Q. No.In which one of the following sets of animals, all the four, give birth to young ones?
1.
Kangaroo, hedgehog, dolphin, loris
2.
Lion, bat, whale, ostrich
3.
Platypus, penguin, bat, hippopotamus
4.
Shrew, bat, cat, kiwi
What is true about Nereis, scorpion, cockroach and silver fish ?
1. They all possess dorsal heart
2. None of them is aquatic
3. They all belong to the same phylum
4. They all have jointed paired appendages
Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic
skeleton. It is due to
1. Gut peristalsis
2. Setae
3. Coelomic fluid
4. Blood
Which one of the following is not a characteristic of phylum Annelida?
1. Pseudocoelom
2. Ventral nerve cord
3. Closed circulatory system
4. Segmentation
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Which one of the following pairs of items correctly belong to the category of organs mentioned against it?
1. Nephridia of earthworm and malpighian tubules of cockroach - excretory organs.
2. Wings of honey bee and wings of crow - homologous organs
3. Thorns of Bougainvilea and tendrils of Cucurbita - analogous organs
4. Nictitating membrane and blind spot in human eye - vestigial organs
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Which one of the following phyla is correctly matched with its two general characteristics?
1. Echinodermata - pentamerous radial symmetry and mostly internal fertilization
2. Mollusca - normally oviparous and development through a trochophore or veliger larva
3. Arthropoda - body divided into head, thorax and abdomen and respiration by mouth
4. Chordata - notochord at some stage, separate anal and urinary openings to the outside
Which one of the following groups of animals is bilaterally symmetrical and triploblastic?
1. Sponges
2. Coelenterates (cnidarians)
3. Aschelminthes (round worms)
4. Ctenophores
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One example of animals having a single opening to the outside that serves both as mouth as well as anus is–
1. Asterias
2. Ascidia
3. Fasciola
4. Octopus
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Which one of the following kinds of animals are triploblastic ?
1. Sponges
2. Ctenophores
3. Corals
4. Flat worms
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Which one of the following statements about certain given animals is correct?
1. Molluscs are acoelomates
2. Insects are pseudocoelomoates
3. Flatworms (Platyhelminthes) are coelomates
4. Roundworms (Aschelminthes) are pseudocoelomates
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