Answer:
It is called pen and it is located at the dorsal side
Explanation:
Squid belongs to the class Cephalopoda, subclass Coleoidea which is characterized by internal shell (unlike subclass Nautiloidea in which shell is located externally).
The shell of the squid (the pen) in very reduced and small, formed from chitin and located at the dorsal side. The pen provides attachment for muscles and it gives the squid stiffness.
Most likely, this internal shell evolved from the external shell, because it is believed the ancestral of the organisms from the Coleoidea was probably nautiloid-like.
Answer:
ALS causes the motor neurons to gradually deteriorate, and then die. Motor neurons extend from the brain to the spinal cord to muscles throughout the body.
The terms that complete the sentence 'The __________ and __________ are the glands that stimulate reproductive cycles' are b. testes . . . ovaries. Testes are male gonads and ovaries are female gonads in animals. These organs are glands that are involved in reproductive cycles. They produce gametes which take place in reproduction, but they also produce hormones that stimulate reproductive cycles.
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Meiosis<span> and </span>mitosis<span> are both preceded by one round of DNA replication; however, </span>meiosis<span> includes two nuclear divisions. The four daughter cells resulting from </span>meiosis<span>are haploid and genetically distinct. The daughter cells resulting from </span>mitosis<span> are diploid and identical to the parent cell.</span>
Explanation:
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