Q. No.In which of the following animals, the body is cylindrical and is composed of an anterior proboscis, a collar and a long trunk?
1.
Hemichordates
2.
Urochordates
3.
Cephalochordates
4.
Vertebrate chordates
Perhaps the biggest reason for the enormous success of Arthropods is?
| 1. | Chitinous exoskeleton | 2. | Diverse appendages |
| 3. | Respiration by tracheoles | 4. | Internal fertilization |
Which of the following is not an Arthropod characteristic?
| 1. | Jointed appendages | 2. | Periodic molting |
| 3. | Closed circulation | 4. | Articulated exoskeleton |
Insects are not characterized by:
1. The main body segments – head, thorax and abdomen
2. Three pairs of legs
3. Two pairs of antennae
4. Excretion by Malpighian tubules
Flame cells are excretory structures seen in:
| 1. | Platyhelminthes | 2. | Annelids |
| 3. | Arthropods | 4. | Cnidarians |
Development takes place through a trochophore or veliger larva in:
1. Annelida
2. Mollusca
3. Arthropoda
4. Echinodermata
In chordates, the tail is:
| 1. | Post anal and segmented |
| 2. | Post anal and unsegmented |
| 3. | Pre anal and segmented |
| 4. | Pre anal and unsegmented |
The most important reason for the fact that reptiles were the first animals to be successful on land is:
| 1. | Internal fertilization |
| 2. | Skin covered with scales |
| 3. | Partially divided ventricles |
| 4. | Presence of amnion |
Euplectella [Venus Flower Basket], shown in the figure below, belongs to:
| 1. | Porifera | 2. | Cnidaria |
| 3. | Ctenophora | 4. | Platyhelminthes |
Pinworm, Hookworm, and Filaria worm belong to:
| 1. | Annelida | 2. | Platyhelminthes |
| 3. | Aschelminthes | 4. | Arthropoda |
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