22339 + Interview Questions in Biology in Class 11 Page 229 InterviewSolution

11401.	Question : Sympathetic nervous system induces
Answer» SECRETION of digestive JUICES HEARTBEAT secretion of saliva all of these Solution :Sympathetic neural system ACCELERATES heartbeat and INHIBITS secretion of digestive juices and saliva.

Discussion

11402.	Question : Sympathetic nerves________the pupil while parasympathetic nerves _______it.
Answer» ANSWER :DILATE, CONSTRICT

Discussion

11403.	Question : Sympathetic nerve fibres ___________the heart rate while parasympathetic nerve fibres _____________the heart rate.
Answer» ANSWER :INCREASE, DECREASE

Discussion

11404.	Question : The symmetry exhibited in cnidarians is…………… .
Answer» RADIAL BILATERAL PENTAMEROUS SPHERICAL SOLUTION :radial

Discussion

11405.	Question : Symbiotic nitrogen fixation is carried out in the nodules of leguminous plants by ……………………………….
Answer» SOLUTION :RHIZOBIUM

Discussion

11406.	Question : Symbionts having beneficial association of fungi and roots of higher plants.
Answer» SOLUTION :MYCORRHIZA

Discussion

11407.	Question : Swollen, broad leaf base is called as ……………………
Answer» phyllome PULVINUS stipule bract Solution :pulvinus

Discussion

11408.	Question : Sweat serves to eliminate mainly _______and _________.
Answer» ANSWER :SODIUM CHLORIDE WATER

Discussion

11409.	Question : Swathy comes to India form America through airafter a long journey,she suffers with jeting. Find out the reason
Answer» Solution :Jet LAG occurs when a person CROSSES multiple TIME ZONES. This disturbs the internal clock or circadian rhythms, which regulates sleep-wake CYCLE.

Discussion

11410.	Question : Sutures of the flat skull bones are ...... .joints.
Answer» SOLUTION : FIBROUS

Discussion

11411.	Question : Sustained involuntary contraction of smooth muscles is called
Answer» fatigue twitch tonus spasm ANSWER :D

Discussion

11412.	Question : Suspensor helps in the
Answer» formation of hypophysis cell which forms RADICLE and root cap PUSHING of embryo deep into the endosperm ABSORPTION of FOOD all of them Answer :D

Discussion

11413.	Question : Surface layers of mouth and skin are made up of
Answer» EPITHELIAL TISSUE MUSCULAR tissue stratified epithelial tissue CILIATED tissue Answer :C

Discussion

11414.	Question : Surface antigens of RBCs are called..........
Answer» SOLUTION :AGGLUTINOGENS

Discussion

11415.	Question : Suppose you have seen a poisonous snake nearby.Your heart beat and respiration rate will increase as the moment.Name the gland responsible for its secretion
Answer» SOLUTION :ADRENAL GLAND

Discussion

11416.	Question : Suppose you have seen a poisonous snake nearby.Your heart beat and respiration rate will increase as the moment.Name the hormone involved in this change
Answer» SOLUTION :ADRENALINE

Discussion

11417.	Question : Supra oesophagel ganglion of cockroach forms
Answer» principal motor CENTRE principal SENSORY centre both 1 & 2 none ANSWER :B

Discussion

11418.	Question : Suppose you accidentally find an old preserved permanent slide without a label. In your effort to identify it, you place the slide under microscope and observe the following features : (a) Unicellular (b) Well defined nucleus (c) Biflagellate - one flagellum lying longitudinally and the other transversely. What would you identify it as ? Can you name the kingdom it belongs to ?
Answer» SOLUTION :DINOFLAGELLATES are UNICELLULAR eukaryotes. Dinoflagellates belongs to KINGDOM PROTISTA.

Discussion

11419.	Question :Suppose there were plants that had a high concentration of chlorophyll b, but lacked chlorophyll a, would it carry out photosynthesis? Then why do plants have chlorophyll b and other accessory pigments?
Answer» Solution :If the plants LACK chlorophyll a, photosynthesis cannot be carried out. Chlorophyll a acts as a reaction centre. In PS I, a has ABSORPTION peak at 700 nm and in PS II at 680 nm. Chlorophyll b and other accessory pigments are able to absorb shorter wavelengths and then transfer their ENERGY to chlorophyll a for photophosphorylation. Such accessory pigments not only enable a WIDER range of wavelength of incoming light to be used for photosynthesis but also protect chlorophyll a from photooxidation.

Discussion

11420.	Question : Suppose there were plants that had a high concentration of Chlorophyll b but lacked chlorophyll a, would it carry out photosynthesis ? Then why do plants have chlorophyll b and other accessory pigments ?
Answer» Solution :No Other accessory PIGMENTS ABSORB energy and CONCENTRATES / FOCUSSES on chlorophyll - a. So it is NECESSARY.

Discussion

11421.	Question : SupposeEuphorbia andMazie are grown in the tropical area. (a) Which one of them do you think will be able to survive under such conditions ? (b)Which one of them is more efficient in terms of photosynthetic activity ? (c ) What difference do you think are there in their leaf anatomy ?
Answer» Solution :(a) Euphorbia is a CAM plant which does FIXATION of `CO_(2)` at night and uses during the day. This condition GIVES ADAPTABILITY of hot atmosphere. (b) Maize is a `C_(4)` Plant which is more EFFICIENT for photosynthesis which is more functional in lowerconcentration of `CO_(2)` and more `O_(2)` and at higher temperature.

Discussion

11422.	Question : Suppose Euphorbia and Maize are grown in the tropical area. (a) Which one of them do you think will be able to survive under such conditions? (b) Which one of them is more efficient in terms of photosynthetic activity? (c) What differences do you think are there in their leaf anatomy?
Answer» Solution :(a) Euporbia is a CAM plant. It FIXES `CO_(2)` during night and uses it in day time. It will be ableto survive in hot tropical climate. (B) Maize being a `C_(4)` plant is more efficient in terms of photosynthetic activity as it is able to use `CO_(2)` at lower level as well as high `O_(2)` and temperature. ( c) Maize PLANTS show kranz anatomy in their leaves. They have granal chloroplast in MESOPHYLL cells and agranal in bundle sheath cells Euphorbia does not have `C_(4)` cycle so kranz anatomy is not found in them.

Discussion

11423.	Question : Suppose a person wears convex galsses for proper vision. Where you think the image of the object is formed in his eyes when he is not using the glasses
Answer» On the BLIND spot On the YELLOW spot Behind the reatina In front of the retina SOLUTION :Since the use of a convex lenst decreases the local length of the eye-lens, therefore in this case, the IMAGE is formed behind retina when lens is not USED.

Discussion

11424.	Question : Supply the specific scientific terms for the following: stalked particles on the inner membrane of amitochondrion.
Answer» SOLUTION :`F_1` PARTICLES (OXYSOMES)

Discussion

11425.	Question : Supply the specific scientific terms for the following: extensive infoldings of the inner membrane ofmitochondria.
Answer» SOLUTION :CRISTAE

Discussion

11426.	Question : Supply the specific scientific terms for the following: cluster of ribosomes found in cytoplasm.
Answer» SOLUTION :Polyribosome

Discussion

11427.	Question : Sunken stomata are found in
Answer» LEAFLETS of CYCAS PINUS needles Nerium LEAVES All of these Answer :D

Discussion

11428.	Question : Sunken stomata are usually found in
Answer» Phanerogams `C_(3)` Plants CAM plants Insectivorous plants Solution :Sunken STOMATA are USUALLY FOUND in CAM plants.

Discussion

11429.	Question : Sunflower is not a flower. Explain.
Answer» Solution :Sunflower is not a flower but type of an inflorescence in which receptacle is flat. It possesses many sessile and small flower buds. The smallest bud is in the centre and the oldest is located TOWARDS periphery. The group of flower bud is surrounded by a bract and it is called involucre. Two types of flower buds are seen in sunflower : (i) RAY Florets : It is arranged on the edge of receptacle that possesses special yellow colour and band like petals. These flower buds are arranged in FEMALE sessile and ALWAYS Zygomorphic , one or more whorls. (ii) Disc florets : They are located in centre, BISEXUAL and actinomorphic.

Discussion

11430.	Question : Sunken stomata is seen in. . . . .
Answer» CYCAS Nerium Both (a) and (B) NONE ANSWER :A::B::C::D

Discussion

11431.	Question : Sunflower is a heterogamous type of capitulum.
Answer» SOLUTION :It BEARS DISC FLORETS and RAY florets

Discussion

11432.	Question : Synapsis occur's between
Answer» MRNA and ribosomes spindle fibres and centromere two HOMOLOGOUS chromosome a male and a FEMALE gemeter Answer :C

Discussion

11433.	Question : Sunhemp is obtainedfrom …………….
Answer» CROTOLARIA JUNCEA Corchorus capsularis LINUM ustitaissimum CANNABIS sativa ANSWER :A

Discussion

11434.	Question : Sulphur shower is caused by :
Answer» Release of POLLENS from PINUS MALE cones in conifer forest Acid rains Sulphur deposition None of the above Answer :A

Discussion

11435.	Question : Sulphur is not a constitunet of
Answer» Cysteine METHIONINE Ferredoxin PYRIDOXINE Answer :C

Discussion

11436.	Question : Sulcus is
Answer» Feeding apparatus of ciliates Longitudinal GROOVE of dinoflagellates TRANSVERSE groove of dinoflagellates Tentacle of NOCTILUCA Answer :B

Discussion

11437.	Question : Suggest why arteries close to the heart have more elastic fibres in their walls than arteries further away from the heart?
Answer» Solution :1. Elastic FIBRES allow the artery to stretch and RECOIL as blood PASSES through it. 2. Arteries closer to the heart experience more PRESSURE than arteries further away from the heart. 3. Therefore arteries CLOSE to the heart have more elastic fibres in their walls to cope with high pressure of blood coming from the heart.

Discussion

11438.	Question :Suggest two methods to increase the life of cut plants in a vase.
Answer» SOLUTION :(a) By ADDING cytokinin into water of the VASE.(b)PREVENTING entry of air in the cut plants by immediately immersing thecut end in water.

Discussion

11439.	Question : Sugars and amino acids are carried into the cell by thesodium-potassium pump by means of :
Answer» FACILITATED TRANSPORT active transport simple diffusion endocytosis SOLUTION :facilitated transport

Discussion

11440.	Question : Sugarcane stores carbohydrate as sugar in
Answer» leaf root stem fruits ANSWER :C

Discussion

11441.	Question : Sugar crystals do not dissolve easily in ice cold water. Explain.
Answer» Solution :(PURE) water has enormous free energy at normal temperature which is called water potential. When water temperature DECREASES, free energy also decreases, so sugar PARTICLES do not dissolve EASILY in cold water.

Discussion

11442.	Question : Suflower is not a flower. Justify the statement.
Answer» Solution :1. Sunflower is an inflorescence called CAPITULUM or racemose head. 2. It has a flat disc-shaped peduncle called receptacle. 3. It bears an involucre of bracts on the periphery and two types of small sessile FLOWERS called florets. 4. The florets are arranged centripetally with youngest towards the periphery. 5. There are RAY florets which are sterile female flowers of ligulate type on the outside. 6. The rest of the flower structure contains disc florets which are fertile bisexual flowers of tubular type.

Discussion

11443.	Question : Sudden and abnormal mitosis in an organ will frequenily lead to
Answer» ZYGOTE CANCER NEW ORGAN Gastrula ANSWER :B

Discussion

11444.	Question : Sucrose is a combination of ____and fructose.
Answer» `ALPHA`-GLUCOSE `BETA`-glucose Ketoses Maltose Solution :`alpha`-glucose

Discussion

11445.	Question : Suckers are found in
Answer» NERIUM and JASMINE BANANA and PINEAPPLE Pistia and Nerium Jasmine and Musa Answer :B

Discussion

11446.	Question : Succus entericus is the name given to which part or juice?
Answer» SOLUTION :INTESTINAL JUICE

Discussion

11447.	Question : Sucession starts on the large and bare rock is called
Answer» SECONDARY SUCCESSION Primary succession CLIMAX community Ecological pyramid Answer :B

Discussion

11448.	Question : Succus entericus is the name given to………
Answer» A JUNCTION between ilemum and LARGE intestine Swelling in the gut Appendix Intestinal juice Answer :D

Discussion

11449.	Question : Succus entericus is the name given to (A) a junction between ileum and large intestine (B) intestinal juice (C) swelling in the gut (D) appendix
Answer» a JUNCTION between ILEUM and LARGE intestine intestinal juice swelling in the gut appendix

Discussion

11450.	Question : Succus entericus is secreted by
Answer» CRYPTS of LIEBERKUHN Brunner's glands both of these none of these SOLUTION :both of these

Discussion

Explore topic-wise InterviewSolutions in .

Question : Sympathetic nervous system induces

Question : Sympathetic nerves________the pupil while parasympathetic nerves _______it.

Question : Sympathetic nerve fibres ___________the heart rate while parasympathetic nerve fibres _____________the heart rate.

Question : The symmetry exhibited in cnidarians is…………… .

Question : Symbiotic nitrogen fixation is carried out in the nodules of leguminous plants by ……………………………….

Question : Symbionts having beneficial association of fungi and roots of higher plants.

Question : Swollen, broad leaf base is called as ……………………

Question : Sweat serves to eliminate mainly _______and _________.

Question : Swathy comes to India form America through airafter a long journey,she suffers with jeting. Find out the reason

Question : Sutures of the flat skull bones are ...... .joints.

Question : Sustained involuntary contraction of smooth muscles is called

Question : Suspensor helps in the

Question : Surface layers of mouth and skin are made up of

Question : Surface antigens of RBCs are called..........

Question : Suppose you have seen a poisonous snake nearby.Your heart beat and respiration rate will increase as the moment.Name the gland responsible for its secretion

Question : Suppose you have seen a poisonous snake nearby.Your heart beat and respiration rate will increase as the moment.Name the hormone involved in this change

Question : Supra oesophagel ganglion of cockroach forms

Question :Suppose there were plants that had a high concentration of chlorophyll b, but lacked chlorophyll a, would it carry out photosynthesis? Then why do plants have chlorophyll b and other accessory pigments?

Question : Suppose there were plants that had a high concentration of Chlorophyll b but lacked chlorophyll a, would it carry out photosynthesis ? Then why do plants have chlorophyll b and other accessory pigments ?

Question : SupposeEuphorbia andMazie are grown in the tropical area. (a) Which one of them do you think will be able to survive under such conditions ? (b)Which one of them is more efficient in terms of photosynthetic activity ? (c ) What difference do you think are there in their leaf anatomy ?

Question : Suppose Euphorbia and Maize are grown in the tropical area. (a) Which one of them do you think will be able to survive under such conditions? (b) Which one of them is more efficient in terms of photosynthetic activity? (c) What differences do you think are there in their leaf anatomy?

Question : Suppose a person wears convex galsses for proper vision. Where you think the image of the object is formed in his eyes when he is not using the glasses

Question : Supply the specific scientific terms for the following: stalked particles on the inner membrane of amitochondrion.

Question : Supply the specific scientific terms for the following: extensive infoldings of the inner membrane ofmitochondria.

Question : Supply the specific scientific terms for the following: cluster of ribosomes found in cytoplasm.

Question : Sunken stomata are found in

Question : Sunken stomata are usually found in

Question : Sunflower is not a flower. Explain.

Question : Sunken stomata is seen in. . . . .

Question : Sunflower is a heterogamous type of capitulum.

Question : Synapsis occur's between

Question : Sunhemp is obtainedfrom …………….

Question : Sulphur shower is caused by :

Question : Sulphur is not a constitunet of

Question : Sulcus is

Question : Suggest why arteries close to the heart have more elastic fibres in their walls than arteries further away from the heart?

Question :Suggest two methods to increase the life of cut plants in a vase.

Question : Sugars and amino acids are carried into the cell by thesodium-potassium pump by means of :

Question : Sugarcane stores carbohydrate as sugar in

Question : Sugar crystals do not dissolve easily in ice cold water. Explain.

Question : Suflower is not a flower. Justify the statement.

Question : Sudden and abnormal mitosis in an organ will frequenily lead to

Question : Sucrose is a combination of ____and fructose.

Question : Suckers are found in

Question : Succus entericus is the name given to which part or juice?

Question : Sucession starts on the large and bare rock is called

Question : Succus entericus is the name given to………

Question : Succus entericus is the name given to (A) a junction between ileum and large intestine (B) intestinal juice (C) swelling in the gut (D) appendix

Question : Succus entericus is secreted by

Question : Sympathetic nerves__the pupil while parasympathetic nerves _it.

Question : Sympathetic nerve fibres _the heart rate while parasympathetic nerve fibres ___the heart rate.

Question : Sweat serves to eliminate mainly _and ___.