CBSE Class 11 Biology Structural Organisation in Animals MCQs Set 05

Question: Muscle tissue cells are contractile, which means they
a) Are responsible for the production and secretion of enzymes
b) Are specialized in contraction and relaxation
c) Help in the movement of involuntary organs only
d) All of the above
Answer: b

Question: The fibres of which of the following muscles are fusiform and do not show striations
a) Skeletal muscles
b) Cardiac muscles
c) Both (a) and (b)
d) Smooth muscles
Answer: d

Question: The ciliated columnar epithelial cells in humans occur in
a) Eustachian tube and stomach lining
b) Bronchioles and fallopian tubes
c) Bile duct and oesophagus
d) Fallopian tubes and urethra
Answer: b

Question: The only type of cell seen in a tendon is
a) Muscle fibres
b) Reticular cells
c) Collagenous cells
d) Fibroblasts
Answer: d

Question: General function of gland is to
a) Protect the body
b) Control the function of epithelial tissues
c) Produce and secrete specialized compounds to control and maintain different body functions
d) Help to maintain blood pressure and nerve actions
Answer: c

Question: Smooth muscles are
a) Voluntary, branched, uninucleate
b) Voluntary, multinucleate, cylindrical
c) Involuntary, cylindrical, multinucleate
d) Involuntary, spindle shaped, uninucleated, tapering
Answer: d

Question: Three essential components of most neurons are
a) Simple epithelium, extracellular matrix and nerves
b) Axon, dendrites and cell body
c) Nerve cells, synapse and neuroglia
d) Mylein sheath, node of Ranvier and Schwann cells
Answer: b

Question: Epithelial tissue is distinguished from connective, muscular, or nervous tissue by its
a) Large extracellular matrix
b) Contractibility
c) Ability to carry action potentials
d) Basement membrane
Answer: d

Question: The shape of a person’s ear is mainly due to
a) Dense regular connective tissue
b) Dense irregular connective tissue
c) Elastic cartilage
d) Fibrocartilage
Answer: c

Question: Which one of the following pairs of structures distinguishes a nerve cell from other types of cells?
a) Vacuoles and fibres
b) Flagellum and medullary sheath
c) Nucleus and mitochondria
d) Cell body and dendrites
Answer: d

Statement Type Questions

Question: Which of the following statements is not correct regarding neural tissue?
a) It exerts the greatest control over the body’s responsiveness to changing conditions
b) Chondrocytes, the unit of neural system are excitable cells
c) Neuroglial cells protect and support neurons
d) When a neuron is suitably stimulated, an electrical disturbance is generated
Answer: b

Question: Select the correct statement regarding Periplaneta americana
a) There are 16 very long malpighian tubules at the junction of midgut and hindgut
b) Grinding of food is carried out only by the mouth parts
c) Nervous system is ventral with segmentally arranged ganglia joined by longitudinal connectives
d) Females bear a pair of short thread-like anal styles
Answer: d

Question: Read the statements and identify the tissue described:
(i) Single thin layer of flattened cells
(ii) Found in walls of blood vessels and lung alveoli
(iii) Forms a diffusion boundary
a) Squamous epithelium
b) Columnar epithelium
c) Ciliated epithelium
d) Compound epithelium
Answer: a

Question: Which of the following statement(s) is/are correct regarding compound epithelium?
a) Made of more than one layer; limited secretion/absorption
b) Provides protection against chemical and mechanical stresses
c) Covers skin, buccal cavity, pharynx, ducts of salivary and pancreatic glands
d) All of the above
Answer: d

Question: Which of the following statement(s) regarding cell junctions is/are correct?
a) Tight junctions prevent leakage across tissues
b) Adhering junctions act as cementing structures
c) Gap junctions allow communication and transfer of ions/molecules
d) All of the above
Answer: d

Critical Thinking Type Questions

Question: What external change is visible after the last moult of a cockroach nymph?
a) Development of anal cerci
b) Development of both forewings and hind wings
c) Development of labium
d) Mandibles become harder
Answer: b

Question: If the head of a cockroach is cut off, it still survives for about a week because
a) the body is covered with a hard chitinous exoskeleton
b) the head holds only a bit of the nervous system
c) the head is of no use
d) the food capturing apparatus is found elsewhere
Answer: b

Question: Which vertebrate tissue is an excellent source of collagen?
a) Liver
b) Nerve
c) Muscle
d) Tendon
Answer: d

Question: Lack of blood supply and presence of a noncellular basement membrane are characteristics of
a) muscular tissue
b) fluid connective tissue
c) epithelial tissue
d) nervous tissue
Answer: c

Question: Cartilage tissues heal slowly because
a) cartilage cells cannot reproduce
b) they lack direct blood supply
c) the intercellular material is missing
d) cartilage cells are surrounded by fluids
Answer: b

Question: The major functions of loose connective tissue include
a) occupying spaces between organs and supporting epithelia
b) supporting and surrounding blood vessels and nerves
c) cushioning organs, storing lipids, facilitating diffusion
d) All of the above
Answer: b

Question: Which cells are least likely to be replaced by new cells after injury?
a) Liver cells
b) Neurons
c) Malpighian layer of skin
d) Osteocytes
Answer: b