Match the following.

Egg capsule

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Development of eggs

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Nymphal stage

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Storage of sperm

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Solution

Spermatheca is a receptacle in the reproductive tract which stores sperm in female cockroach during copulation.
The ootheca of cockroaches is made by secretions from two colleterial glands. It is a capsule which encases fertilised eggs.
Some cockroach species drop the egg case, while other species carry it until the eggs are ready to hatch. In still others, the ootheca is retracted into the body and protected in a brood pouch for further development.
Paurometabolous development refers to the type of development through nymphal stage.

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Similar questions

Match the descriptions with the following images.

A.B.

C. D.

i. Egg and the sperm are injected into the fallopian tubes.

ii. The embryo is transferred to the uterus.

iii. The sperm is directly inserted into the egg and then implanted in the uterus.

iv. Sperms are injected into the uterus.

The sperm and the egg make different contributions to zygote. Which of the following statements about their contributions are true?

(i) Sperm contributes most of the mitochondria.

(ii) Egg contributes most of the cytoplasm.

(iii) Both sperm and egg contribute haploid nucleus

(iv) Both sperm and egg contribute centrioles.

How do the sperms penetrate the egg through the defence barrier of the egg?

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