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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?
Distinguish between intracellular and extracellular digestion.
What is the difference between direct and indirect development?
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 |
The following characteristics are essential for classification.
The symmetry exhibited in cnidarians is ______.
Which of the following animals has a true coelom?
In Pheretima locomotion occurs with the help of ______.
Which of the following is a crustacean?
Lateral line sense organs occur in ______.
Identify the structure that the archenteron becomes in a developing animal.
Choose the term that does not belong in the following group and explain why it does not belong?
Notochord, cephalisation, dorsal nerve cord and radial symmetry.
In which of the following the notochord is present only in embryonic stages?
In some animal groups, the body is found divided into compartments with serial repitition of at least some organs. This characteristic feature is called ______.
Differentiate between a diploblastic and a triploblastic animal.
Complete the paragraph using proper words:
(Asymmetrical, Paramecium, Equal, imaginary, central, insects, rats, bird, three, unequal)
If body of any animal is cut through ______ axis of body, it may or may not produce two equal halves. Depending upon this property, there are different types of animal bodies. In the case of ______ body, there is no any such imaginary axis of the body through which we can get two equal halves. For example Amoeba, ______ some sponges. In radial symmetry type of body, if imaginary cut passes through central axis but any plane of body, it gives two ______ halves. For example Starfish. In case of this animal, there are five different planes passing through ______ axis of body through which we can get two equal halves. In Bilateral symmetry type of body, there is only one such imaginary axis of body through which we can get two equal halves. For example: ______ fishes, frog, birds, human, etc.
Animal with bilateral symmetry in ______.
