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The above figure is associated with diagrammatic representation of internal organs of frog. Identify A to E:
\(
\begin{array}{|c|c|c|c|c|c|}
\hline
\ & A & B & C & D & E \\ \hline
1 & \text{Gall bladder} & \text{Lung} & \text{Ovary} & \text{Testis} & \text{Rectum} \\ \hline
2 & \text{Gall bladder} & \text{Lung} & \text{Fat bodies} & \text{Testis} & \text{Rectum} \\ \hline
3 & \text{Gall bladder} & \text{Lung} & \text{Testis} & \text{Kidney} & \text{Rectum} \\ \hline
4 & \text{Gall bladder} & \text{Lung} & \text{Fat bodies} & \text{Kidney} & \text{Rectum} \\ \hline
\end{array}
\)
(d)
Bull frog of India is:-
(a)
Frogs belonging to class _____ of phylum chordata are _____ animals and show hibernation ____ and aestivation in ___________?
(c)
The frogs have the ability to change the colour to hide them from enemies . This protective coloration called:-
(a)
The body of frog is divisible into:-
(a)
Body of a frog is divisible into head and trunk. A neck and tail are absent.
Which of the following is false about the frog?
I. Eyes are bulged out and covered by a nictitating membrane that protects them while in water
II. On either side of the eyes a membranous tympanum (ear) receives sound signals
III. The forelimbs and hind limbs help in swimming, walking, leaping and burrowing
IV. The hind limbs end in five digits and they are larger and muscular than fore limbs that end in four digits
V. Feet have webbed digits that help in swimming.
VI. Frogs exhibit sexual dimorphism.
(d)
All are correct
Go through the following figure indicating the male reproductive system of frog. Identify A to D
\(
\begin{array}{|c|c|c|c|c|}
\hline
\ & A & B & C & D \\ \hline
1 & \text{Bidder’s canal} & \text{Adrenal gland} & \text{Urinogenital duct} & \text{Rectum} \\ \hline
2 & \text{Bidder’s canal} & \text{Adrenal gland} & \text{Urinogenital duct} & \text{Cloaca} \\ \hline
3 & \text{Vasa efferentia} & \text{Adrenal gland} & \text{Urinogenital duct} & \text{Cloaca} \\ \hline
4 & \text{Vasa efferentia} & \text{Thyroid gland} & \text{Urinogenital duct} & \text{Cloaca} \\ \hline
\end{array}
\)
(c)
Match the following columns w.r.t. frog
\(
\begin{array}{|l|l|}
\hline \begin{array}{l}
\text { COLUMN I } \\
\end{array} & \begin{array}{l}
\text { COLUMN II } \\
\end{array} \\
\hline \text { (a). Foramen magnum } & \text { (i). Hindbrain } \\
\hline \text { (b). Olfactory lobes } & \text { (ii). Forebrain } \\
\hline \text { (c). Optic lobes } & \text { (iii). Skull } \\
\hline \text { (d). Cerebellum } & \text { (iv). Midbrain } \\
\hline
\end{array}
\)
(c)
Cloaca in an adult female frog receives the opening(s) of
(d)
Which of the following statements is incorrect w.r.t. frog?
(d)
Nuptial pads appear on the male frog’s forelimbs (thumb/prepollex region), not hind limbs. These pads are androgen-stimulated mucous gland swellings that help males grip the female during amplexu
Consider the given statements w.r.t. frog
(a) Fertilisation is external and takes place in water
(b) Tadpole larva has tail
(c) Frog can balance the food chain and food web
(d) In some countries, the muscular legs of frog are used as food by man
Which of the above statement is/are correct?
(d)
Find the correct statement w.r.t. frog?
(d)
a.❌ Incorrect. Frogs lack a typical external ear; instead, they have a tympanic membrane (tympanum) on the surface, whereas the round window is an internal feature in the middle ear
b.❌ Incorrect. While frogs use both skin (cutaneous) and lung respiration under normal conditions, during hibernation they rely almost exclusively on cutaneous respiration, since metabolic activity is very low and lungs are largely inactive
c.❌ Incorrect. Frogs do exhibit sexual dimorphism. Males have vocal sacs and nuptial pads on their forelimbs—features females lack
Both male and female frogs have:-
(c)
Select the incorrect statement w.r.t. frogs.
(a)
Frog lymph does contain proteins, though in smaller amounts than blood, and also includes white blood cells (but lacks red blood cells) .So saying blood cells are present but proteins are absent is false.
One of the main function of frog’s skin is:-
(a)
The structure present in man but absent in frog is:-
(b)
The structure present in humans but absent in frogs is the salivary glands. Unlike humans—who possess three paired salivary glands (parotid, submandibular, and sublingual)—frogs lack these specialized exocrine glands entirely
Which of the following is absent in vascular system of frog?
(a)
Frog red blood cells (RBCs) are nucleated, meaning they contain a nucleus. Enucleated RBCs (without nuclei) are characteristic of mammals, not amphibians like frogs.
Therefore, enucleated RBCs are absent in the frog’s vascular system.
In frog, digestion of fats occurs mostly in:
(d)
Male frog can be distinguished from female frog by the presence of:
(d)
The adult frog is:-
(b)
The above figure is related with female reproductive system of frog. Identify A to D
\(
\begin{array}{|c|c|c|c|c|}
\hline
\ & A & B & C & D \\ \hline
1 & \text{Ovary} & \text{Ureter} & \text{Oviduct} & \text{Urinary Bladder} \\ \hline
2 & \text{Ovary} & \text{Oviduct} & \text{Ureter} & \text{Cloaca} \\ \hline
3 & \text{Ovary} & \text{Urinary Bladder} & \text{Urinogenital duct} & \text{Ureter} \\ \hline
4 & \text{Ovary} & \text{Oviduct} & \text{Ureter} & \text{Urinary Bladder} \\ \hline
\end{array}
\)
(a)
In frog, food is captured by:-
(b)
Heart of frog differs from that of man by the presence of:-
(c)
Choose the correct statement w.r.t. frog
(d)
In frog, undigested solid wastes pass out through:-
(b)
Which of the following is false about the respiration of frog?
(a)
In water, frogs rely entirely on cutaneous respiration, where oxygen diffuses through the skin—a method suited for aquatic environments.
On land, they employ multiple methods: lungs (via buccal pumping), skin, and even the lining of the buccal cavity (mouth) . These are distinct from the cutaneous-only method used underwater.
In frog, ventricle opens into ________ on the ________ side of heart-
(c)
In frog, which one of the following opens into the duodenum?
(d)
In frogs, both bile from the gall bladder and pancreatic juice from the pancreas are transported through a common duct known as the hepatopancreatic duct. This duct opens directly into the duodenum (the initial segment of the small intestine)
In frog, a triangular structure called _____ joins the right ______ .
(c)
Identify A, B, C and D respectively:
(d)
In frog, which of the following receives blood through vena cava ?
(a)
In frogs, the vena cavae (both anterior and posterior) drain directly into the sinus venosus—a thin-walled, triangular chamber situated on the dorsal side of the heart
From the sinus venosus, blood flows into the right auricle, continues into the ventricle, and then is pumped onwards
Which of the following special venous system is present in frog?
(c)
In frog, lymphatic system consists of:-
(d)
In frog, the excretory system consists of –
(c)
In frog, urinary bladder is:-
(c)
In frog, the ureter acts as urinogenital duct in –
(a)
The medulla oblongata passes out through –
(a)
Which one is correct about the respiration of frog?
I. In frog , cutaneous and pulmonary respiration are found
II. A pair of elongated pink hollow lungs are found in thorax
III. \( \text { Atmospheric } \mathrm{O}_2 \longrightarrow \text { Nostril } \longrightarrow \text { Buccal cavity } \longrightarrow \text { Lungs } \)
IV. During aestivation and hibernation, gaseous exchange takes place through skin
(a)
All are correct
Which of the following is incorrect about the portal venous system?
(b)
Option (b) is false; the hepatic vein does not connect liver lobes in a portal system but instead drains blood out to the IVC
Which of the following is false?
(d)
Development in frog is direct.
❌ Incorrect—for most frog species, development is indirect, not direct
Which of the following is false about the nervous system of frog?
(a)
NCERT: Forebrain includes olfactory
lobes, paired cerebral hemispheres and unpaired
diencephalon
Frog has sense organs like sensory papillae (for touch), taste buds, nasal epithelium (smell), eyes, tympanum with internal ear (for hearing) out of these, which of the following is well-organised structure?
(a)
In frog , cutaneous respiration occurs
(a)
Which of the following sequences is correct for the passage of sperms in frog (male) ?
(b)
Which of the following is the use of frog?
(d)
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