The similarity between Ascaris lumbricoides and Anopheles stephensi is:
1. Sexual dimorphism
2. Metamerism
3. Anaerobic respiration
4. Endoparasitism
In which of the following, the notochord is present in the embryonic stage?
1. | All chordates | 2. | Some chordates |
3. | Vertebrates | 4. | Non-chordates |
In which animal nerve cell is present but the brain is absent:
1. Sponge
2. Earthworm
3. Cockroach
4. Hydra
Which of the following animals have scattered cells with cell–tissue grade organization:
1. Sponge
2. Hydra
3. Liver fluke
4. Ascaris
Given below are four matchings of an animal and its kind of respiratory organ:
A. | Silverfish – trachea |
B. | Scorpion – book lung |
C. | Sea squirt – pharyngeal gills |
D. | Dolphin – skin |
The correct matchings are:
1. A and D
2. A, B, and C
3. B and D
4. C and D
Which one of the following is a matching pair of an animal and a certain phenomenon it exhibits:
1. Pheretima – Sexual dimorphism
2. Musca – Complete metamorphosis
3. Chameleon – Mimicry
4. Taenia – Polymorphism
During its life cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stage respectively:
1. Redia and miracidium
2. Cercaria and redia
3. Metacercaria and cercaria
4. Miracidium and metacercaria
Sycon belongs to a group of animals, which are best described as:
1. | Unicellular or acellular |
2. | Multicellular without any tissue organization |
3. | Multicellular with a gastrovascular system |
4. | Multicellular having tissue organization, but no body cavity |
In Hydra, waste material of food digestion and nitrogenous waste material are removed from:
1. Mouth and mouth
2. Body wall and body wall
3. Mouth and body wall
4. Mouth and tentacles
In which of the following animal post-anal tail is found:
1. Earthworm
2. Lower invertebrate
3. Scorpion
4. Snake