Download Vertebrates and Invertebrates

1st Invertebrate: Jellyfish
• Jellyfish can reproduce both sexually and asexually.
The embryo is attached to the tentacles until they
are ready to drop off. Parents take care of their
embryos and young's by getting them into their
mouths and covering them in a layer of brood
chambers to keep them protected.
2nd Invertebrate: Squid
• Squid mostly reproduce sexually by using an ink sac
(females), and a penis (male). The embryos are
spermatophores and during the mating they go into
the female’s mantle. The squid embryos are left
behind when born and so they depend on their own
and where the current takes them.
1st Vertebrate: Whale
• Since Whales are mammals, they give live birth, and
produce usually one calve. They reproduce sexually
and release the most sperm among animals. The
embryo is stored in the belly until born. When born
the baby learns everything from her mother and are
always next to each other. Parents and child separate
usually at the age of 10 or so since whales usually
live to an average of 77 years. They are really similar
to humans in this way.
2nd Vertebrate: Snow Leopard
• Snow leopards are mammals and they reproduce
sexually just like humans. They usually mate in late
winter and give birth to 2 cubs but five is also
possible. They keep the embryo in the stomach and
after birth the babies are blind for 4 more weeks.
They stay with their mother for 18-22 months so way
shorter than whales or humans.
3rd Vertebrate: Kangaroo
• Kangaroos reproduce sexually, and even
thought they are so big their babies are the
smallest ones among animals. One baby is
approximately 1cm long, as big as your finger
nail! They develop in the pouch from which it
once leaves can never come back. They
usually separate from parents after about 200
days.
THE END
• All the animals produce either sexually or
asexually. But the way their babies are born
and the time they need to leave parents is
different. The size difference is straight on
astonishing between a whale and a kangaroo.
• By Csanad Horvath