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प्रश्न
What are flame cells?
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उत्तर
Flame cells are the specialized excretory cells in flat worms. They help in excretion and osmoregulation.
संबंधित प्रश्न
If you are given a specimen, what are the steps that you would follow to classify it?
What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?
What is the exact difference between grades of organization and symmetry? Explain with examples.
Complete the following chart.
| Body cavity | Germ Layer | Phylum |
| Absent | .......... | Porifera |
| Absent | Triploblastic | .......... |
| Pseudocoelom | .......... | Aschelminthes |
| Present | .......... | Arthropoda |
Label the body organization of human in the following figure:

The largest division of the living world is ______.
Which of the following animals has a true coelom?
In Pheretima locomotion occurs with the help of ______.
Lateral line sense organs occur in ______.
Match the following columns and select the correct option.
| Column – I | Column – II | ||
| (p) | Pila | (i) | Devil fish |
| (q) | Dentalium | (ii) | Chiton |
| (r) | Chaetopleura | (iii) | Apple snail |
| (s) | Octopus | (iv) | Tusk shell |
Identify the structure that the archenteron becomes in a developing animal.
______ is a fluid-filled body cavity.
Which organism is called Friends of farmers? Why?
Examine the figures of diploblastic (i) and triploblastic (ii) organization in animals given below and identify the labelled parts A to D.

Identify the phylum in which adults exhibit radial symmetry and larva exhibit bilateral symmetry.
Provide appropriate technical term in the space provided.
Blood-filled cavity in arthropods ______.
Differentiate between open circulatory system and closed circulatory system
What is the relationship between germinal layers and the formation of body cavity in case of coelomate, acoelomates and pseudocoelomates?
