Chapter 7: Structural Organisation in Animals
50 sample Structural Organisation in Animals flashcard questions and answers for NEET-UG Biology - Class 11, laid out as a readable study sheet. Read them straight on this page, print them, or save them as a PDF using your browser's print dialog.
Showing 50 of 127 questions in this chapter — practice online or download the PDF above for the full deck.
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| Question | Answer |
|---|---|
| In unicellular organisms, which functions are performed by a single cell? | Digestion, respiration, and reproduction. |
| What is a tissue? | A group of similar cells along with intercellular substances performing a specific function. |
| How many basic types of tissues are present in complex animals? | Four basic types of tissues. |
| What is formed when two or more organs perform a common function together? | An organ system. |
| Give examples of organ systems mentioned in the text. | Digestive system and respiratory system. |
| What does division of labour in multicellular organisms involve? | Cells, tissues, organs, and organ systems splitting up work for survival of the body. |
| What does morphology refer to in animals? | The external appearance of the organs or parts of the body. |
| What is anatomy? | The study of morphology of internal organs in animals. |
| Frogs belong to which class and phylum? | Class Amphibia of phylum Chordata. |
| What is the common species of frog found in India mentioned in the text? | Rana tigrina. |
| Why are frogs called cold-blooded or poikilotherms? | Their body temperature varies with the temperature of the environment. |
| What is camouflage in frogs? | The ability to change colour to hide from enemies. |
| What is mimicry according to the text? | Protective coloration shown by frogs. |
| What is aestivation? | Summer sleep taken by frogs during peak summer. |
| What is hibernation? | Winter sleep taken by frogs during winter. |
| Why is the skin of a frog smooth and slippery? | Due to the presence of mucus. |
| In what condition is frog skin maintained? | Moist condition. |
| What is the colour of the ventral side of a frog? | Uniformly pale yellow. |
| How do frogs absorb water? | Through the skin. |
| Into which two parts is the body of a frog divided? | Head and trunk. |
| Which body parts are absent in frogs? | Neck and tail. |
| What protects the eyes of a frog while in water? | Nictitating membrane. |
| What is the function of the tympanum in frogs? | It receives sound signals. |
| What are the functions of the forelimbs and hind limbs in frogs? | Swimming, walking, leaping, and burrowing. |
| How many digits are present in the hind limbs of frogs? | Five digits. |
| Why are frog feet webbed? | To help in swimming. |
| What is sexual dimorphism in frogs? | Males and females showing different external features. |
| Which structures distinguish male frogs from female frogs? | Vocal sacs and copulatory pads on the first digit of forelimbs. |
| Why is the alimentary canal short in frogs? | Because frogs are carnivores, which results in a reduced length of the intestine. |
| What are the functions of frog forelimbs and hind limbs? | Swimming, walking, leaping, and burrowing. |
| How many digits are present in the hind limbs of frogs? | Five digits. |
| Why are frog hind limbs larger and muscular? | They help in movement such as swimming and leaping. |
| How many digits are present in the forelimbs of frogs? | Four digits. |
| What is the function of webbed digits in frogs? | They help in swimming. |
| What is sexual dimorphism in frogs? | Males and females show different external features. |
| Which structures are present in male frogs but absent in female frogs? | Vocal sacs and copulatory pads on the first digit of forelimbs. |
| Which organ systems are present in the frog body cavity? | Digestive, circulatory, respiratory, nervous, excretory, and reproductive systems. |
| What are the two main parts of the digestive system in frogs? | Alimentary canal and digestive glands. |
| Why is the alimentary canal short in frogs? | Because frogs are carnivores, which results in a reduced length of the intestine. |
| Into which cavity does the mouth open in frogs? | Buccal cavity. |
| Through which structure does the buccal cavity lead to the oesophagus? | Pharynx. |
| Describe the oesophagus of a frog. | It is a short tube opening into the stomach. |
| What are the successive parts of the frog alimentary canal after the stomach? | Intestine, rectum, and cloaca. |
| What does the liver secrete in frogs? | Bile. |
| Where is bile stored in frogs? | Gall bladder. |
| Which digestive gland produces pancreatic juice? | Pancreas. |
| What type of tongue is present in frogs? | Bilobed tongue. |
| What is the function of the bilobed tongue in frogs? | Capturing food. |
| Which substances help in digestion inside the frog stomach? | HCl and gastric juices. |
| What is chyme? | Partially digested food passed from stomach to duodenum. |
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