CBSE Class 11 (Science) Structural Organisation in Animals — practice questions
93 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Structural Organisation in Animals in the app →CARDIAC MUSCLE is unique because it is:Adipose tissue (fat storage) is a type of:The NICTITATING MEMBRANE in frogs is best described as:The frog heart has how many chambers?Metamorphosis in frogs (tadpole to adult) is regulated mainly by:In frog reproduction, AMPLEXUS refers to:The epithelium made of a single thin layer of flattened cells is:Squamous epithelium lines the air sacs of lungs and the walls of:The main role of squamous epithelium is to form a:The epithelium made of a single layer of cube-like cells is:The main functions of cuboidal epithelium are secretion and:Which part of the nephron has an epithelium bearing microvilli?Tall and slender cells with nuclei at the base form the:Columnar epithelium is found in the lining of the intestine and the:Ciliated epithelium works to move particles or:Which junction stops substances leaking across a tissue?Which junction cements neighbouring cells together?Which junction lets cells communicate by connecting their cytoplasm?Cartilage cells are called:The intercellular material of cartilage is solid, pliable and resists:Bone cells are called:Bone cells are present in spaces called:The bone matrix is rich in collagen fibres and:Blood cells are produced in the:Blood is a connective tissue that is:Muscle fibres are composed of numerous fine fibrils called:Which muscle fibres taper at both ends and show no striations?The communication junctions of cardiac muscle are called:A group of similar cells along with intercellular substances performing a function is called aHow many basic types of tissues build the bodies of all complex animals?Which organ is made of epithelial, connective, muscular and neural tissue together?The study of the morphology of internal organs of animals is conventionally calledIn animals, morphology refers to the study ofThe most common species of frog found in India isFrogs belong to which class of phylum Chordata?Animals like frogs, whose body temperature varies with the surroundings, are calledFrogs taking shelter in deep burrows during peak summer is known asWhich term describes the winter sleep of a frog in a deep burrow?The skin of a frog is smooth and slippery because ofThe dorsal side of a frog is generally colouredWhat is the colour of the ventral skin of a frog?A frog meets its water needs byWhich body parts are absent in an adult frog?What protects the bulged eyes of a frog while it is in water?The membranous tympanum on either side of a frog's eyes receivesHow many digits do the hind limbs of a frog end in?The forelimbs of a frog end in how many digits?Webbed digits on a frog's feet mainly help inWhich feature distinguishes a male frog from a female?Why is the alimentary canal of a frog comparatively short?Through which structure does the alimentary canal of a frog open to the outside?In a frog, bile secreted by the liver is stored in theWith what is food captured in a frog?Partially digested food passing from the stomach of a frog is calledBile and pancreatic juice reach the duodenum of a frog through aIn a frog, which substance emulsifies fats?Digested food is absorbed in a frog's intestine by finger-like folds calledRespiration through the skin of a frog in water is calledWhich organs help a frog breathe on land?Respiration by the lungs of a frog is known asDuring aestivation and hibernation, a frog exchanges gases through itsThe blood vascular system of a frog is of which type?The heart of a frog is covered by a membrane called theThe special venous connection between liver and intestine in a frog is theThe red blood cells of a frog areCompared with blood, frog lymph lacksThe kidneys of a frog areIn a male frog, the ureters act as aA frog excretes nitrogenous waste mainly as urea, so it isHow many pairs of cranial nerves arise from the brain of a frog?The brain of a frog is enclosed in a bony structure called theIn a frog, a pair of optic lobes is characteristic of theThe hind-brain of a frog consists ofThe medulla oblongata leaves the skull of a frog through theThe eyes of a frog are described asWhat part of the ear of a frog can be seen externally?Besides hearing, the ear of a frog also helps inIn a male frog, the testes are attached to the kidneys by a double fold of peritoneum calledHow many vasa efferentia arise from the testes of a frog?The ovaries of a frog have no functional connection with theAbout how many ova can a mature female frog lay at a time?Where does fertilisation take place in frogs?The larva of a frog, which undergoes metamorphosis to become an adult, is theWhy are frogs considered beneficial to farmers?Epithelial tissue lacks which of the following supplies?Which cell shapes are the three principal types of epithelial cell?Which epithelium forms the inner lining of blood vessels and the heart?Which glands secrete their products into a duct instead of the bloodstream?Which junction connects the cytoplasm of adjacent epithelial cells using connexins?Which junction forms a seal that stops water or solutes leaking between cells?Dense regular connective tissue is found inWhich two are classed as fluid connective tissues?Which tissue gives mechanical cushioning, for example in the sole of the foot?