Practice free Zoology NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
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.
Which of the following distinguishes male frogs from female frogs externally?
Male frogs can be distinguished by the presence of sound producing vocal sacs and also a copulatory pad on the first digit of the fore limbs which are absent in female frogs.
Which of the following organs in female frogs opens separately into the cloaca?
A pair of oviduct arising from the ovaries opens into the cloaca separately. In females the ureters and oviduct open seperately in the cloaca.
The process by which a tadpole transforms into an adult frog is known as:
Tadpole undergoes metamorphosis to form the adult.
Where are the testes located 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.
Which of the following is NOT part of the female reproductive organs of a frog?
The female reproductive organs include a pair of ovaries (Figure 7.4). A pair of oviduct arising from the ovaries opens into the cloaca separately. Vasa efferentia are part of the male reproductive system.
Which of the following age ranges is generally considered the adolescence period, characterized by significant biological and behavioral changes?
According to the NCERT text, 'The period between 12-18 years of age may be thought of as adolescence period.' Adolescence is a bridge linking childhood and adulthood, accompanied by several biological and behavioral changes, making it a vulnerable phase.
All of the following are common motivators for youngsters towards drug and alcohol use EXCEPT:
The NCERT text states: 'Curiosity, need for adventure and excitement, and experimentation, constitute common causes, which motivate youngsters towards drug and alcohol use.' Strong spiritual beliefs are not mentioned as a motivator for drug and alcohol use; in fact, they might act as a deterrent.
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