed in
1. Hydra
2. Physalia
3. Aurelia
4. Adamsia
Which of the following is a correct match with respect to members listed and corresponding taxon?
1. Earthworm, silkworm, hookworm – Annelida
2. Sea hare, sea lily, sea urchin – Echinodermata
3. Cuttle fish, devil fish, apple snail – Mollusca
4. Sea horse, flying fish, dog fish – Chondrichthyes
Which of the following is not correct comparison between Locusta (A) and Prawn (B), illustrated in the following diagram?
| Character | Locusta (A) | prawn (B) |
1. | Body Segmentation and abdomen | Head, Thorax and Abdomen | Cephalothorax |
2. | Excretory organs | Malpighian tubules | Green glands |
3. | Respiratory organ | Trachea | Gills |
4. | Eye | Compound | Simple |
1. 1
2. 2
3. 3
4. 4
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