22339 + Interview Questions in Biology in Class 11 Page 259 InterviewSolution

12901.	Question : __________present in the cell wall of brown algae prevents dying or freezing.
Answer» SOLUTION :phycocolloids

Discussion

12902.	Question : Presence of xylem vessels is a characteristic feature of
Answer» THALLOPHYTES PTERIDOPHYTES Gymnosperms Angiosperms Answer :D

Discussion

12903.	Question : Presence ofsheathing covering on the stem either partially or wholly is the characteristic of certain-
Answer» Monocots Fern Cycas Coconut Answer :A

Discussion

12904.	Question : Present cohesion-tension-transpiration pull model of water transport.
Answer» Solution :In xylem the FLOW of water upward through in PLANTS by transpiration is mainly dependent on following physical characteristics. Cohesion Force : MUTUAL attraction between water MOLECULES. Adhesion Force : attraction of water molecules to polar surfaces (such as the surface of tracheary elements). Surface Tension : water molecules are attracted to each other in the liquid phase more than to water in the gas phase. These PROPERTIES give water high tensile strength, as ability to resist a pulling force and high capillarity. The ability to rise in thin tubes. In plants capillarity is aided by the small diameter of the tracheary elements the tracheids and vessel elements.

Discussion

12905.	Question : presence of water vascular system Write any functions of water vascular system among them
Answer» Solution :LOCOMOTION , respiration, EXCRETION CAPTURE or TRANSPORT of food , digestion

Discussion

12906.	Question : Presence of nematocysts is a characteristic feature of the phylum :
Answer» COELENTERATA ANNELIDA ECHINODERMATA PORIFERA SOLUTION :Coelenterata

Discussion

12907.	Question : Presence of leaves of more than one type on the same plantis termed as .......
Answer» SOLUTION :heterophylly

Discussion

12908.	Question : Presence of large number of alveoli around alveolar ducts opening into bronchioles in mammalian lungs is
Answer» Inefficient system of VENTILATION with LITTLE of residual AIR Inefficient system of ventilation with HIGH PERCENTAGE of residualair An efficient system of ventilation with no residual air An efficient system of ventilation with little residual air Solution :An efficient system of ventilation with little residual air

Discussion

12909.	Question : Presence of gills in the tadpole of frog indicates that
Answer» FISHES were amphibious in the past fishes evolved from frog-like ancestors FROGS will have gills in future frogs evolved from gilled ANCESTOR ANSWER :D

Discussion

12910.	Question : Presence of different types of teeth is called ……………………………
Answer» SOLUTION :HETERODONT

Discussion

12911.	Question : Presence of collenchymatous hypodermis is one of the important character of
Answer» Monocot ROOT Monocot LEAF Dicot stem Monocot stem Answer :C

Discussion

12912.	Question : Presence of bundle sheath is characteristic of
Answer» `C_(4)`PLANTS Xerophytic plants Grass family `C_(3)` plants Solution :PRESENCE of bundle SHEATH is characteristic of`C_(3)` plants.

Discussion

12913.	Question : Prepare a report of traditional medicines.
Answer» Solution :TRADITIONAL MEDICINES : AYURVEDA, Siddha, Unani, ACUPUNCTURE, HOMEOPATHY, Naturonitu Chinese or oriental medicine.

Discussion

12914.	Question : Presence of bilayered lipid in the cell membrane was first reported by
Answer» Singer Nicholson DAVSON and Danielli Corti and FONTANA ANSWER :C

Discussion

12915.	Question : Prepare a list of some animals that are found parasitic on human beings
Answer» Solution :Ascaris LUMBRICOIDES(Roundworm) Taenia solium(HOOKWORM) WUCHERERIA bancrofti(FILARIAL WORM)

Discussion

12916.	Question : Prepare a list of some animals that are found parasitic on human beings.
Answer» Solution :Parasites on human body : (1) Taenia (Tape worm) (2) Ascaris (Round worm) (3) Ancylostoma (HOOK worm) (4) ENTEROBIUS (Pin worm) (5) WUCHERERIA (Filaria worm)

Discussion

12917.	Question : Prepare a flow chart showing the passage of air to lungs
Answer» SOLUTION :

Discussion

12918.	Question : Prepare a flow chart showing the mechanism of hearing in man using the following terms. External ear, Auditory nerve, Ear ossicles, Ear drum, Oval window, Auditory centre, Cochlea, Cerebrum.
Answer» SOLUTION :`External EAR to Ear drum to Ear OSSICLES to Oval window to COCHLEA to Auditory nerve to auditory CENTRE to Cerebrum`

Discussion

12919.	Question :Preneoplastic cells are
Answer» PRECANCEROUS cells neoplasitc cells PREMALIGNANT cells without genetic changes in PROTOONCOGENES NORMAL cells Answer :A

Discussion

12920.	Question : Premature leaf fall is due to deficiency of
Answer» phosphours nitrogen calcium potassium Answer :A

Discussion

12921.	Question : Premature leaf fall is caused due to the deficiency of ...............................
Answer» SOLUTION :NITROGEN

Discussion

12922.	Question : Preganglionic sympathetic fibres are generally___________than postganlionic sympathetic fibres while preganglionic parasympathetic fibres while preganglionic parasympathetic fibres are ____than postganglionic parasympathetic fibres.
Answer» ANSWER :SHORT ; LONG

Discussion

12923.	Question : Predict the effects of removal of pancreas from the human body.
Answer» Solution :PANCREAS is both exocrine and endocrine gland. It is LOCATED just below the stomach as a leaf like structure. It secretes digestive enzymes and hormones like insulin and GLUCOGON. The digestive enzymes digest carbohydrates, proteins and fats. Insulin and glucose regulate blood sugar LEVEL. If pancreas is removed from the BODY, digestion and maintaince of blood sugar level gets affecterd.

Discussion

12924.	Question : Pre-pro insulin is formed by _______
Answer» C CHAIN DISULPHIDE bonds COOH and `NH_2` GROUP Polypeptide chain ANSWER :D

Discussion

12925.	Question : Prawn is rich in ......... protein with low fat content.
Answer» SOLUTION :GLYCOGEN

Discussion

12926.	Question : Prawn belongs to the class
Answer» CRUSTACEA Annelida COELENTERATA ECHINODERMATA SOLUTION :Crustacea

Discussion

12927.	Question : Pragnancy hormone is ……….
Answer» ESTROGEN and progesterone Androgen Progesterne GASTRIN ANSWER :C

Discussion

12928.	Question : Potomater is used for measuring
Answer» LIGHT INTENSITY GROWTH rate photosynthetic rate transpiration rate Answer :D

Discussion

12929.	Question : Potential difference across resting membrane is negatively charged. This is due to differential distribution of the following ions.
Answer» `Na^(+)and K^(+)" ions"` `CO_(3)^(2+) and CL^(-)" ions"` `Ca^(2+) and MG^(2+)" ions"` `Ca^(+4) and Cl^(-2)" ions"` Solution :Ion passages present in neurilemma controls the movement of `Na^(+) and K^(+)` in outer and INNER REGIONS.

Discussion

12930.	Question :Poterion is an example of:
Answer» PROTOZOA PORIFERA Cnidaria Ctenophora SOLUTION :Porifera

Discussion

12931.	Question : Potential energy stored in organic molecules in converted into chemical energy in high energy phosphate bonds of ATP.
Answer» Solution :In the process of RESPIRATION, the POTENTIAL energy stored in ORGANIC compounds is released in the form of chemical energy.

Discussion

12932.	Question : Potential difference across resting mem- brane is negatively charged. Thisis due to differential distribution of the following ions
Answer» `Na^+ and K^+` ions `CO^(3+ +) and Cl^(-)` ions `CA^(+ +) and MG^(+ +)` ions `Ca^(+4) and Cl^(-)` ions Solution :NA

Discussion

12933.	Question : Potato tuber is a modified stem as it
Answer» Bears ROOTS Bears axillary buds LACKS NODES Is NON - green Answer :B

Discussion

12934.	Question : Potato and Tapioca store starch rich food in underground tubers. We consider potato as stem modification and tapioca as root modification . Why?
Answer» SOLUTION :Potato has a modified stem which grows on underground stems which have the CAPACITY to GROW as a whole plant. But tapioca has a modified food storage roots of fibrous roots and root filled with food. Also potato tubers have buds that sprout leaves and stems from themwhile tapioca roots do not posses theseproperties.

Discussion

12935.	Question : Potato has scale leaves and not foliage leaves. Give reason.
Answer» Solution :Potato is an example for UNDERGROUND STEM modification tuber. SINCE they cannot photosynthesize. Foliage LEAVES are absent and scale leaves are produced by the buds.

Discussion

12936.	Question : Posterior pituitary gland secretes oxytocin/prolactin.
Answer» SOLUTION :OXYTOCIN

Discussion

12937.	Question : Potato and brinjal belongs to (A) same species (B) same genus (C) Same family (D) Both ( B) and (C )
Answer» same species same genus Same family Both ( B) and (C ) ANSWER :D

Discussion

12938.	Question : Potassium and Osmotic potential - Comment.
Answer» Solution :Potassium (K) plays a KEY role in MAINTAINING OSMOTIC potential of the cell. The ABSORPTION of water, movement of stomata and turgidity are due to osmotic potential.

Discussion

12939.	Question : Post-ganglionic nerve fibres of sympathetic nerve system are
Answer» adrenergic cholinergic both (i) and (II) NONE of above

Discussion

12940.	Question : Positive evidence for aquatic ancestory of bryophytes is
Answer» CILIATED sperms Gametophytic body Protonema Oogamous SEXUAL reproduction Answer :A

Discussion

12941.	Question :Position of odd sepal and odd petal in the flowers of fabaceae respectively
Answer» ANTERIOR and POSTERIOR Posterior and Anterior Anterior and Anterior Posterior and Posterior Answer :A

Discussion

12942.	Question : 'Portuguese man of war' is(a) coral(b) sea anemone(c) platypus(d) Physalia
Answer» coral sea anemone platypus PHYSALIA

Discussion

12943.	Question :Portuguese man-of-war isscientificallyknown as ………
Answer» SOLUTION :PHYSALIA

Discussion

12944.	Question : Porphyrin ring of the chlorophyll mol ecule has following number of pyrrole rings
Answer» one two three four Answer :D

Discussion

12945.	Question : Porphyra belongs to
Answer» Fungi ALGAE Bacteria Bryophyta Solution :PORPHYRA BELONGS to RED algae.

Discussion

12946.	Question : Porphyra is a
Answer» RED alga Brown alga GREEN alga Yellow - green alga Answer :A

Discussion

12947.	Question : Population surge 250 years ago was due to
Answer» INDUSTRIAL revolution agricultural revolution cultural revolution intellectual revolution Answer :A

Discussion

12948.	Question : Population A-have the intrinsic rate of natural incease in 0.2 Population B-have the intrinsic rate of natural increase is 0.3 Population C-have the intrinsic rate of natural increases is 0.4 Population D-have the intrinsic rate of natural increase is 0.5 Which population will increase fastest among all of the given population?
Answer» D C B A Answer :A

Discussion

12949.	Question : Pons' connects the
Answer» two cerebral HEMISPHERES two lobes of cerebellum cerebrum and cerebellum spinal cord with the brain Solution :PONS is located in front of the cerebellum below the midbrain and above the MEDULLA oblongata.It consists of NERVE fibres that connect the two hemispheres of cerebellum.

Discussion

12950.	Question : Polytrichum is
Answer» a liverwort a MOSS a horsetail a ferm Solution :POLYTRICHUM is a moss.

Discussion

Explore topic-wise InterviewSolutions in .

Question : __________present in the cell wall of brown algae prevents dying or freezing.

Question : Presence of xylem vessels is a characteristic feature of

Question : Presence ofsheathing covering on the stem either partially or wholly is the characteristic of certain-

Question : Present cohesion-tension-transpiration pull model of water transport.

Question : presence of water vascular system Write any functions of water vascular system among them

Question : Presence of nematocysts is a characteristic feature of the phylum :

Question : Presence of leaves of more than one type on the same plantis termed as .......

Question : Presence of large number of alveoli around alveolar ducts opening into bronchioles in mammalian lungs is

Question : Presence of gills in the tadpole of frog indicates that

Question : Presence of different types of teeth is called ……………………………

Question : Presence of collenchymatous hypodermis is one of the important character of

Question : Presence of bundle sheath is characteristic of

Question : Prepare a report of traditional medicines.

Question : Presence of bilayered lipid in the cell membrane was first reported by

Question : Prepare a list of some animals that are found parasitic on human beings

Question : Prepare a list of some animals that are found parasitic on human beings.

Question : Prepare a flow chart showing the passage of air to lungs

Question : Prepare a flow chart showing the mechanism of hearing in man using the following terms. External ear, Auditory nerve, Ear ossicles, Ear drum, Oval window, Auditory centre, Cochlea, Cerebrum.

Question :Preneoplastic cells are

Question : Premature leaf fall is due to deficiency of

Question : Premature leaf fall is caused due to the deficiency of ...............................

Question : Preganglionic sympathetic fibres are generally___________than postganlionic sympathetic fibres while preganglionic parasympathetic fibres while preganglionic parasympathetic fibres are ____than postganglionic parasympathetic fibres.

Question : Predict the effects of removal of pancreas from the human body.

Question : Pre-pro insulin is formed by _______

Question : Prawn is rich in ......... protein with low fat content.

Question : Prawn belongs to the class

Question : Pragnancy hormone is ……….

Question : Potomater is used for measuring

Question : Potential difference across resting membrane is negatively charged. This is due to differential distribution of the following ions.

Question :Poterion is an example of:

Question : Potential energy stored in organic molecules in converted into chemical energy in high energy phosphate bonds of ATP.

Question : Potential difference across resting mem- brane is negatively charged. Thisis due to differential distribution of the following ions

Question : Potato tuber is a modified stem as it

Question : Potato and Tapioca store starch rich food in underground tubers. We consider potato as stem modification and tapioca as root modification . Why?

Question : Potato has scale leaves and not foliage leaves. Give reason.

Question : Posterior pituitary gland secretes oxytocin/prolactin.

Question : Potato and brinjal belongs to (A) same species (B) same genus (C) Same family (D) Both ( B) and (C )

Question : Potassium and Osmotic potential - Comment.

Question : Post-ganglionic nerve fibres of sympathetic nerve system are

Question : Positive evidence for aquatic ancestory of bryophytes is

Question :Position of odd sepal and odd petal in the flowers of fabaceae respectively

Question : 'Portuguese man of war' is(a) coral(b) sea anemone(c) platypus(d) Physalia

Question :Portuguese man-of-war isscientificallyknown as ………

Question : Porphyrin ring of the chlorophyll mol ecule has following number of pyrrole rings

Question : Porphyra belongs to

Question : Porphyra is a

Question : Population surge 250 years ago was due to

Question : Pons' connects the

Question : Polytrichum is

Question : Preganglionic sympathetic fibres are generally_______than postganlionic sympathetic fibres while preganglionic parasympathetic fibres while preganglionic parasympathetic fibres are than postganglionic parasympathetic fibres.