Practice free Structural Organisation in Animals (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which of the following statements is INCORRECT regarding the male reproductive system of a frog?
Vasa efferentia are 10-12 in number that arise from testes, not kidneys. They enter the kidneys on their side and open into Bidder’s canal.
In male frogs, the urinogenital duct directly communicates with which of the following structures to release both urine and sperms?
The urinogenital duct that comes out of the kidneys opens into the cloaca. The cloaca is a small, median chamber that is used to pass faecal matter, urine and sperms to the exterior.
What is the typical number of ova a mature female frog can lay at one time?
A mature female can lay 2500 to 3000 ova at a time.
Fertilisation in frogs is described as external. Where does this process typically take place?
Fertilisation is external and takes place in water.
Which of the following structures connect the testes to the kidneys in a male frog?
Male reproductive organs consist of a pair of yellowish ovoid testes, which are found adhered to the upper part of kidneys by a double fold of peritoneum called mesorchium.
Regarding the female reproductive system of a frog, which statement is correct?
The ovaries are situated near kidneys and there is no functional connection with kidneys. A pair of oviduct arising from the ovaries opens into the cloaca separately.
The cloaca in frogs serves as a common chamber for the passage of all the following EXCEPT:
The cloaca is a small, median chamber that is used to pass faecal matter, urine and sperms to the exterior. Bile is secreted by the liver.
What is the larval stage in the life cycle of a frog called?
Development involves a larval stage called tadpole. Tadpole undergoes metamorphosis to form the adult.
In male frogs, the ureters also function as:
Two ureters emerge from the kidneys in the male frogs. The ureters act as urinogenital duct which opens into the cloaca.
The 'Bidder's canal' in male frogs plays a role in:
Vasa efferentia enter the kidneys on their side and open into Bidder’s canal. Finally it communicates with the urinogenital duct.
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