22339 + Interview Questions in Biology in Class 11 Page 236 InterviewSolution

11751.	Question : Specialized epidermal cells surrounding the guard cells are called
Answer» COMPLEMENTARY CELLS Subsidiary cells BULLIFORM cells Lenticels Answer :B

Discussion

11752.	Question : Specialised structures for reproduction via fragmentation in bryophytes are
Answer» suckers offsets gemmae spores Answer :C

Discussion

11753.	Question : Specialised inflorescence is seen in _______.
Answer» ASTERACEAE Fabaceae Arecaceae Musaceae Solution :Asteraceae

Discussion

11754.	Question : Special venous connection between liver and intestine and between kidney and intestine is found in frog, what are they called ?
Answer» Solution :In frogs, special type of connection is seen between liver and INTESTINE. It is called HEPATIC PORTAL system. The connection between kidney and LOWER PARTS of the body of the frog is called renal portal system.

Discussion

11755.	Question : Specialised asexual reproductive structures found in bryophytes are
Answer» Tubers Gemmae PROTONEMA ARCHEGONIA ANSWER :B

Discussion

11756.	Question : Special type of red pigment present in the eye spot of Euglena and Crustacea is called
Answer» PHYCOERYTHRIN ASTAXANTHIN Carotene Xanthophyll Answer :B

Discussion

11757.	Question : Special sound producing organ in birds is
Answer» furcula LARYNX SYRINX KEEL ANSWER :C

Discussion

11758.	Question : Special reproductive structures called gemmae are found in the members of
Answer» BRYOPHYTA Algae Gymnosperms ANGIOSPERMS ANSWER :A

Discussion

11759.	Question : Special cells on the coelomic wall of the intestine called ................ are excretory in function in carthworms.
Answer» SOLUTION :chloragogen CELLS

Discussion

11760.	Question : Spathe of Cocos is
Answer» UNMODIFIED BRACT MODIFIED BRACTEOLE Modified bract Modified penducle Answer :C

Discussion

11761.	Question :Space between piamater and arachnoid is .........
Answer» subdural supra archnoid eqidural SUBARACHNOID SOLUTION :subarachnoid

Discussion

11762.	Question : Space between cornea and lens is filled with _______while that between the lens and retina is filled by ________
Answer» ANSWER :AQUEOUS HUMOUR ; VITREOUS humour

Discussion

11763.	Question : Space between cornea and lens is
Answer» AQUEOUS CHAMBER VITREOUS chamber Fovea centralis Cochlea Answer :B

Discussion

11764.	Question : Source of riboflavin is
Answer» ASHBYA gossypi Bakers YEAST Torula yeast All ANSWER :A

Discussion

11765.	Question : Source of maximum sulphur is
Answer» oceans land rocks lakes Answer :C

Discussion

11766.	Question : Sort out the animals on the basis of their symmetry (radial or bilateral) coelenterates, ctenophores, annelids, arthropods and echinoderms.
Answer» Solution :RADIAL SYMMETRY : COELENTERATES, Ctenophores and Echinoderms Bilateral symmetry : Annelids and ARTHROPODS.

Discussion

11767.	Question : Sometimes the muscles do not relax and become stiff. This condition is known as Rigor Mortis which is due to fall of concentration of
Answer» MYOSIN Relaxin Actin ATP Answer :D

Discussion

11768.	Question : Sometimes in budding, buds do not get separated from the mother individual and form
Answer» clones gemmule colony exogenous bud Answer :C

Discussion

11769.	Question : Some vertebrae in birdsfuses to form
Answer» SYNSACRUM furcula COCCYX NONE of these ANSWER :A

Discussion

11770.	Question : AmphibolicPathwayis seen in respiration.
Answer» Solution :Glucose is the formed substance for RESPIRATION. Moreover in some cases lipid and proteins are also usedas respiratorysubstrate. Lipid is BROKEN down into fatty acid and glycerol. Fatty acidbe degraded to acetyl CoAand glycerol gets converted into PGAL and enters respiratory pathway. But whenthe organismsneed to synthesize fatty acids, acetyl CoA would be withdrawn formthe respiratory pathway. Hence the respiratory pathway comes into picture bothduring breakdownand synthesis of fattyacid. Similarly in BREAKINGDOWN and SYNTHESISOF proteinrespiratory pathways areused. Hence anabolism and catabolism both are included in thispathway. So it is calledamphibolic pathway.

Discussion

11771.	Question : Some varieties of wheat are known as spring wheat while others are called winter wheat. Former variety is sown and planted in spring and is harvested by the end of the same season. However, winter varieties, if planted in spring, fail to flower or produce mature grains within a span of a flowering season. Explain, why?
Answer» Solution :Some annual food plants such as wheat do not flower, unless they experience a low temperature. They remain vegetative during spring (warm period) but grow further to bear flowers and fruits after receiving low temperature (in winter). The low temperature in winter PREVENTS precocious REPRODUCTIVE development in autumn, THUS enabling the plant to reach vegetative maturity before reproductive phase. Thus, when spring varieties are planted in spring, they flower and bear fruits prior to the end of growing season. But, if the winter varieties are planted in spring, they fail to flower and produce mature grains before the end of growing season, as they COULD not perceive low temperature of winter.

Discussion

11772.	Question : Some vascular bundles are described as open because these
Answer» are surrounded by pericycle but no endodermis are CAPABLE of producing SECONDARY xylem and phloem possess conjunctive TISSUE between xylem and phloem are not surrounded by pericycle. ANSWER :B

Discussion

11773.	Question : Some structures are given below. How many of them are modifications of stem? Rhizome of turmeric, Bulb of onion, insectivorous pitcher of Nepenthes, Potato tubers, tubers of sweet potato, Tendrils of Pisum sativum,
Answer» Four Three FIVE Six Answer :B

Discussion

11774.	Question : Some symbiotic organisms are very good pollution indicators and composed of a chlorophyllous and a non-chlorophyllous member. Describe them.
Answer» SOLUTION :LICHENS,

Discussion

11775.	Question : Some stems are modified for the storage of food. They are :
Answer» RHIZOMES of ginger tubers of POTATOES CORMS of aroids all of these Answer :D

Discussion

11776.	Question : Some primtive relatives of animals live as predators or parasites and are divided into four major groups. Elaborate.
Answer» SOLUTION :PROTOZOANS.

Discussion

11777.	Question : Some plants of arid regions modify their stems into flattened or fleshy or cylindrical structures. Such stem is found in
Answer» Turmeric and Colocacia Chrysanthemum and Fragaria Euphorbia and Opuntia PISTIA and EICHHORNIA -. ANSWER :C

Discussion

11778.	Question : Some plants flower in summer and some flower in winters.
Answer» SOLUTION :Because some PLANTS REQUIRED SPECIFIC PHOTOPERIOD.

Discussion

11779.	Question : Some periplast covered golden dinoflagellates called zooxanthellae occur in a number of marine protists andinvertebrates. These are
Answer» CILIATES, radioalarians FORAMINIFERANS sponges, JELLY fishes gastropods all of the above ANSWER :D

Discussion

11780.	Question : Some of the unusual functions performed by specialisedstems are:
Answer» PROTECTION REPRODUCTION PHOTOSYNTHESIS all of these ANSWER :D

Discussion

11781.	Question : Some of these terms/chemicals are associated with the C_(4) cycle. Explain. Hatch slack pathway Calvin cycle (c ) PEP carboxylase (d) Bundlesheath cells
Answer» Solution :Hatch - slack pathway : The formatio of glucose occurs in a different way in `C_(4)` pathway than `C_(3)` pathway. That was explained by two scientists M.D. Hatch and C.R. Slack. So its is called Hatch - Slack pathway. Calvin cycle : This PROCESS occur in bundle sheath cells where glucose is formed by fixation of `CO_(2)`. (c )PEP Carboxylase : The enzyme located in MESOPHYLL cells of `C_(4)` PLANTS that fixes `CO_(2)` and forms oxaloacetic acid fused with 4C. (d) Cell of bundle sheath : These are special type of around vascular bundles. That are located in veins of monocots. They do possess chloroplasts. Here `C_(3)` pathway becomes granaless and Glucose is formed.

Discussion

11782.	Question : Some of the properties of tissues are not the constituents of its cells. Give three examples to support the statement.
Answer» Solution :It is indeed true that some of the proporties of tissues are not the constituents of its cells. Following three examples SUPPORT this statement. A muscle tissue is capable of CONSTRUCTION but all its constituent cells may not be capable of during so. The SKELETAL SYSTEM is composed of bones and cartilage. A bone is hard and lightweight while cartilage is soft. But they possess different constituents. Blood is capable of carrying oxygen but WBCs are not capable of doing inspite of being the constituents of blood.

Discussion

11783.	Question : Some nephron have very long loop of Henle that run deep into the medulla and are called ……..
Answer» SOLUTION :JUXTA MEDULLARY NEPHRONS

Discussion

11784.	Question : Some monerans are prokaryotic.
Answer» ANSWER :F

Discussion

11785.	Question : Some members are given here. They all belong to how many genus, species and kingdom. Lion, Tiger, Potato, Brinjal, Mango, Wheat.
Answer» `{:("GENUS","species", "KINGDOM"),("Four","Six","Two"):}` `{:("Genus","species", "Kingdom"),("Five","Four ","ONE "):}` `{:("Genus","species", "Kingdom"),("Four","Six","Two"):}` `{:("Genus","species", "Kingdom"),("THREE","Six","Three"):}` Answer :A

Discussion

11786.	Question : Some Gram -ve bacteria have peptidoglycan and an extra layer of
Answer» lipo-polysaccharide lipo-protein protein both 1 and 3 Answer :D

Discussion

11787.	Question : Some epithelia are pseudostratified. What does this mean?
Answer» Solution :Pseudostratified epithelial CELLS are columnar, but unequal in size. ALTHOUGH the epithelium is SINGLE layered yet it appears to be multilayered DUE to the fact that nuclei lie at DIFFERENT levels in different cells.

Discussion

11788.	Question : Some animals of phylum ‘Cnidaria’ show metagenesis. What is it? Give an example of animal that shows metagenesis.
Answer» Solution :(i) ALTERNATION of generation between SEXUAL and ASEXUAL reproduction. (II) OBELIA

Discussion

11789.	Question : Somatostatin from hypothalamus inhibits the release of growth hormone from pituitary.
Answer» ANSWER :TRUE

Discussion

11790.	Question : Solenocytes are the excretory cells present in ..........
Answer» SOLUTION : AMPHIOXUS

Discussion

11791.	Question : Soil is known as reservoir of minerals elements.
Answer» Solution :Soil POSSESSES various types and size of particles LIKE SAND, alluvial, clay, clay particles (colloid) and other suspension particles in WATER in soil. Colloids take part in exchange of positive ions possessed by organic mineral surface. MOREOVER many essential elements one absorbed by soil to the plants. Thus soil acts as reservoir of mineral elements

Discussion

11792.	Question : Soil culture and Hydroponics.
Answer» SOLUTION :

Discussion

11793.	Question : Softwoodlacks ………..
Answer» Tracheids PITH Vessels MEDULLARY rays ANSWER :C

Discussion

11794.	Question : Soft wood is associated with
Answer» HIGHER pteridophytes angiosperms dicot stems gymnosperms Answer :D

Discussion

11795.	Question : Sodium pump , polarised membrane , resting membrane potential , threshold stimulus
Answer» ANSWER :THRESHOLD STIMULUS

Discussion

11796.	Question : Sodium-potassium pump transports
Answer» `Na^+ and K^+` out of the neuron `Na^+ and K^+` into the neuron `Na^+` into the neuron and `K^+` out of the neuron `K^+` into the neuron and `Na^+` out of the neuron Solution :Each `Na^+ - K^+` pump expels three `Na^+` IONS for every two `K^+` ions IMPORTED.

Discussion

11797.	Question : Sodium- potassium pump is
Answer» A HORMONE An enzyme A PROTEIN carrier An organelle Answer :C

Discussion

11798.	Question : Sodium is reabsorbed by ........... ..... in the proximal convoluted Tubule
Answer» SOLUTION :ACTIVE TRANSPORT

Discussion

11799.	Question : Sodium ions cross a membrane through transport proteinsthat receive an energy boost. This is an example of :
Answer» PASSIVE transport ACTIVE transport facilitated diffusion both (a) and (C) Solution :active transport

Discussion

11800.	Question : Sodium hypochlorite is used in
Answer» STERILIZING the medium Sterilizing the explant Inoculation Morphogenesis Answer :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : Specialized epidermal cells surrounding the guard cells are called

Question : Specialised structures for reproduction via fragmentation in bryophytes are

Question : Specialised inflorescence is seen in _______.

Question : Special venous connection between liver and intestine and between kidney and intestine is found in frog, what are they called ?

Question : Specialised asexual reproductive structures found in bryophytes are

Question : Special type of red pigment present in the eye spot of Euglena and Crustacea is called

Question : Special sound producing organ in birds is

Question : Special reproductive structures called gemmae are found in the members of

Question : Special cells on the coelomic wall of the intestine called ................ are excretory in function in carthworms.

Question : Spathe of Cocos is

Question :Space between piamater and arachnoid is .........

Question : Space between cornea and lens is filled with _______while that between the lens and retina is filled by ________

Question : Space between cornea and lens is

Question : Source of riboflavin is

Question : Source of maximum sulphur is

Question : Sort out the animals on the basis of their symmetry (radial or bilateral) coelenterates, ctenophores, annelids, arthropods and echinoderms.

Question : Sometimes the muscles do not relax and become stiff. This condition is known as Rigor Mortis which is due to fall of concentration of

Question : Sometimes in budding, buds do not get separated from the mother individual and form

Question : Some vertebrae in birdsfuses to form

Question : AmphibolicPathwayis seen in respiration.

Question : Some vascular bundles are described as open because these

Question : Some structures are given below. How many of them are modifications of stem? Rhizome of turmeric, Bulb of onion, insectivorous pitcher of Nepenthes, Potato tubers, tubers of sweet potato, Tendrils of Pisum sativum,

Question : Some symbiotic organisms are very good pollution indicators and composed of a chlorophyllous and a non-chlorophyllous member. Describe them.

Question : Some stems are modified for the storage of food. They are :

Question : Some primtive relatives of animals live as predators or parasites and are divided into four major groups. Elaborate.

Question : Some plants of arid regions modify their stems into flattened or fleshy or cylindrical structures. Such stem is found in

Question : Some plants flower in summer and some flower in winters.

Question : Some periplast covered golden dinoflagellates called zooxanthellae occur in a number of marine protists andinvertebrates. These are

Question : Some of the unusual functions performed by specialisedstems are:

Question : Some of these terms/chemicals are associated with the C_(4) cycle. Explain. Hatch slack pathway Calvin cycle (c ) PEP carboxylase (d) Bundlesheath cells

Question : Some of the properties of tissues are not the constituents of its cells. Give three examples to support the statement.

Question : Some nephron have very long loop of Henle that run deep into the medulla and are called ……..

Question : Some monerans are prokaryotic.

Question : Some members are given here. They all belong to how many genus, species and kingdom. Lion, Tiger, Potato, Brinjal, Mango, Wheat.

Question : Some Gram -ve bacteria have peptidoglycan and an extra layer of

Question : Some epithelia are pseudostratified. What does this mean?

Question : Some animals of phylum ‘Cnidaria’ show metagenesis. What is it? Give an example of animal that shows metagenesis.

Question : Somatostatin from hypothalamus inhibits the release of growth hormone from pituitary.

Question : Solenocytes are the excretory cells present in ..........

Question : Soil is known as reservoir of minerals elements.

Question : Soil culture and Hydroponics.

Question : Softwoodlacks ………..

Question : Soft wood is associated with

Question : Sodium pump , polarised membrane , resting membrane potential , threshold stimulus

Question : Sodium-potassium pump transports

Question : Sodium- potassium pump is

Question : Sodium is reabsorbed by ........... ..... in the proximal convoluted Tubule

Question : Sodium ions cross a membrane through transport proteinsthat receive an energy boost. This is an example of :

Question : Sodium hypochlorite is used in

Question : Space between cornea and lens is filled with _while that between the lens and retina is filled by __