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About how many times does the nymph of P...

About how many times does the nymph of Periplaneta americana undergo moulting before becoming an adult ?

A

4

B

2

C

17

D

13

Text Solution

Verified by Experts

The correct Answer is:
D
Immediately after hatching, the nymphs undergo 13 successive moults. As nymphal development proceeds, the wing pads arise, body increases in size, colouration becomes darker and ultimately the adult takes its form with fully developed wings and genitalia.
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Answer in one word or one line. (i) Give the common name of Periplaneta americana. (ii) How many spermathecae are found in earthworm? (iii) What is the position of ovaries in the cockroach? (iv) How many segments are present in the abdomen of cockroach? (v) Where do you find malphigian tubules?

Answer in one word or one line (i) Give the common name of Periplaneta americana. (ii) How many spermathecae are found in cockroach ? (iii) What is the position of ovaries in cockroach ? (iv) How many segments are present in the abdomen of cockroach ? (v) Where do you find Malpighian tubules ?

NCERT FINGERTIPS-STRUCTURAL ORGANISATION IN ANIMALS-Structural Organisation In Animals
  1. In cockroach, the ootheca is formed by the secretion of

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  2. The development of Periplaneta americana is

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  3. About how many times does the nymph of Periplaneta americana undergo m...

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  4. Consider the following four statements (i) - (iv) and select the corre...

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  5. Which of the following statements is incorrect about the frog ? (i) ...

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  6. The figure given here shows diagrammatic representation of internal or...

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  7. In a frog, if a hole is punched in the floor of its buccal cavity, the...

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  8. Read the following statement (P - T) and select the option that correc...

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  9. Which of the following statements is correct about the respiration in ...

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  10. Fill up the blanks in the following paragraph by selecting the correct...

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  11. Identify the incorrect statement about frog.

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  12. The hind brain in frog consists of

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  13. In frog, mesorchium is a thin fold of of membrane extending between

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  14. Following are given four statements (i)- (iv) related to frog. Read th...

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  15. Cloaca is a small, median chamber that is used to pass

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  16. The figure given here is related with female reproductive system of fr...

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  17. Read the statements regarding frog. Which of the statements is/are cor...

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  18. Where is jelly deposited as a covering on the egg of frog?

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  19. Refer to the given figures showing two types of glands Which of t...

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  20. Read of following statements regarding different types of animal tissu...

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