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प्रश्न
Observe the animal below and answer the following questions.
- Identify the animal.
- What type of symmetry does this animal exhibit?
- Is this animal Cephalized?
- How many germ layers does this animal have?
- How many openings does this animal’s digestive system have?
- Does this animal have neurons?
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उत्तर
- Sea anemone (Adarnasia)
- Radial symmetry
- No
- Two (ectoderm and endoderm)
- One
- No.
संबंधित प्रश्न
Write in brief about progressive changes in animal classification.
What is the exact difference between grades of organization and symmetry? Explain with examples.
Label the body organization of human in the following figure:
Draw a neat and labelled diagram.
Jellyfish
The following characteristics are essential for classification.
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.
What are flame cells?
______ was a greek philosopher who classified animals.
Which organism is called Friends of farmers? Why?
In which of the following the notochord is present only in embryonic stages?
Provide appropriate technical term in the space provided.
Blood-filled cavity in arthropods ______.
Differentiate between open circulatory system and closed circulatory system
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 ______.
