Write the function of each one of the following:

(a) (Oviducal) Fimbriae

(b) Coleoptile

The following is the illustration of the sequence of ovarian events (a to i) in a human female.

i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.

(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.

(iii) Explain the changes that occur in the uterus simultaneously in anticipation.

(iv) Write the difference between c and h.

(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.

How does the megaspore mother cell develop into 7-celled, 8 nucleate embryo sac in an angiosperm? Draw a labeled diagram of a mature embryo sac.

(a) Draw a labelled diagram of the human female reproductive system. 

(b) Enumerate the events in the ovary of a human female during: 

(i) Follicular phase

(ii) Luteal phase of menstrual cycle

(a) Write the specific location and the functions of the following cells in human males:

(i) Leydig cells

(ii) Sertoli cells

(iii) Primary spermatocyte

(b) Explain the role of any two accessory glands in human male reproductive system.

Why are the human testes located outside the abdominal cavity? Name the pouch in which they are present.

(a) Where does fertilization occur in human ? Explain the events that occur during this process.

119.

How is the entry of only one sperm and not many ensured into an ovum during fertilisation in humans? 

Where is acrosome present in humans? Write its function.