Q22 of 30 Page 1

(a) Write the function of the following:- (Oviducal) Fimbriae

(b) Write the function of the following:- Coleoptile


(c) Write the function of the following:- Oxytocin


(a) The function of oviducal fimbriae is that it collects the ovum after it is released from the ovary into the fallopian tube.

(b) Function of the Coleoptile is that the terminal pore that is has, helps in the emergence of first leaf. It also protects the plumule during emergence from the soil.


(c) The function of oxytocin is that it acts as a chemical messenger or neurotransmitter, controlling childbirth and lactation, etc. It is secreted by the pituitary gland.


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State the theory of Biogenesis. How does Miller’s experiment support this theory?

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(a) Name the two different categories of microbes naturally occurring in sewage water.

(b) Explain the role of microbes in cleaning sewage water into usable water.


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Name the genes responsible for making Bt cotton plants resistant to bollworm attack. How do such plants attain resistance against bollworm attacks? Explain.

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Study a part of the life cycle of malarial parasite given below. Answer the questions that follow:


(a) Mention the roles of ‘A’ in the life cycle of the malarial parasite.


(b) Name the event ‘C’ and the organ where this event occurs.


(c) Identify the organ ‘B’ and name the cells being released from it.