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Get Answers to all your Questions
- #National Eligibility Cum Entrance Test
- #Structural Organisation in Animals and Plants
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Which of the following are present on the head of the cockroach?
Option: 1
Tactile receptors
Option: 2
Fenestra
Option: 3
Walking legs
Option: 4
Fore wings
Answers (1)
Head
- Head lies anteriorly at a right angle to the longitudinal axis of the body.
- Head is triangular in shape
- Head is formed by the fusion of six segments
- It is attached to a flexible neck which allows movement in all directions.
- Head bears a pair of thread-like antennae, a pair of compound eyes and a pair of fenestra or photoreceptors.
- Antennae arise from membranous sockets lying in front of eyes.
- Antennae have sensory receptors that help in monitoring the environment
- The anterior end of the head bears appendages forming biting and chewing type of mouthparts.
-
Head bears a pair of thread-like antennae, a pair of compound eyes and a pair of fenestra or photoreceptors.
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