Question

Give importance of phylum arthropoda

Answer 1

Answer:

The phylum Arthropoda (Arthro- jointed; Podos-feet) contains the animals that have jointed appendages. They have the following characteristics: 1. It is the largest phylum of the animal kingdom. 2. These are bilaterally symmetrical, triploblastic and coelomate animals. 3. They have organ system level of organization. 4. Their body is covered with chitinous exoskeleton. 5. The body can be divided into head, thorax and abdomen. 6. They have open circulatory system. 7. They possess haemolymph. 8. Most of the arthropods have compound eyes. Examples: Apis (honeybee), Bombyx (silkworm), King carb, cockroach, Anopheles (mosquito) etc.

Answer 2

Phylum Arthropoda :-

• Arthropoda is the largest phylum which includes prawns, shrimps, insects, spiders and scorpions.

• They are found everywhere.

• They have jointed legs.

• They have organ system level of organisation .

• They are bilaterally symmetrical, triploblastic, segmented and coelomate.

• The body is covered by exoskeleton.

• The body consists of head, thorax and abdomen.

• Respiratory organs :- Gills, book gills, book lungs, trachea. Open circulatory system.

• Sense organs like eyes. antennae and balancing organs like statocysts are present.

• Excretion takes place through Malpighian tubules.

• They are dioecious.

• Internal fertilisation.

• They are mostly oviparous.