Structural organisation in animals practice · Medium

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Analyzing +4 | -1

How many of the given statements are true?

1) In a cockroach, the brain is represented by a supra-oesophageal ganglion that supplies nerves to the maxillary and labial palps
2) The compound eyes are situated at the ventral surface of the head

3) Each compound eye consists of 200 hexagonal ommatidia

4) Female is consisting of anal style

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Correct option: A

Option A (1) is correct because only one statement is true: the brain is represented by a supra-oesophageal ganglion.

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Understanding +4 | -1

Assertion (A): In tendon, the orientation of fibres show an irregular pattern.
Reason (R): Tendon has fibroblasts and many fibres that are oriented differently.

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Correct option: D

Both “A” and “R” are false.

Option D (Both “A” and “R” are false) is correct because in tendons, the fibers are arranged in a regular, parallel pattern, and the reason incorrectly states that tendons have fibers oriented differently.

Revision notes and key takeaways

Review STRUCTURAL ORGANISATION IN ANIMALS in your textbook or class notes, then use this set to check your understanding.

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