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Structural Organisation In Animals

One Word Answers

1. Answer in one word or one line.

(i) Give the common name of Periplanata americana.

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2. Answer in one word or one line.

(ii) How many spermathecae are found in earthworm?

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3. Answer in one word or one line.

(iii) What is the position of ovaries in cockroach?

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Answer in one word or one line.

(iv) How many segments are present in the abdomen of cockroach?

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Answer in one word or one line.

(v) Where do you find Malpighian tubules?

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Short Answer Type

Answer the following

(i) What is the function of nephridia?

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7. Answer the following:

(ii) How many types of nephridia are found in earthworm based on their location?

On the basis of their location, the nephridia are divided into three The three types of nephridia are

(a) Septal nephridia: These are present on both sides of the intersegmental septa of the 15th segment to the last that open into the intestine.

(b) Integumentary nephridia: These lie attached to the lining of the body wall of the 3rd segment to the last segment, which opens on the body surface.

(c) Pharyngeal nephridia: These are present as three paired tufts in 4th, 5th, and 6th segments.

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