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प्रश्न
Give an account on phylum Arthropoda.
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उत्तर
- Arthropoda is the largest phylum.
- The organisms have jointed legs.
- The body is segmented into head, thorax and abdomen.
- The exoskeleton is made up of chitin.
- The coelomic cavity is filled with haemolymph (blood).
- They do not have defined blood vessels. This is called open circulatory system.
- The insects shed the exoskeleton and this process is called moulting.
- Small Arthropods absorb oxygen through the body and larger aquatic species breathe through book gills.
- Land Arthropods breathe through a system of tiny body tubes called tracheae.
- Excretion occurs through malphigian tubules and through green glands in crabs and prawns. .
- Insects, spiders, crabs, shrimps, butterflies, millipedes, centipedes, and scorpions are some arthropods.
APPEARS IN
संबंधित प्रश्न
Observe the following diagram. Write the answers of the following questions.
- To which phylum does the animal included in the diagram belong?
- What is the exoskeleton made up?
- What is the symmetry?
Find an odd one out.
Answer the questions based on the given paragraph.
Lady Bug Beetle
Lady bug beetles are friends of farmers as they destroy harmful insects. It is a predatory insect, which lives on biting worm, white fly worm, white moth, flower insects and bread worms. It acts as a natural insecticide for crops like maize, jawar, cotton, sugarcane, cereals, vegetables, fruit trees, etc. These are attractive red or yellow or grey coloured insects. Many species of this insect are found in our farms. The lifecycle of this insect follows eggs, larvae, cocoon and moth stages. The eggs are found in flutter. The larvae are grey in colour. Larvae and adults both live on sucking insects.
- How does the lady bug beetle live?
- Of which colour the lady bug beetles are?
- State the stages of its lifecycle.
- How does it help the farmers?
In which group of animals, coelom is filled with blood?
______ is the largest phylum of the animal kingdom.
Which of the following belongs to the same phylum?
Excretory organs of arthropods are ______.
Give an example of the following:
An oviparous mammal
Identify my class/phylum and give one example of it:
We form the highest number of animals on the planet. We have bilateral symmetry and our exoskeleton is in the form of chitin.
Which of the following animal is matched with the wrong excretory organ?
