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During which stage in embryonic developm...

During which stage in embryonic development , primary germ layers appear for the first time ?

A

Zygote

B

Morula

C

Blastula

D

Gastrula

Text Solution

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The correct Answer is:
D
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ARIHANT NEET-ANIMALIA -I (LOWER INVERTEBRATES)-CHAPTER EXERCISES (Taking it together) Assorted Questions of the Chapter for Advanced Level Practise
  1. In which of the following symmetry , the response to external stimulus...

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  2. Which of the body plan is found in nematodes ?

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  3. During which stage in embryonic development , primary germ layers appe...

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  4. Subcellular physiological division of labour occurs in

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  5. Coelom is cavity found between

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  6. The coelom not lined by mesoderm and directly connected to the archent...

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  7. The evolution of an internal body cavity was in important improvement ...

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  8. Body cavity is the cavity present between body wall and gut wall. In s...

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  9. Development of mesoderm in the form of muscles in body wall, leaving a...

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  10. The animals in which coelom originates as a space in the mesoderm are ...

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  11. Protostomes are

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  12. A large cavity with blood called hoemocoel is found in

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  13. Platyhelminthes , annelids , arthropods and molluscans are

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  14. In some animal groups,t he body is found divided into compartments wit...

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  15. Temperature changes in the environment affect most of the animals whic...

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  16. Modern representatives of an anicient link between the echinoderms and...

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  17. Animals which have well marked digestive cavity are put under

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  18. Who described the animals nature of Porifera ?

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  19. Sponges form a sideline of evolution hence called

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  20. Sponges are porifers because their bodies have

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