Choose the correct alternative:

i) The visceral skeleton is also referred to as (chondrocranium/ splanchocranium).

ii) Jaws arose from the (mandibular/hyoid) arch.

iii) The upper jaw is made up of the (palatoquadrate/Meckel’s cartilage).

iv) Branchial basket formed of the visceral arches is found in (teleosts/cyclostomes).

v) If the jaw is attached to the skull and not suspended by the hyomandibula, the suspensorium is (autodiastylic/autostylic)

Describe specialised sensory organs of vertebrates and relate their role to their habita

How would you define a ligand in cell-to cell signalling

Aldosterone

Progesterone 

Discuss the process of development of extra embryonic membranes in chick

Fill in the blanks:

i) The four types of mammalian uteri are ………………….., ………………………., …………….. and ……………………. .

ii) The muscle layer of the uterus is called ………………………….

iii) The sequence of organs of mammalian female genital system are: two ovaries …………..……… …………..…… ……………… …………….. .

iv) In female birds only the …………………… gonad develops into the