Animal Kingdom
Which of the following features is not present in the Phylum-Arthropoda?
What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?
The phylum Arthropoda consists of more than 75% of the animal species found on this earth. The reasons for the success of arthropods are as follows :
i. Jointed legs that allow more mobility on land.
ii. Hard exoskeleton made of chitin that protects the body.
iii. The hard exoskeleton also reduces water loss from the body of arthropods making them more adapted to terrestrial conditions.
Which of the following features is not present in the Phylum-Arthropoda?
Which of the following features is not present in Periplaneta americana?
Match the following columns 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
Which of the following characteristics is mainly responsible for diversification of insects on land?
The chitinous exoskeleton of arthropods is formed by the polymerisations of
Segmentation in the body is first observed in which of the following: (a) Platyhelminthes (b) Aschelminthes (c) Annelida (d) Arthropoda
Bilateral symmetry, segmentation, coelom and open circulatory system characterises which of the following Phyla?
You have discovered an animal having characters like, triploblastic, bilateral symmetry, coelomate, chitinous exoskeleton, head, thorax and abdomen as body parts, and Jointed appendages. You should place the animal under
Which of the following statements are incorrect? (i) Parapodia are lateral appendages in arthropods used for swimming. (ii) RaduIa in molluscs are structures involved in excretion. (iii) Aschelminthes are dioecious. (iv) Echinoderm adults show radial symmetry. (v) Ctenophorans are diploblastic.
Which one of the following groups of three animals is correctly matched with their one characteristic morphological feature? Animals Morphological features (a) Scorpion, spider, cockroach - Ventral solid central nervous system (b) Cockroach, locust, Taenia - Metameric segmentation (c) Liver fluke, sea anemone, sea cucumber - Bilateral symmetry (d) Centipede, prawn, sea urchin - Jointed appendages