Question

Questions 136 through 138 refer to the following: D) hypothalamus B assformoon ber __136) 137) vino Structure E represents a developing A) bird c) insect B) marsupial D) frog ro Which structure contains stored food? A) A B) D C) F Which structure contains fluid that cushions the embryo and provides a watery environment for its development? On RF C B D A e D B 138) An

Answer 1

Reptile and Bird (chorion for go hange) to amnion exchange) Developing embryo allantois for collection of • Nitrogenous waste yolk sac. for providing nourishment . amnion for protection, prevention of sessication . Chonion, Allantois & yolk eac are the extra embryonic membranes. •

Bird ( A) as reptile is not in the option.

The yolk sac provides all the nutrients the embryo needs and produces blood cells until the placenta fully forms later in the pregnancy. Toward the end of the first trimester, the yolk sac shrinks and can no longer be seen on the sonogram. (F)

Amniotic fluid region between D and E. ( Or we can say E)