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Biology · STRUCTURAL ORGANISATION IN ANIMALS
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Biology · STRUCTURAL ORGANISATION IN ANIMALS
In Rana tigrina, which organ(s) execute respiratory exchange during periods of aestivation and hibernation?
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Which statement accurately describes the anatomical location and opening of the urinary bladder in frogs?
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Given below are two statements: Statement I: Frogs never drink water directly but absorb it through the skin. Statement II: The skin of a frog is always maintained dry to prevent loss of body salts. In the light of the above statements, choose the most appropriate answer from the options given below:
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Consider the following statements regarding the vascular and respiratory systems of frog: (A) The lymph in frog lacks few proteins and erythrocytes (RBCs). (B) A special venous connection between the kidney and lower parts of the body is called the renal portal system. (C) During aestivation and hibernation, frog respires mainly by lungs. (D) RBCs of frog are enucleated and biconcave like mammalian RBCs. Which of the above statements are correct?
Read answer →Biology · STRUCTURAL ORGANISATION IN ANIMALS
How do the cellular components of frog blood differ fundamentally from mammalian erythrocytes, and how does frog lymph compare to frog blood?
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Identify the true anatomical statement regarding the heart chambers and accessory chambers in a frog:
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Review the anatomical features of Rana tigrina: (i) Circulation type, (ii) Nature of RBCs, and (iii) Tongue morphology. Which option correctly details all three?
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Analyse the structural divisions of the frog brain. Which of the following correctly pairs each region with its component structures?
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The midbrain of frog is anatomically characterised by the presence of:
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Consider the following statements regarding the morphology of frog (*Rana tigrina*): (A) The body is divisible into head, neck, trunk, and tail. (B) A membranous tympanum located on either side of the eyes receives sound signals. (C) Feet have webbed digits that assist in swimming. (D) Male frogs possess copulatory pads on the second digit of hindlimbs. Which of the above statements are correct?
Read answer →Biology · STRUCTURAL ORGANISATION IN ANIMALS
During unfavorable thermal extremes, frogs avoid harsh environmental conditions by entering dormant phases. Identify the correct physiological pairing of these dormant states:
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Match List-I with List-II regarding the vascular and circulatory structures in frog: List-I List-II A Sinus venosus I Ventral side of heart receiving blood from ventricle B Conus arteriosus II Triangular structure joining the right atrium C Hepatic portal system III Venous connection between kidney and lower body parts D Renal portal system IV Venous connection between liver and intestine Choose the correct answer from the options given below:
Read answer →Biology · STRUCTURAL ORGANISATION IN ANIMALS
Match List-I with List-II regarding parts of the nervous and sensory system in frog: List-I List-II A Midbrain I Olfactory lobes and cerebral hemispheres B Forebrain II Pair of optic lobes C Hindbrain III Cerebellum and medulla oblongata D Foramen magnum IV Opening through which medulla passes into vertebral column Choose the correct answer from the options given below:
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Consider the following statements regarding the control, coordination, and reproduction in frog: (A) Frog has 10 pairs of cranial nerves emerging from the brain. (B) Forebrain consists of olfactory lobes, paired cerebral hemispheres, and unpaired diencephalon. (C) Testes are adhered to the upper part of kidneys by a double fold of peritoneum called mesorchium. (D) In females, oviducts open directly into Bidder's canal before reaching the cloaca. How many of the above statements are correct?
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Eyes in a frog are simple eyes possessing only one unit. Reason (R): There are ten pairs of cranial nerves that arise from the brain in frog. In the light of the above statements, choose the correct answer from the options given below:
Read answer →Biology · STRUCTURAL ORGANISATION IN ANIMALS
Match List-I with List-II: List-I List-II A Aestivation I Protective coloration B Hibernation II Summer sleep C Camouflage III Winter sleep D Poikilotherms IV Cold blooded animals Choose the correct answer from the options given below:
Read answer →Biology · STRUCTURAL ORGANISATION IN ANIMALS
Regarding oviposition and development in Rana tigrina, how many ova are laid by a mature female at a time, and what type of development occurs?
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Read the following statements regarding the digestion and absorption in frog: (A) Food is captured by the bilobed tongue. (B) Final digestion takes place in the intestine. (C) Digested food is absorbed by finger-like folds called villi and microvilli in the inner wall of the intestine. (D) Partially digested food called chyle passes from stomach to the duodenum. Which of the above statements are correct?
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Consider the mechanical and biochemical processes of digestion in frogs. Which of the following correctly traces the progression of food?
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Among the sensory structures present in frogs, which represent well-organised organs rather than cellular aggregations around nerve endings?
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Trace the correct route followed by sperms in a male frog from their site of origin to their discharge:
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Male frogs can be distinguished externally from female frogs by the presence of:
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