22339 + Interview Questions in Biology in Class 11 Page 148 InterviewSolution

7351.	Question : What makes the plant cell more rigid than animal cells?
Answer» Solution :Plants cells POSSES CELL WALL which PROVIDES sufficient rigidity and proper shape to them WHEREAS in case of animal cells, cell wall is totally absent.

Discussion

7352.	Question :What makes the raisins to swell up when kept in water ?
Answer» SOLUTION : ENDOSMOSIS.

Discussion

7353.	Question : What lubricate the freely movable joints at the shouler?
Answer» ANSWER :LACTIC ACID

Discussion

7354.	Question :Opening and closing of stomata is due to
Answer» Solution :Turgidity of GUARD CELLS as the tough INNERWALLS become convex, OPENING the stoma.

Discussion

7355.	Question : What ls the use of perspiration and panting to mammals ?
Answer» SOLUTION :Perspiration and panting cool the BODY when OVERHEATED.

Discussion

7356.	Question : What kind of valves are present in the lymph?
Answer» SOLUTION :SEMILUNAR VALVES.

Discussion

7357.	Question : What kind of proteins are actin and myosin?
Answer» SOLUTION :CONTRACTILE PROTEINS.

Discussion

7358.	Question : What kind of subunits does a Eucaryotic ribosome have?
Answer» SOLUTION :60 S and 40 S.

Discussion

7359.	Question : What kind of proteins do micro filaments and microtubule have?
Answer» SOLUTION :Microfilaments have PROTEIN actin and MICROTUBULE the GLOBULAR protein, tubulin.

Discussion

7360.	Question : What kind of skin do cyclostomates have?
Answer» SOLUTION :SKIN is SOFT and slimy WITHOUT scales.

Discussion

7361.	Question : What kind of Photophosphorylation takes place in P_(680)(PS II)?
Answer» SOLUTION :Non-cyclic PHOTOPHOSPHORYLATION.

Discussion

7362.	Question : What kind of organisms are included in Kingdom Fungi?
Answer» SOLUTION :UNICELLULAR or multicellular EUKARYOTIC without chlorophyll, MAINLY saprophytic nutrition.

Discussion

7363.	Question : What kind of muscles are capable of fast contraction with short intervals?
Answer» SOLUTION :WHITE MUSCLE FIBRES.

Discussion

7364.	Question : What kind of lining does trachea have ? Does it have any significance?
Answer» Solution :TRACHEA is lined with ciliated, pseudostratified COLUMNAR epithelium. This keeps the unwanted particles away from LUNGS by beating of cilia towards the BUCCAL cavity and mucus CELLS of epithelium keep the trachea lubricated.

Discussion

7365.	Question : What type of lining is present in trachea ?
Answer» Solution :ALVEOLI have THIN, simple SQUAMOUS, nonciliated EPITHELIUM.

Discussion

7366.	Question : What kind of main excretory product do humann beings, discharge and where is it formed in the body?
Answer» SOLUTION :Urea. It is formed in the liver by combining `CO_(2)` with AMMONIA.

Discussion

7367.	Question : What kind of heart do fishes have?
Answer» Solution :Two CHAMBERED heart with one AURICLE and one VENTRICLE.

Discussion

7368.	Question : What kind of Henle's loop do cortical nephrons have?
Answer» SOLUTION :CORTICAL NEPHRONS.

Discussion

7369.	Question : What kind of heart and bones.do birds have?
Answer» SOLUTION :Birds-have 4-chambered HEART and light,POROUS BONES with aircavities CALLED pneumatic bones.

Discussion

7370.	Question : What kind of genetic material do procaryotic cells have?
Answer» SOLUTION :A SINGLE CIRCULAR DNA.

Discussion

7371.	Question : What kind of epethelium is present in lining of trachea and nasal epethelium ?
Answer» SOLUTION :Pscudostrafied EPITHELIUM.

Discussion

7372.	Question : What kind of coelom is found in Aschelminthes?
Answer» SOLUTION :PSEUDOCOELOM.

Discussion

7373.	Question : What kind of enzymes are present in lysosomes?
Answer» SOLUTION :ACID HYDROLASES.

Discussion

7374.	Question : What kind of cells is hypodermis made up of?
Answer» SOLUTION :Collenchymatons CELLS.

Discussion

7375.	Question : What kind of cells do fungi have?
Answer» SOLUTION :EUKARYOTIC CELLS.

Discussion

7376.	Question : What kind of arrangement of vascular bundles is found in monocot and dicot roots?
Answer» SOLUTION :Radial vascular bundles. Xylem and PHLOEM are PRESENT on DIFFERENT radiis.

Discussion

7377.	Question : What kind of blood is present in right atrium (auricle)?
Answer» SOLUTION :DEOXYGENATED BLOOD.

Discussion

7378.	Question : What is soredium?
Answer» Solution :SOREDIUM is a PROPAGULE in lichens in which few algal CELLS are held together by a WEFT of fungal cells.

Discussion

7379.	Question : What is 'Wobbling' in tRNA?
Answer» SOLUTION :(i) The third base of the codon is called wobble base and this PORTION is called wobble position. The actual base pairing between codon of mRNA and anticodon of tRNA occurs at first two positions only. The pairing at the third base need not be complementary. This is called Wobbling. (ii) It ALLOWS more than one tRNA to code for an amino ACID.

Discussion

7380.	Question : What is water vascular system?
Answer» SOLUTION :The system which helps in nutrition and respiration in ECHINODERMS is called water vascular system. Water ENTERS into the body through SPECIAL organs.

Discussion

7381.	Question : What is wildlife symbol of WWF?
Answer» SOLUTION :RED PANDA.

Discussion

7382.	Question : What is water potential of pure water at atmospheric pressure? What happens to it when solutes are added toit?
Answer» SOLUTION :Water POTENTIAL of pure water at ATMOSPHERIC pressure is ZERO. Addition of solutes lowers the water potential of pure water and it becomes NEGATIVE.

Discussion

7383.	Question : What is water potential ?
Answer» Solution :1. The concept of water potential was introduced in 1960 by Slatyer and TAYLOR. 2. Water potential is potential energy of water in a system COMPARED to pure water when both temperature and pressure are kept the same. 3. It is also a measure of how freely water molecules can move in a particular ENVIRONMENT or system. 4. Water potential is denoted by the Greek symbol `psi` (psi) and measured in Pascal (Pa). At standard temperature the water potential of pure water is zero .

Discussion

7384.	Question : What is water bloom ?
Answer» SOLUTION :Change in COLOUR of water body DUE to EXCESS growth of planktonic algae is called water bloom .

Discussion

7385.	Question : What is vomiting?
Answer» Solution :It is reverse PERISTALSIS. HARMFUL substances and CONTAMINATED food from stomach are ejected through the mouth. This action is controlled by the VOMIT centre located in the medulla obligata. A FEELING of nausea precedes vomiting.

Discussion

7386.	Question : Whatis vital capacityin regard to breathing ?
Answer» Solution :VITAL capcityis AMOUNTOF airexhaled with force after forced inhalation . In a NORMAL adult PEROSN, it isabout3.5-3.4. liters,

Discussion

7387.	Question : What is very common among middle aged and elderly women and man?
Answer» CAD Angina Cardiac ARREST All of these ANSWER :B

Discussion

7388.	Question : What is Vermiwash?
Answer» SOLUTION :1. VERMIWASH is a LIQUID collected after passage of WATER through a column of vermibed. 2. It is used as a foliar spray to enhance plant GROWTH and yield.

Discussion

7389.	Question : What is Vermitech?
Answer» Solution :APPLICATIONS of earthworm in technology of composting and BIOREMEDIATION of SOILS and other activities is called VERMITECH.

Discussion

7390.	Question : Define Vermiculture.
Answer» Solution :Vermiculture is the process of USING EARTHWORMS to decompose organic food WASTE, into a nutrient-rich material capable of supplying necessary NUTRIENTS which helps to SUSTAIN plant growth.

Discussion

7391.	Question : What is vermicompost?
Answer» Solution :VERMICOMPOST is the COMPOST PRODUCED by the action of EARTHWORMS in association with all other organisms in the compost UNIT.

Discussion

7392.	Question : What is Vermicast?
Answer» SOLUTION :he BREAKDOWN of organic matter by the activity of the earthworms and its ELIMINATION from its body is CALLED vermicast.

Discussion

7393.	Question : What is uremia?
Answer» SOLUTION :Rise of blood urea level which happens during renal FAILURE.

Discussion

7394.	Question : What is Umbellule? Give an example.
Answer» SOLUTION :UMBELLULE : Each smaller UNIT is called an umbellule. EG: Daucas CAROTA (carrot).

Discussion

7395.	Question : What is unique about the endosperm of Gymnosperms ?
Answer» SOLUTION :1. It is haploid and develops before fertilization. 2.It ANGIOSPERMS it is TRIPLOID and develops after fertilization.

Discussion

7396.	Question : What is typhlosole? Mention its function.
Answer» Solution :The dorsal wall of the intestine of earthworm is folded into the cavity as the typhlosole. This FOLD contains BLOOD vessels and INCREASES the ABSORPTIVE area of the intestine

Discussion

7397.	Question : What is umbel and umbellule?
Answer» Solution :Umbel: An INFLORESCENCE with indeterminate central AXIS and PEDICELLATE flowers arise from common point of peduncle at the apex. COMPOUND umbel inflorescence is a branched umbel. Umbellule: Each smaller unit is CALLED an umbellule. Eg: Daucas carota (carrot).

Discussion

7398.	Question : What is tubular secretion? Name the substances secreted through the renal tubules.
Answer» Solution :1. Tubular secretion is the passage of waste material from the blood to the filtrate in the Nephron. It is the last stage of Excretory process TAKING place in the Nephron. 2. Substances such as H+, K+, NH +, creatinine and organic acids move into the filtrate from the peritubular capillaries into the tubular fluid. 3. Most of the water is ABSORBED in the proximal convoluted tubule and Na+ is exchanged for water in the loop of Henle. Hypotonic fluid enters the distal convoluted tubule and substances such as urea and salts PASS from peritubular blood into the cells of DCT. 4. The URINE excreted contains both filtered and secreted substances. Once it enters the collecting duct, water is absorbed and concentrated hypertonic urine is formed. 5. For every H+ secreted into the tubular filtrate, a Nat is absorbed by the tubular cell. The H+ secreted combines with HCO,, HPO, and NH, and gets fixed as H,CO, H,PO, and NH, respectively. Since it gets fixed in the fluid, reabsorption of H+ is prevented.

Discussion

7399.	Question : What is true for vernalisation?
Answer» INDUCES flowering perceived by leaves exposure to HIGH temperature response to LIGHT

Discussion

7400.	Question : What is true of resting potential ?
Answer» MEMBRANE is depolarised INSIDE is `+ve` and OUTSIDE is `-ve` more PERMEABLE to `NA^(+)` inside is `-ve` and outside is `+ve`

Discussion

Explore topic-wise InterviewSolutions in .

Question : What makes the plant cell more rigid than animal cells?

Question :What makes the raisins to swell up when kept in water ?

Question : What lubricate the freely movable joints at the shouler?

Question :Opening and closing of stomata is due to

Question : What ls the use of perspiration and panting to mammals ?

Question : What kind of valves are present in the lymph?

Question : What kind of proteins are actin and myosin?

Question : What kind of subunits does a Eucaryotic ribosome have?

Question : What kind of proteins do micro filaments and microtubule have?

Question : What kind of skin do cyclostomates have?

Question : What kind of Photophosphorylation takes place in P_(680)(PS II)?

Question : What kind of organisms are included in Kingdom Fungi?

Question : What kind of muscles are capable of fast contraction with short intervals?

Question : What kind of lining does trachea have ? Does it have any significance?

Question : What type of lining is present in trachea ?

Question : What kind of main excretory product do humann beings, discharge and where is it formed in the body?

Question : What kind of heart do fishes have?

Question : What kind of Henle's loop do cortical nephrons have?

Question : What kind of heart and bones.do birds have?

Question : What kind of genetic material do procaryotic cells have?

Question : What kind of epethelium is present in lining of trachea and nasal epethelium ?

Question : What kind of coelom is found in Aschelminthes?

Question : What kind of enzymes are present in lysosomes?

Question : What kind of cells is hypodermis made up of?

Question : What kind of cells do fungi have?

Question : What kind of arrangement of vascular bundles is found in monocot and dicot roots?

Question : What kind of blood is present in right atrium (auricle)?

Question : What is soredium?

Question : What is 'Wobbling' in tRNA?

Question : What is water vascular system?

Question : What is wildlife symbol of WWF?

Question : What is water potential of pure water at atmospheric pressure? What happens to it when solutes are added toit?

Question : What is water potential ?

Question : What is water bloom ?

Question : What is vomiting?

Question : Whatis vital capacityin regard to breathing ?

Question : What is very common among middle aged and elderly women and man?

Question : What is Vermiwash?

Question : What is Vermitech?

Question : Define Vermiculture.

Question : What is vermicompost?

Question : What is Vermicast?

Question : What is uremia?

Question : What is Umbellule? Give an example.

Question : What is unique about the endosperm of Gymnosperms ?

Question : What is typhlosole? Mention its function.

Question : What is umbel and umbellule?

Question : What is tubular secretion? Name the substances secreted through the renal tubules.

Question : What is true for vernalisation?

Question : What is true of resting potential ?