Which one of the following features is common in silverfish, scorpion, dragonfly and prawn?
(1) Two pairs of legs and segmented body
(2) Living chitinous cuticle and two pairs of antennae
(3) Jointed appendages and chitinous exoskeleton
(4) Closed blood circular system
Which one of the following is correctly matched with its one characteristic and the taxon?
Animals | Characteristic | Taxon | |
1. | Millipede | Ventral nerve cord | Arachnida |
2. | Duckbill platypus | Oviparous | Mammalia |
3. | Silverfish | Pectoral and pelvic fins | Chordata |
4. | Sea anemone | Triploblastic | Cnidaria |
Which of the following does not come under the Class Mammals?
(1) Flying fox
(2) Hedgehog
(3) Manatee
(4) Lamprey
National bird of India is
(1) Psittacula
(2) Passer domesticus
(3) Pavo cristatus
(4) Parakeet
Stinging capsules (nematocysts) are found in
(1) wasp and honeybee
(2) scorpion and cobra
(3) sea pen and sea fan
(4) cactus and Venus flytrap
In which of the following sets of organisms, does the external fertilization occur?
1. Echinodermata and mosses
2. Hemichordata and ferns
3. Amphibians and algae
4. Reptiles and gymnosperms
In the given table, some organisms are classified into categories. However, there is one exception. Select the option with correctly mentioned exceptional organism.
Organisms | Category | Exception | |
1. | Penicillium, Aspergillus, Mucor | Fungi | Mucor |
2. | Cacti, Venus flytrap | Plants | Cacti |
3. | Ascaris, Nereis, Wuchereria | Aschelminthes | Nereis |
4. | Scorpion, Prawn, Anopheles | Arthropoda | Prawn |
Some salient features and phyla of organisms are given below. Select the option which shows the correct combination of organism, its phylum and salient features.
1. Hydra | Coelenterata | Bilateral symmetry | Cnidoblasts present |
2. Planaria | Platyhelminthes | Bilateral symmetry | High regeneration capacity |
3. Ancylostoma | Annelida | Bilateral symmetry | Elongated and worm shape |
4. Octopus | Mollusca | Radial symmetry | External skeleton of shell present |
Select the option that correctly matches characteristic features with the group of three animals.
(1) Skeleton of spicules − Sycon, Adamsia, Spongilla
(2) Excretion by flame − Taenia, Fasciola, Ancylostoma
(3) Mouth contains radula − Dentalium, Octopus, Ophiura
(4) Jointed appendages − Limulus, Apis, Laccifer
Water transport system or canal system is a characteristic feature of which animal?
1. Spongilla
2. Hydra
3. Asterias
4. Echinus